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Engineer's DNS Intelligence Report

usa.gov
15 Feb 2026, 00:08 UTC · 22.3s ·v26.14.23 · SHA-3-512: c45e✱✱✱✱ Verify
Recon ModeRecon Mode Snapshot Re-analyze New Domain
Footprint
DNS Security & Trust Posture
Risk Level: Low Risk
4 protocols configured, 5 not configured Why we go beyond letter grades
Email Spoofing
Protected
Brand Impersonation
Not Setup
DNS Tampering
Protected
Certificate Control
Open
Monitoring
DKIM signing inferred from provider — could not directly verify selector
Configured
SPF, DMARC (reject), DKIM (inferred via Amazon SES), DNSSEC
Not Configured
MTA-STS, TLS-RPT, BIMI, DANE, CAA
Priority Actions 4 total Achievable posture: Secure
Low Add BIMI Record

Your domain has DMARC reject — you qualify for BIMI, which displays your brand logo in receiving email clients that support it (Gmail, Apple Mail, Yahoo).

BIMI displays your verified brand logo next to your emails in supporting mail clients.
FieldValue
TypeTXT
Hostdefault._bimi.usa.gov (BIMI default record)
Valuev=BIMI1; l=https://usa.gov/brand/logo.svg
Low Add CAA Records

CAA records specify which Certificate Authorities may issue certificates for your domain, reducing the risk of unauthorized certificate issuance.

CAA constrains which CAs can issue certificates for this domain.
FieldValue
TypeCAA
Hostusa.gov (root of domain — adjust CA to match your provider)
Value0 issue "letsencrypt.org"
Low Add TLS-RPT Reporting

TLS-RPT (TLS Reporting) sends you reports about TLS connection failures when other servers try to deliver mail to your domain.

TLS-RPT sends you reports about TLS connection failures to your mail servers.
FieldValue
TypeTXT
Host_smtp._tls.usa.gov (SMTP TLS reporting record)
Valuev=TLSRPTv1; rua=mailto:tls-reports@usa.gov
Low Deploy MTA-STS

MTA-STS enforces TLS encryption for inbound mail delivery, preventing downgrade attacks on your mail transport.

MTA-STS tells sending servers to require TLS when delivering mail to your domain.
FieldValue
TypeTXT
Host_mta-sts.usa.gov (MTA-STS policy record)
Valuev=STSv1; id=usa.gov
Registrar (RDAP) OBSERVED LIVE
get.gov (Registrant: REDACTED FOR PRIVACY)
Where domain was purchased
Email Service Provider
Unknown
Strongly Protected
Web Hosting
Unknown
Where website is hosted
DNS Hosting
Unknown
Where DNS records are edited
Email Security Methodology Can this domain be impersonated by email? No SPF and DMARC reject policy enforced

SPF Record RFC 7208 §4 Verified

Does this domain declare who may send email on its behalf? Yes
Success ~all 2/10 lookups

SPF valid with industry-standard soft fail (~all), 2/10 lookups

v=spf1 include:amazonses.com include:532040.spf10.hubspotemail.net ~all
RFC 7208 Conformant — This SPF record conforms to the syntax and semantics defined in RFC 7208 §4.
RFC Failure Mode: Unlike DMARC (where unknown tags are silently ignored per RFC 7489 §6.3), SPF with unrecognized mechanisms produces a PermError per RFC 7208 §4.6 — the record fails loudly rather than silently.
Related CVEs: CVE-2024-7208 (multi-tenant domain spoofing), CVE-2024-7209 (shared SPF exploitation), CVE-2023-51764 (SMTP smuggling bypasses SPF)
~all is the industry standard. Google, Apple, and most providers default to soft fail. CISA (BOD 18-01) and RFC 7489 confirm that DMARC policy — not SPF alone — is the primary enforcement control. Using ~all allows DKIM to be evaluated before a DMARC decision is made. This domain uses ~all + DMARC reject: the strongest compatible security stance, aligned with CISA and RFC guidance.

DMARC Policy RFC 7489 §6.3 Verified

Are spoofed emails rejected or quarantined? Yes — reject policy
Success p=reject

DMARC policy reject (100%) - excellent protection

v=DMARC1; p=reject; pct=100; fo=1; ri=86400; rua=mailto:dmarcreports@gsa.gov,mailto:reports@dmarc.cyber.dhs.gov; ruf=mailto:dmarcfailures@gsa.gov
Alignment: SPF relaxed DKIM relaxed
No np= tag (DMARCbis) — non-existent subdomains inherit p= policy but adding np=reject provides explicit protection against subdomain spoofing
Forensic reports (ruf) configured - many providers ignore these
RFC 7489 Conformant — DMARC record conforms to RFC 7489 §6.3 with full enforcement.
DMARCbis (Pending): draft-ietf-dmarc-dmarcbis will elevate DMARC to Standards Track, obsolete RFC 7489, replace pct= with t= (testing flag), add np= (non-existent subdomain policy), and mandate DNS tree walk for policy discovery instead of the Public Suffix List.
Related CVEs: CVE-2024-49040 (Exchange sender spoofing), CVE-2024-7208 (multi-tenant DMARC bypass)

DKIM Records RFC 6376 §3.6 Verified

Are outbound emails cryptographically signed? Provider-managed
Provider Verified

DKIM not discoverable via common selectors (large providers use rotating selectors)

Amazon SES detected as primary mail platform — DKIM signing is managed by the provider. The primary provider may use custom selectors not discoverable through standard checks.
Know your DKIM selector? Re-scan with a custom selector to verify.
RFC 6376 (Provider-Managed) — DKIM signing managed by the detected mail provider per RFC 6376.
Known Vulnerabilities: DKIM l= tag body length vulnerability (attacker appends unsigned content to signed mail), weak key exploitation (keys below 1024-bit are cryptographically breakable per RFC 6376 §3.3.3), DKIM replay attacks (re-sending legitimately signed messages at scale)

MTA-STS RFC 8461 §3 Verified

Can attackers downgrade SMTP to intercept mail? Not prevented
Warning

No MTA-STS record found

MTA-STS policy enforcement is evaluated in Mail Transport Security below.

TLS-RPT RFC 8460 §3 Verified

Will failures in TLS delivery be reported? No reporting
Warning

No TLS-RPT record found

DMARC External Reporting Authorization RFC 7489 §7.1

Are external report receivers authorized? Yes — all authorized
Success

All 2 external reporting domains properly authorized

External Domain Authorization Auth Record
gsa.gov Authorized v=DMARC1
dmarc.cyber.dhs.gov Authorized v=DMARC1

DANE / TLSA Verified Recon Methodology Can mail servers establish identity without a public CA? No
RFC 7672 §3 RFC 6698 §2 Not Configured

No MX records available — DANE check skipped

DANE (RFC 7672) binds TLS certificates to DNSSEC-signed DNS records, protecting email transport against man-in-the-middle attacks and rogue CAs. It is the primary transport security standard — MTA-STS (RFC 8461) was created as the alternative for domains that cannot deploy DNSSEC. Over 1 million domains use DANE globally, including Microsoft Exchange Online, Proton Mail, and Fastmail. Best practice: deploy both for defense in depth.

Email Transport Security

Two mechanisms protect email in transit. DANE is the primary standard; MTA-STS is the alternative for domains that cannot deploy DNSSEC:

  • DNSSEC + DANE (RFC 7672) — Cryptographic chain of trust from DNS root to mail server certificate. Eliminates reliance on certificate authorities. No trust-on-first-use weakness. Requires DNSSEC.
  • MTA-STS (RFC 8461) — HTTPS-based policy requiring TLS for mail delivery. Works without DNSSEC but relies on CA trust and is vulnerable on first use (§10). Created for domains where “deploying DNSSEC is undesirable or impractical” (§2).
This domain has neither DANE nor MTA-STS. Mail transport relies on opportunistic TLS without policy enforcement, leaving it vulnerable to downgrade attacks. Deploy DANE (RFC 7672) with DNSSEC for the strongest protection, or MTA-STS (RFC 8461) if DNSSEC is not feasible.

Industry trend: Microsoft Exchange Online enforces inbound DANE with DNSSEC (GA October 2024), and providers like Proton Mail and Fastmail also support DANE. Google Workspace does not support DANE and relies on MTA-STS. Both mechanisms coexist because DANE is backward-compatible — senders skip the check if the domain isn't DNSSEC-signed (RFC 7672 §1.3).


Brand Security Can this brand be convincingly faked? No

BIMI BIMI Spec Verified Warning

Is the brand identity verified and displayed in inboxes? No

No BIMI record found

CAA RFC 8659 §4 Verified Warning

Does this domain restrict who can issue TLS certificates? No

No CAA records found - any CA can issue certificates

Vulnerability Disclosure Policy (security.txt) Is there a verified way to report security issues? No RFC 9116

No security.txt found

A security.txt file at /.well-known/security.txt provides security researchers with a standardized way to report vulnerabilities. See securitytxt.org for a generator.

AI Surface Scanner Beta Is this domain discoverable by AI — and protected from abuse? No

No AI governance measures detected

llms.txt llmstxt.org
Is this domain publishing AI-readable brand context? No
No llms.txt found
No llms-full.txt found
AI Crawler Governance (robots.txt) RFC 9309 IETF Draft
Are AI crawlers explicitly allowed or blocked? Not blocked
No AI crawler blocking observed — no blocking directives found in robots.txt
Content-Usage Directive IETF Draft
Does the site express AI content-usage preferences? Not Configured
No Content-Usage directive detected. The IETF AI Preferences working group is developing a Content-Usage: directive for robots.txt that lets site owners declare whether their content may be used for AI training and inference. This is an active draft, not yet a ratified standard.
Example: Add Content-Usage: ai=no to robots.txt to deny AI training, or Content-Usage: ai=allow to explicitly permit it. Without this directive, AI crawler behavior depends on individual crawler policies and User-agent rules.
AI Recommendation Poisoning
Is this site trying to manipulate AI recommendations? No
No AI recommendation poisoning indicators found
Hidden Prompt Artifacts
Is hidden prompt-injection text present in the source? No
No hidden prompt-like artifacts detected
Evidence Log (1 item)
TypeDetailSeverityConfidence
robots_txt_no_ai_blocks robots.txt found but no AI-specific blocking directives low Observed
Mail Transport Security Beta Is mail transport encrypted and verified? Not Enforced

No MX records found

Infrastructure Intelligence Who hosts this domain and what services power it? Direct

ASN / Network Success

Resolved 1 unique ASN(s) across 2 IP address(es)

ASNNameCountry
AS14618 US
IPv4 Mappings:
23.22.13.113AS14618 (23.22.0.0/15)
IPv6 Mappings:
2600:1f18:f88:4313:6df7:f986:f915:78d6AS14618 (2600:1f18::/35)

Edge / CDN Success

Domain appears to use direct origin hosting

SaaS TXT Footprint Success

No SaaS verification records detected

Detects SaaS services that leave DNS TXT verification records (e.g., domain ownership proofs). Does not detect all SaaS platforms — only those indicated by DNS.


Domain Security Methodology Can DNS responses be tampered with in transit? No

DNSSEC RFC 4033 §2 Verified Signed RSA/SHA-256

DNSSEC fully configured and validated — AD (Authenticated Data) flag set by resolver 8.8.8.8 confirming cryptographic chain of trust from root to zone (RFC 4035 §3.2.3)

Chain of trust: Root → TLD → Domain. DNS responses are authenticated and tamper-proof.
AD Flag: Validated - Resolver (8.8.8.8) confirmed cryptographic signatures
DS Record (at registrar):
62996 8 2 9F496F09690F4923E2B4D9336A3A0886CAC24DAEB44153E13F50543B9BA77977
445 8 2 5517C2B10E0CE87584293327971302E9781169313111D9D6C9C4064AEB4865BA
4292 8 2 9C1D52E67A297D47056BE8647CEC0DEDDAF6757817AEC22A4A26D4FB9300AB53

NS Delegation Verified

5 nameserver(s) configured

Nameservers: dns.gsa.gov dns2.gsa.gov dns3.gsa.gov dns4.gsa.gov dns5.gsa.gov
Multi-Resolver Verification Recon: Consensus reached - 4 resolvers (Cloudflare, Google, Quad9, OpenDNS, DNS4EU) agree on DNS records
Traffic & Routing Where does this domain's traffic actually terminate?

AIPv4 Address

23.22.13.113
Where the domain points for web traffic

AAAAIPv6 Address

2600:1f18:f88:4313:6df7:f986:f915:78d6
IPv6 ready

MXMail Servers

No MX records
Domain cannot receive email

SRVServices

No SRV records
No service-specific routing configured
Web: Reachable (1 IPv4, 1 IPv6) Mail: Not configured Services: None
Subdomain Discovery RFC 6962 Recon LIVE What subdomains and infrastructure are exposed in certificate logs? 156 subdomains discovered
How did we find these?
Certificate Transparency Logs Unavailable The results below are from DNS probing only and may be significantly incomplete. CT logs typically reveal hundreds or thousands of additional subdomains via certificate issuance history (RFC 6962).
1555 certificates analyzed 1 current 155 expired 1 CNAME Source: Certificate Transparency + DNS Intelligence
Subdomains discovered via CT logs (RFC 6962), DNS probing of common service names, and CNAME chain traversal.
Wildcard certificate detected: *.usa.gov Expired 0 cert
No explicit SANs found on wildcard certificates. Subdomains covered by this wildcard won't appear individually in CT logs (RFC 6962).
DNS probing and CNAME chain traversal were used to discover additional subdomains below.
Subdomain Source Status Provider / CNAME Certificates First Seen Issuer(s)
1.usa.gov CT Log Current 1.usa.gov.external-domains-production.cloud.gov. 42 2020-08-29T20:31:06 Let's Encrypt
52weeks4women.sites.usa.gov CT Log Expired 13 2018-04-23T00:00:00 DigiCert Inc
admin-survey.usa.gov CT Log Expired 49 2017-03-01T00:00:00 GeoTrust Inc., "GeoTrust, COMODO CA Limited
advocacysba.sites.usa.gov CT Log Expired 59 2018-05-29T00:00:00 DigiCert Inc
alpha.my.usa.gov CT Log Expired 1 2015-12-17T00:00:00 COMODO CA Limited
analytics.usa.gov CT Log Current analytics.usa.gov.external-domains-production.cloud.gov. 39 2020-08-05T10:31:08 Let's Encrypt, COMODO CA Limited
answers.usa.gov CT Log Current answers.usa.gov.external-domains-production.cloud.gov. 145 2020-09-15T17:52:33 Let's Encrypt
api-business.usa.gov CT Log Expired 1 2017-10-20T19:12:28 Let's Encrypt
api.usa.gov CT Log Current api-usa-gov.domains.api.data.gov. 101 2020-08-09T06:33:00 Let's Encrypt, GeoTrust Inc., "GeoTrust
apps.usa.gov CT Log Current apps.usa.gov.external-domains-production.cloud.gov. 175 2020-09-15T17:52:33 Let's Encrypt, GeoTrust Inc.
armyengineerhistory.sites.usa.gov CT Log Expired 13 2018-04-23T00:00:00 DigiCert Inc
asis.demo1.search.usa.gov CT Log Expired 1 2016-12-28T23:10:00 Let's Encrypt
asis.search.usa.gov CT Log Expired 42 2020-07-28T15:25:12 Let's Encrypt
atlfeb.sites.usa.gov CT Log Expired 15 2018-04-19T00:00:00 DigiCert Inc
aws.search.usa.gov CT Log Expired 18 2016-11-11T17:09:00 Let's Encrypt
beta.business.usa.gov CT Log Expired 20 2017-03-01T00:00:00 GeoTrust Inc.
beta.gobierno.usa.gov CT Log Expired 25 2017-08-28T00:00:00 GeoTrust Inc.
beta.usa.gov CT Log Current beta.usa.gov.external-domains-production.cloud.gov. 25 2017-08-28T00:00:00 GeoTrust Inc.
blm.sites.usa.gov CT Log Expired 61 2018-05-29T00:00:00 DigiCert Inc
blmca.sites.usa.gov CT Log Expired 33 2018-01-05T00:00:00 DigiCert Inc
blog.usa.gov CT Log Current blog.usa.gov.external-domains-production.cloud.gov. 73 2019-10-03T00:00:00 "CloudFlare, GeoTrust Inc.
buscador.usa.gov CT Log Current buscador.sites.infr.search.usa.gov. 76 2020-08-20T19:37:00 Let's Encrypt
business.usa.gov CT Log Current business.usa.gov.external-domains-production.cloud.gov. 91 2020-03-06T16:15:28 Let's Encrypt, GeoTrust Inc., COMODO CA Limited, The USERTRUST Network, "GeoTrust
civilrights.sites.usa.gov CT Log Expired 13 2018-04-23T00:00:00 DigiCert Inc
commissiononcare.sites.usa.gov CT Log Expired 33 2018-01-05T00:00:00 DigiCert Inc
communitysolutions.sites.usa.gov CT Log Expired 34 2018-01-05T00:00:00 DigiCert Inc
components.standards.usa.gov CT Log Current 29 2020-02-03T15:27:29 Let's Encrypt
connect.usa.gov CT Log Expired 35 2019-09-17T00:00:00 "CloudFlare, Let's Encrypt
crazyhat.sites.usa.gov CT Log Expired 13 2018-04-23T00:00:00 DigiCert Inc
crowdsourcing-toolkit.sites.usa.gov CT Log Expired 33 2018-01-05T00:00:00 DigiCert Inc
demo.search.usa.gov CT Log Expired 2 2019-12-02T18:11:14 Let's Encrypt
demo1.search.usa.gov CT Log Expired 34 2020-01-21T23:51:25 Let's Encrypt
demo1.staging.infr.search.usa.gov CT Log Expired 34 2020-01-21T23:51:25 Let's Encrypt
demo2.search.usa.gov CT Log Expired 38 2020-01-24T23:04:29 Let's Encrypt
demo2.staging.infr.search.usa.gov CT Log Expired 40 2020-01-24T23:04:29 Let's Encrypt
demo3.search.usa.gov CT Log Expired 35 2020-01-21T23:14:18 Let's Encrypt
demo3.staging.infr.search.usa.gov CT Log Expired 36 2020-01-21T23:14:18 Let's Encrypt
demo4.search.usa.gov CT Log Expired 18 2019-01-18T23:28:18 Let's Encrypt
demo4.staging.infr.search.usa.gov CT Log Expired 18 2019-01-18T23:28:18 Let's Encrypt
demo5.search.usa.gov CT Log Expired 2 2017-10-20T02:34:56 Let's Encrypt
demo5.staging.infr.search.usa.gov CT Log Expired 2 2017-10-20T02:34:56 Let's Encrypt
dev-business.usa.gov CT Log Expired 16 2016-08-27T00:00:00 GeoTrust Inc.
dgdev.sites.usa.gov CT Log Expired 12 2018-05-22T00:00:00 DigiCert Inc
dotgov.sites.usa.gov CT Log Expired 13 2018-04-23T00:00:00 DigiCert Inc
epa-notice.usa.gov CT Log Expired 46 2020-08-11T19:31:05 Let's Encrypt
fcsm.sites.usa.gov CT Log Expired 33 2018-01-05T00:00:00 DigiCert Inc
fedstats.sites.usa.gov CT Log Expired 33 2018-01-05T00:00:00 DigiCert Inc
feedback-staging.usa.gov CT Log Expired 35 2020-08-12T23:31:13 Let's Encrypt
feedback.usa.gov CT Log Expired 146 2020-08-12T22:31:29 Let's Encrypt, DigiCert Inc, GeoTrust Inc., "GoDaddy.com
financialprotection.usa.gov CT Log Expired 16 2017-03-01T00:00:00 GeoTrust Inc.
fmi.sites.usa.gov CT Log Expired 15 2018-04-19T00:00:00 DigiCert Inc
fsgb.sites.usa.gov CT Log Expired 12 2018-05-22T00:00:00 DigiCert Inc
gobierno.usa.gov CT Log Expired 139 2020-09-15T17:52:33 Let's Encrypt, GeoTrust Inc., "GoDaddy.com
govt-urls.usa.gov CT Log Expired 15 2019-05-10T13:51:50 Let's Encrypt
gsa-ecas.usa.gov CT Log Expired 6 2020-08-31T15:57:39 Let's Encrypt
i14y.demo1.search.usa.gov CT Log Expired 1 2016-12-28T23:10:00 Let's Encrypt
i14y.search.usa.gov CT Log Expired 35 2020-07-28T15:25:12 Let's Encrypt
i14y.usa.gov CT Log Expired 42 2020-07-28T15:25:12 Let's Encrypt
iciwarm.sites.usa.gov CT Log Expired 33 2018-01-05T00:00:00 DigiCert Inc
images.usa.gov DNS Current 285be84fb617dbd13607-633e79af86eef6fa3040b8a64f85b956.r50.cf2.rackcdn.com
innovationfellows.usa.gov CT Log Expired 35 2015-04-27T19:48:23 GeoTrust Inc., "GeoTrust, Cybertrust Inc, COMODO CA Limited
isdc.sites.usa.gov CT Log Expired 33 2018-01-05T00:00:00 DigiCert Inc
kibana.demo1.search.usa.gov CT Log Expired 34 2020-01-21T23:51:25 Let's Encrypt
kibana.demo2.search.usa.gov CT Log Expired 38 2020-01-24T23:04:29 Let's Encrypt
kibana.demo3.search.usa.gov CT Log Expired 35 2020-01-21T23:14:18 Let's Encrypt
kibana.demo4.search.usa.gov CT Log Expired 18 2019-01-18T23:28:18 Let's Encrypt
kibana.demo5.search.usa.gov CT Log Expired 2 2017-10-20T02:34:56 Let's Encrypt
kibana.search.usa.gov CT Log Expired 67 2020-03-04T13:48:45 Let's Encrypt
kibana5.demo1.search.usa.gov CT Log Expired 23 2020-01-21T23:51:25 Let's Encrypt
kibana5.demo2.search.usa.gov CT Log Expired 27 2020-01-24T23:04:29 Let's Encrypt
kibana5.demo3.search.usa.gov CT Log Expired 26 2020-01-21T23:14:18 Let's Encrypt
kibana5.demo4.search.usa.gov CT Log Expired 11 2019-01-18T23:28:18 Let's Encrypt
kibana5.search.usa.gov CT Log Expired 27 2020-03-18T19:59:26 Let's Encrypt
kibana6.search.usa.gov CT Log Expired 2 2020-03-18T19:59:26 Let's Encrypt
kids.usa.gov CT Log Expired 90 2020-03-09T17:49:00 Let's Encrypt, GeoTrust Inc., COMODO CA Limited, The USERTRUST Network, "GeoTrust
labs.usa.gov CT Log Expired 38 2020-08-12T15:31:05 Let's Encrypt
lets-encrypt.infr.search.usa.gov CT Log Expired 23 2020-05-04T03:14:53 Let's Encrypt
m.usa.gov CT Log Expired 144 2020-09-15T17:52:33 Let's Encrypt
mip.sites.usa.gov CT Log Expired 12 2018-05-22T00:00:00 DigiCert Inc
msct.sites.usa.gov CT Log Expired 15 2018-04-19T00:00:00 DigiCert Inc
my.usa.gov CT Log Expired 162 2020-09-15T17:52:33 Let's Encrypt, "GoDaddy.com
newtech4fedlib.sites.usa.gov CT Log Expired 15 2018-04-20T00:00:00 DigiCert Inc
nihseniorhealth.sites.usa.gov CT Log Expired 15 2018-04-20T00:00:00 DigiCert Inc
notice.usa.gov CT Log Expired 162 2020-09-15T17:52:33 Let's Encrypt
notifications.usa.gov CT Log Expired 162 2020-09-15T17:52:33 Let's Encrypt
nsta.sites.usa.gov CT Log Expired 12 2018-05-22T00:00:00 DigiCert Inc
opahit.sites.usa.gov CT Log Expired 15 2018-04-20T00:00:00 DigiCert Inc
open-staging.usa.gov CT Log Expired 37 2020-08-12T22:31:34 Let's Encrypt
open.usa.gov CT Log Expired 37 2020-08-12T22:31:03 Let's Encrypt
participation.usa.gov CT Log Expired 127 2020-08-12T22:31:55 Let's Encrypt, DigiCert Inc, GeoTrust Inc., "GeoTrust
pca.sites.usa.gov CT Log Expired 12 2018-05-22T00:00:00 DigiCert Inc
pianc.sites.usa.gov CT Log Expired 15 2018-04-20T00:00:00 DigiCert Inc
presidentialtransition.usa.gov CT Log Expired 64 2017-10-17T00:00:00 GeoTrust Inc.
promotions.usa.gov CT Log Expired 161 2020-09-15T17:52:33 Let's Encrypt
proxylb.us-east-1.infr.search.usa.gov CT Log Expired 101 2020-08-20T19:37:00 Let's Encrypt
proxylb.us-west-2.infr.search.usa.gov CT Log Expired 5 2016-04-01T19:36:00 Let's Encrypt
publications.usa.gov CT Log Expired 143 2020-09-15T17:52:33 Let's Encrypt
rcfl.sites.usa.gov CT Log Expired 15 2018-04-19T00:00:00 DigiCert Inc
registry.usa.gov CT Log Expired 162 2020-09-15T17:52:33 Let's Encrypt
resque.demo1.search.usa.gov CT Log Expired 32 2020-01-21T23:51:25 Let's Encrypt
resque.demo2.search.usa.gov CT Log Expired 34 2020-01-24T23:04:29 Let's Encrypt
resque.demo3.search.usa.gov CT Log Expired 33 2020-01-21T23:14:18 Let's Encrypt
resque.demo4.search.usa.gov CT Log Expired 16 2019-01-18T23:28:18 Let's Encrypt
resque.demo5.search.usa.gov CT Log Expired 2 2017-10-20T02:34:56 Let's Encrypt
resque.search.usa.gov CT Log Expired 73 2020-08-20T19:37:00 Let's Encrypt
rtv.usa.gov CT Log Expired 60 2015-10-16T00:00:00 GeoTrust Inc.
sbalearning.sites.usa.gov CT Log Expired 12 2018-05-22T00:00:00 DigiCert Inc
search-prerelease1.usa.gov CT Log Expired 9 2017-10-03T15:49:45 Let's Encrypt
search-prerelease2.usa.gov CT Log Expired 10 2017-10-03T15:55:41 Let's Encrypt
search-prerelease3.usa.gov CT Log Expired 7 2017-10-03T15:59:45 Let's Encrypt
search-prerelease4.usa.gov CT Log Expired 5 2017-04-28T16:28:00 Let's Encrypt
search.usa.gov CT Log Expired 128 2020-08-20T19:37:00 Let's Encrypt, COMODO CA Limited, The USERTRUST Network, GeoTrust Inc., "GeoTrust
searchstats.usa.gov CT Log Expired 25 2017-03-01T15:16:00 Let's Encrypt
sffeb.sites.usa.gov CT Log Expired 17 2018-04-19T00:00:00 DigiCert Inc
sites.usa.gov CT Log Expired 130 2018-05-29T00:00:00 DigiCert Inc, "GoDaddy.com, Symantec Corporation, GeoTrust Inc., Verizon Enterprise Solutions
stage-beta.gobierno.usa.gov CT Log Expired 18 2017-03-01T00:00:00 GeoTrust Inc.
stage-beta.usa.gov CT Log Expired 18 2017-03-01T00:00:00 GeoTrust Inc.
stage-business.usa.gov CT Log Expired 40 2017-10-17T00:00:00 GeoTrust Inc.
staging-vote.usa.gov CT Log Expired 9 2017-03-01T00:00:00 GeoTrust Inc.
staging.apps.usa.gov CT Log Expired 45 2017-03-01T00:00:00 GeoTrust Inc., "GeoTrust
staging.my.usa.gov CT Log Expired 1 2015-12-17T00:00:00 COMODO CA Limited
staging.usa.gov CT Log Expired 45 2017-03-01T00:00:00 GeoTrust Inc., "GeoTrust
standards.usa.gov CT Log Expired 32 2020-02-03T15:27:29 Let's Encrypt
stats.search.usa.gov CT Log Expired 40 2019-10-14T13:41:40 Let's Encrypt
stratblog.sites.usa.gov CT Log Expired 17 2018-04-19T00:00:00 DigiCert Inc
survey.usa.gov CT Log Expired 54 2017-08-28T00:00:00 GeoTrust Inc., "GeoTrust, COMODO CA Limited
tell-us.usa.gov CT Log Expired 154 2020-09-15T17:52:33 Let's Encrypt
tellus.usa.gov CT Log Expired 165 2020-09-15T17:52:33 Let's Encrypt
tematres.demo1.search.usa.gov CT Log Expired 19 2019-07-09T23:30:37 Let's Encrypt
tematres.demo2.search.usa.gov CT Log Expired 23 2019-07-09T23:50:46 Let's Encrypt
tematres.demo3.search.usa.gov CT Log Expired 22 2019-07-09T23:34:59 Let's Encrypt
tematres.demo4.search.usa.gov CT Log Expired 13 2019-01-18T23:28:18 Let's Encrypt
tematres.demo5.search.usa.gov CT Log Expired 1 2017-10-20T02:34:56 Let's Encrypt
test.gsa-ecas.usa.gov CT Log Expired 196 2020-08-10T22:08:59 Let's Encrypt
test.search.usa.gov CT Log Expired 5 2012-11-02T00:00:00 COMODO CA Limited
twa800.sites.usa.gov CT Log Expired 67 2018-04-20T00:00:00 DigiCert Inc, GeoTrust Inc., "GeoTrust
usaceecopcx.sites.usa.gov CT Log Expired 15 2018-04-19T00:00:00 DigiCert Inc
uspto-dev-blog.sites.usa.gov CT Log Expired 12 2018-05-22T00:00:00 DigiCert Inc
uswds.sites.usa.gov CT Log Expired 15 2018-04-19T00:00:00 DigiCert Inc
vote.usa.gov CT Log Expired 169 2020-09-15T17:52:33 Let's Encrypt, GeoTrust Inc.
wellness.sites.usa.gov CT Log Expired 17 2018-04-20T00:00:00 DigiCert Inc
whldp.sites.usa.gov CT Log Expired 12 2018-05-22T00:00:00 DigiCert Inc
womenbizinfo.sites.usa.gov CT Log Expired 17 2018-04-20T00:00:00 DigiCert Inc
www.alpha.my.usa.gov CT Log Expired 1 2015-12-17T00:00:00 COMODO CA Limited
www.analytics.usa.gov CT Log Expired 2 2015-12-29T00:00:00 COMODO CA Limited
www.business.usa.gov CT Log Expired 54 2017-08-28T00:00:00 GeoTrust Inc., "GeoTrust, COMODO CA Limited
www.epa-notice.usa.gov CT Log Expired 9 2016-12-26T11:38:00 Let's Encrypt
www.feedback.usa.gov CT Log Expired 205 2020-09-15T17:52:33 Let's Encrypt, GeoTrust Inc., "GoDaddy.com
www.gobierno.usa.gov CT Log Expired 142 2020-09-15T17:52:33 Let's Encrypt
www.kids.usa.gov CT Log Expired 54 2017-08-28T00:00:00 GeoTrust Inc., "GeoTrust, COMODO CA Limited
www.my.usa.gov CT Log Expired 171 2020-09-15T17:52:33 Let's Encrypt, GeoTrust Inc., "GeoTrust
www.promotions.usa.gov CT Log Expired 161 2020-09-15T17:52:33 Let's Encrypt
www.search.usa.gov CT Log Expired 78 2020-08-20T19:37:00 Let's Encrypt
www.staging.my.usa.gov CT Log Expired 1 2015-12-17T00:00:00 COMODO CA Limited
www.usa.gov CT Log Expired 132 2015-10-16T00:00:00 GeoTrust Inc., COMODO CA Limited, The USERTRUST Network, "GeoTrust
www.vote.usa.gov CT Log Expired 6 2020-02-03T15:27:29 Let's Encrypt
Δ No Propagation Issues: All DNS records are synchronized between resolver and authoritative nameserver.
DNS Intelligence What does DNS look like right now — and what changed over time?
DNS Evidence Diff Side-by-side comparison
Resolver Records (Public DNS cache)
Authoritative Records (Source of truth)
A Synchronized 1 / 1 records
23.22.13.113
23.22.13.113
AAAA Synchronized 1 / 1 records
2600:1f18:f88:4313:6df7:f986:f915:78d6
2600:1f18:f88:4313:6df7:f986:f915:78d6
CAA RFC 8659 §4 0 / 0 records
No records
No records
DMARC _dmarc.usa.gov RFC 7489 §6.3 Synchronized 1 / 1 records
v=DMARC1; p=reject; pct=100; fo=1; ri=86400; rua=mailto:dmarcreports@gsa.gov,mailto:reports@dmarc.cyber.dhs.gov; ruf=mailto:dmarcfailures@gsa.gov
v=DMARC1; p=reject; pct=100; fo=1; ri=86400; rua=mailto:dmarcreports@gsa.gov,mailto:reports@dmarc.cyber.dhs.gov; ruf=mailto:dmarcfailures@gsa.gov
MX RFC 5321 0 / 0 records
No records
No records
NS RFC 1035 Synchronized 5 / 5 records
dns3.gsa.gov.
dns5.gsa.gov.
dns2.gsa.gov.
dns.gsa.gov.
dns.gsa.gov.
dns4.gsa.gov.
dns5.gsa.gov.
dns2.gsa.gov.
dns4.gsa.gov.
dns3.gsa.gov.
SOA RFC 1035 Synchronized 1 / 1 records
dns.gsa.gov. hostmaster.gsa.gov. 789057670 3600 180 1209600 3600
dns.gsa.gov. hostmaster.gsa.gov. 789057670 3600 180 1209600 3600
TXT RFC 7208 §4 Synchronized 4 / 4 records
v=spf1 include:amazonses.com include:532040.spf10.hubspotemail.net ~all
amazonses:X5JKkKWosJlNPD8iJfPvNksuvQJzup3fDYEJtve9l20=
MS=ms45746088
MS=ms45746088
amazonses:X5JKkKWosJlNPD8iJfPvNksuvQJzup3fDYEJtve9l20=
d1rt4thgsoin5q.cloudfront.net
d1rt4thgsoin5q.cloudfront.net
v=spf1 include:amazonses.com include:532040.spf10.hubspotemail.net ~all
DNS History Timeline BETA
Your key is sent directly to SecurityTrails and is never stored on our servers. Get an API key
DNS History Timeline BETA

When was a record added, removed, or changed — and could that change be the problem?

Analyze Another Domain

Confirm Your Email Configuration

This tool analyzes DNS records, but to verify actual email delivery, send a test email to Red Sift Investigate. Their tool shows exactly how your emails arrive, including SPF/DKIM/DMARC pass/fail results in the headers.

DATA FRESHNESS & METHODOLOGY

All security-critical records (SPF, DMARC, DKIM, DANE/TLSA, DNSSEC, MTA-STS, TLS-RPT, BIMI, CAA) are queried live from authoritative nameservers and cross-referenced against 5 independent public DNS resolvers (Cloudflare, Google, Quad9, OpenDNS, DNS4EU) at the time of each analysis. No security verdict uses cached data.

Registrar data (RDAP) is cached for up to 24 hours because domain ownership and registration details change infrequently. Certificate Transparency logs (subdomain discovery via RFC 6962) are cached for 1 hour because CT entries are append-only historical records. Sections using cached data are marked with a CACHED badge; live queries show LIVE.

Intelligence Sources

This analysis used 4 DNS resolvers (consensus), reverse DNS (PTR), Team Cymru (ASN attribution), IANA RDAP (registrar), crt.sh (CT logs), and SMTP probing (transport). All using open-standard protocols.

Full List
Verify Report Integrity SHA-3-512 Has this report been altered since generation? Verify below

This cryptographic hash seals the analysis data, domain, timestamp, and tool version into a tamper-evident fingerprint. Any modification to the report data will produce a different hash. This is distinct from the posture hash (used for drift detection) — the integrity hash uniquely identifies this specific report instance.

c45e44ae9806c5d9b2124a08668f997f9b48f1362a7b1fcde9fcb5fbf438278f927b8932685c908e1fb34d13d46a0b8eef01780cac234814d21708deb739f419
Evaluations reference 12 RFCs. Methods are reproducible using the verification commands provided. Results reflect DNS state at 15 Feb 2026, 00:08 UTC.

Download the intelligence dump and verify its integrity, like you would a Kali ISO or any critical artifact. The SHA-3-512 checksum covers every byte of the download — deterministic serialization ensures identical hashes across downloads.

After downloading, verify with any of these commands:

Tip: cd ~/Downloads first (or wherever you saved the files).

OpenSSL + Sidecar (macOS, Linux, WSL)
cat dns-intelligence-usa.gov.json.sha3 && echo '---' && openssl dgst -sha3-512 dns-intelligence-usa.gov.json
Python 3 (cross-platform)
python3 -c "import hashlib; print(hashlib.sha3_512(open('dns-intelligence-usa.gov.json','rb').read()).hexdigest())"
sha3sum (coreutils 9+)
sha3sum -a 512 dns-intelligence-usa.gov.json
Compare the output against the .sha3 file or the checksum API at /api/analysis/883/checksum. Hash algorithm: SHA-3-512 (Keccak, NIST FIPS 202).

Every finding in this report is backed by DNS queries you can run yourself. These vetted one-liners reproduce the exact checks used to build this report for usa.gov. Our analysis adds multi-resolver consensus, RFC-based evaluation, and cross-referencing — but the underlying data is always independently verifiable. We are intelligence analysts, not gatekeepers.

DNS Records

Query A records (IPv4) RFC 1035
dig +noall +answer usa.gov A
Query AAAA records (IPv6) RFC 1035
dig +noall +answer usa.gov AAAA
Query MX records (mail servers) RFC 1035
dig +noall +answer usa.gov MX
Query NS records (nameservers) RFC 1035
dig +noall +answer usa.gov NS
Query TXT records RFC 1035
dig +noall +answer usa.gov TXT

Email Authentication

Check SPF record RFC 7208
dig +short usa.gov TXT | grep -i spf
Check DMARC policy RFC 7489
dig +short _dmarc.usa.gov TXT
Check DKIM key for selector 'default' RFC 6376
dig +short default._domainkey.usa.gov TXT
Check DKIM key for selector 'google' RFC 6376
dig +short google._domainkey.usa.gov TXT
Check DKIM key for selector 'selector1' RFC 6376
dig +short selector1._domainkey.usa.gov TXT
Check DKIM key for selector 'selector2' RFC 6376
dig +short selector2._domainkey.usa.gov TXT

Domain Security

Check DNSSEC DNSKEY records RFC 4035
dig +dnssec +noall +answer usa.gov DNSKEY
Check DNSSEC DS records RFC 4035
dig +noall +answer usa.gov DS
Validate DNSSEC chain (requires DNSSEC-validating resolver) RFC 4035
dig +dnssec +cd usa.gov A @1.1.1.1

Transport Security

Check TLSA record (replace MX_HOST with actual MX) RFC 7672
dig +noall +answer _25._tcp.MX_HOST TLSA
Check MTA-STS DNS record RFC 8461
dig +short _mta-sts.usa.gov TXT
Fetch MTA-STS policy file RFC 8461
curl -sL https://mta-sts.usa.gov/.well-known/mta-sts.txt
Check TLS-RPT record RFC 8460
dig +short _smtp._tls.usa.gov TXT

Brand & Trust

Check BIMI record BIMI Draft
dig +short default._bimi.usa.gov TXT
Check CAA records (certificate authority authorization) RFC 8659
dig +noall +answer usa.gov CAA

DNS Records

Check HTTPS/SVCB records RFC 9460
dig +noall +answer usa.gov HTTPS

Domain Security

Check CDS/CDNSKEY automation records RFC 7344
dig +noall +answer usa.gov CDS

Infrastructure Intelligence

RDAP domain registration lookup RFC 9083
curl -sL 'https://rdap.org/domain/usa.gov' | python3 -m json.tool | head -50
Search Certificate Transparency logs RFC 6962
curl -s 'https://crt.sh/?q=%25.usa.gov&output=json' | python3 -c "import json,sys; [print(e['name_value']) for e in json.load(sys.stdin)]" | sort -u | head -20
Check security.txt RFC 9116
curl -sL https://usa.gov/.well-known/security.txt | head -20

AI Surface

Check for llms.txt
curl -sI https://usa.gov/llms.txt | head -5
Check robots.txt for AI crawler rules
curl -s https://usa.gov/robots.txt | grep -i -E 'GPTBot|ChatGPT|Claude|Anthropic|Google-Extended|CCBot|PerplexityBot'

Infrastructure Intelligence

ASN lookup for 23.22.13.113 (Team Cymru)
dig +short 113.13.22.23.origin.asn.cymru.com TXT
Commands use dig, openssl, and curl — standard tools available on macOS, Linux, and WSL. Results may vary slightly due to DNS propagation timing and resolver caching.
Intelligence Confidence Audit Engine Verified · 9/9 Evaluated
How confident are these results? Each protocol is independently verified against RFC standards. No self-awarded badges.
SPF
Verified 4877 runs
DKIM
Verified 4695 runs
DMARC
Verified 4860 runs
DANE/TLSA
Verified 4679 runs
DNSSEC
Verified 4858 runs
BIMI
Verified 4694 runs
MTA-STS
Verified 4697 runs
TLS-RPT
Verified 4699 runs
CAA
Verified 4691 runs
Maturity: Development Verified Consistent Gold Gold Master
Running Multi-Source Intelligence Audit

usa.gov

0s
DNS records — Cloudflare, Google, Quad9, OpenDNS, DNS4EU
Email auth — SPF, DMARC, DKIM selectors
DNSSEC chain of trust & DANE/TLSA
Certificate Transparency & subdomain discovery
SMTP transport & STARTTLS verification
MTA-STS, TLS-RPT, BIMI, CAA
Registrar & infrastructure analysis
Intelligence Classification & Interpretation

Every result includes terminal commands you can run to independently verify the underlying data. No proprietary magic.