CONTINUOUS INTERNET TELEMETRY24H DRIFT12,660 material changesacross 11,816 domains · 24h to ~25m ago · +3,897 vs yesterdayNOW560 curated domains not reachablelast probe, steadySITE ERRORS34,304 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 156,289 sites429 rate-limit / 403 bot-block, a posture signalMOVERokta.comNo mail routes in the latest observation

ustda.gov

Observed Aug 2, 2026, 12:36 UTC (21h ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation - watch it for 5-minute checks.

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Up right now
Email byMicrosoft 365
Secured byLet's Encrypt
IPv6 · 1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat ustda.gov actually stands on - every host below is a signed observation
ustda.gov
A / AAAA
3.171.85.213.171.85.1033.171.85.823.171.85.110+8 more
2600serves the site
NS
ivy.ns.cloudflare.compablo.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
ustda-gov.mail.protection.outlook.com
Microsoft 365receives its email
TLS
ustda.gov
Let's Encryptissued its certificate

DNS Records

A 4

  • 3.171.85.21
  • 3.171.85.103
  • 3.171.85.82
  • 3.171.85.110

AAAA 8

  • 2600:9000:28a9:3a00:3:7cb8:b840:93a1
  • 2600:9000:28a9:5600:3:7cb8:b840:93a1
  • 2600:9000:28a9:3e00:3:7cb8:b840:93a1
  • 2600:9000:28a9:2200:3:7cb8:b840:93a1
  • 2600:9000:28a9:8400:3:7cb8:b840:93a1
  • 2600:9000:28a9:c600:3:7cb8:b840:93a1
  • 2600:9000:28a9:400:3:7cb8:b840:93a1
  • 2600:9000:28a9:f400:3:7cb8:b840:93a1

MX 1

  • 0ustda-gov.mail.protection.outlook.com

TXT 3

  • MS=ms84722782
  • apple-domain-verification=mW44qrbLrbq2HlVb
  • v=spf1 include:spf.protection.outlook.com -all

NS 2

  • ivy.ns.cloudflare.com
  • pablo.ns.cloudflare.com

SOA 1

  • ivy.ns.cloudflare.com dns.cloudflare.com

SRV 1

  • autodiscover.outlook.com:443 p0

DMARC_RECORDS 1

  • v=DMARC1;p=reject;fo=1;ruf=mailto:dmarc@ustda.gov;rua=mailto:reports@dmarc.cyber.dhs.gov

BIMI_RECORDS 1

  • v=BIMI1; l=https://s3-us-gov-west-1.amazonaws.com/cg-1d32e557-abc7-4711-82d2-4c9204a2971c/USTDA_LOGO_SVG.svg

TLS Certificates (3)

Common NameIssuerExpires
ustda.gov C=US, O=Let's Encrypt, CN=YR2 Tue, 13 Oct 2026 06:21:21 +0000
YR2 C=US, O=ISRG, CN=Root YR Sat, 02 Sep 2028 23:59:59 +0000
Root YR C=US, O=Internet Security Research Group, CN=ISRG Root X1 Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (1)

The proof

Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.

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Ed25519 Receipt

Receipt ID
rcpt_9e9edc5a41a379e0
Output Hash
e7e68cc2ba1a1d81de58e5fdf208e22959c174073c942613e00f2742e963881c
Signature
ed25519:1b81c1dc0f6a804c8fee7499b1df8b62206d6facffe50db1d7f86bd4e4b79177c42235c4eb4d6f7b4222ab19c0547ae21ab09fe02d970932f314afdebaa36f00
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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