CONTINUOUS INTERNET TELEMETRY24H DRIFT38,088 material changesacross 34,280 domains · 24h to ~35m agoDNS DRIFT52 domains changed DNS providertop destination koaladns.com · +30 vs yesterdayNOW543 curated domains not reachablelast probe, steadySITE ERRORS33,703 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 157,225 sites429 rate-limit / 403 bot-block, a posture signal

usdf.org

Observed Aug 3, 2026, 02:12 UTC (2d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of usdf.org was taken 2d ago

usdf.org is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting usdf.org under watch moves it to the fast lane, where DomainDrift re-checks it about every 5 minutes and signs each reading, so a change becomes a dated event within minutes instead of waiting for the sweep to come round.

Watch usdf.org Watching a domain needs a DRM3 account. The reading above stays free and public either way.
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Up right now
Email byAmazon SES
Secured byDigiCert
1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat usdf.org actually stands on - every host below is a signed observation
usdf.org
A / AAAA
24.142.141.115
unattributedserves the site
NS
ns49.worldnic.comns50.worldnic.com
worldnic.comanswers its DNS
MX
d66665a.ess.barracudanetworks.comd66665b.ess.barracudanetworks.com
Amazon SESreceives its email
TLS
usdf.org
DigiCert Incissued its certificate

DNS Records

A 1

  • 24.142.141.115

MX 2

  • 10d66665a.ess.barracudanetworks.com
  • 20d66665b.ess.barracudanetworks.com

TXT 3

  • MS=ms27599513
  • v=spf1 ip4:24.142.141.114 ip4:192.168.1.23 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com include:amazonses.com -all
  • bb8cbb15da703e1764e9a71991c7130f

NS 2

  • ns49.worldnic.com
  • ns50.worldnic.com

SOA 1

  • NS49.WORLDNIC.COM namehost\@WORLDNIC.COM

DMARC_RECORDS 1

  • v=DMARC1; p=none; rua=mailto:dmarc@usdf.org;

TLS Certificates (2)

Common NameIssuerExpires
usdf.org C=US, O=DigiCert Inc, CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1 Fri, 08 Jan 2027 23:59:59 +0000
DigiCert Global G2 TLS RSA SHA256 2020 CA1 C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G2 Sat, 29 Mar 2031 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_3211add5409038db
Output Hash
19c23403d69c82e6f9ac706a21e26ed4cb608b5a1e926d6323cac8e413fb25f5
Signature
ed25519:0baec5031b6c78cdb5915882f3e0b5a51ee8e68df80c188dc7693b6726db57243df55a51bcbd3a27aee327b40610ca6fbc796db1cf3b2d59adecb5633eff1d0e
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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