saclibrary.org

Observed Aug 9, 2026, 19:10 UTC (6d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of saclibrary.org was taken 6d ago

saclibrary.org is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting saclibrary.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 saclibrary.org Watching a domain needs a DRM3 account. The reading above stays free and public either way.
Verify this receipt yourself + Watch this domain
Up right now
Email byMailgun
Secured byLet's Encrypt
Also usesAppleMicrosoft 365
tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat saclibrary.org actually stands on - every host below is a signed observation
saclibrary.org
A / AAAA
151.101.2.191
unattributedserves the site
NS
ns49.worldnic.comns50.worldnic.com
worldnic.comanswers its DNS
MX
mx2.saclibrary.iphmx.commx1.saclibrary.iphmx.com
Mailgunreceives its email
TLS
saclibrary.org
Let's Encryptissued its certificate

DNS Records

A 1

  • 151.101.2.191

MX 2

  • 11mx2.saclibrary.iphmx.com
  • 10mx1.saclibrary.iphmx.com

TXT 3

  • MS=ms23279670
  • apple-domain-verification=28nZ3mqIgZTAAX1T
  • v=spf1 a:esa1.saclibrary.iphmx.com a:esa2.saclibrary.iphmx.com ip4:192.245.61.1/24 ip4:54.203.234.54 ip4:149.72.192.49 ip4:168.245.125.165 ip4:23.23.246.226 ip4:216.17.118.230 ip4:12.133.120.135 ip4:76.227.222.171 ip4:12.53.31.120/29 ip4:12.198.149.18 ip4:12.198.149.240/29 include:spf.protection.outlook.com include:spf.mailjet.com include:mailgun.org ~all

NS 2

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

SOA 1

  • NS49.WORLDNIC.COM namehost.WORLDNIC.COM

DMARC_RECORDS 1

  • v=DMARC1;p=quarantine;sp=none;pct=100;rua=mailto:DMARC@saclibrary.org;ruf=mailto:DMARC@saclibrary.org;ri=86400;aspf=r;adkim=r;fo=1:s

TLS Certificates (3)

Common NameIssuerExpires
saclibrary.org C=US, O=Let's Encrypt, CN=YR2 Thu, 01 Oct 2026 13:16:59 +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 (0)

None observed.

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; the only network request the check makes is for the published public keys.

Verify this receipt

Ed25519 Receipt

Receipt ID
rcpt_bbdd5f136a95c7ed
Output Hash
64d1d9f22247fbe666a70cc73564f908f3752bbcea781eab053d0594261b1718
Signature
ed25519:04efd5ef0e93a7d9242d8f3d877771044f6a2461bda1645d66c2ad05acd78cff91fff98718b09a2d6fcbd7340ebd97e4bee40cee5f8e47f3baad5c42974a1e0a
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
Verify this in your browser
CONTINUOUS INTERNET TELEMETRY24H DRIFT45,889 material changesacross 44,128 domains · 24h to ~2h ago · +2,382 vs yesterdayROTATION60 domains moved DNS from magpiedns.com to koaladns.com, 59 moved backa rotation loop, not a migration · 24hNOW496 curated domains not reachablelast probe, steadySITE ERRORS36,298 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 117,240 sites429 rate-limit / 403 bot-block, a posture signal