zsi.at

Observed Aug 2, 2026, 21:23 UTC (8d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of zsi.at was taken 8d ago

zsi.at is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting zsi.at 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 zsi.at Watching a domain needs a DRM3 account. The reading above stays free and public either way.
Up right now
Email byMicrosoft 365
Secured byLet's Encrypt
1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat zsi.at actually stands on - every host below is a signed observation
zsi.at
A / AAAA
138.199.148.163
unattributedserves the site
NS
hermes.zsi.atns3.zsi.atzsi0.zsi.at
zsi.atanswers its DNS
MX
zsi-at.mail.protection.outlook.com
Microsoft 365receives its email
TLS
csi.ac.at
Let's Encryptissued its certificate

DNS Records

A 1

  • 138.199.148.163

MX 1

  • 0zsi-at.mail.protection.outlook.com

TXT 1

  • v=spf1 include:spf.protection.outlook.com ip4:193.170.154.128/25 ip6:2001:628:2050::2:0/112 ip4:193.170.153.25 ip4:193.170.153.28 -all

NS 3

  • hermes.zsi.at
  • ns3.zsi.at
  • zsi0.zsi.at

SOA 1

  • zsi0.zsi.at itadmin.zsi.at

DMARC_RECORDS 1

  • v=DMARC1; p=reject

TLS Certificates (4)

Common NameIssuerExpires
csi.ac.at C=US, O=Let's Encrypt, CN=YE1 Fri, 18 Sep 2026 15:21:02 +0000
YE1 C=US, O=ISRG, CN=Root YE Sat, 02 Sep 2028 23:59:59 +0000
Root YE C=US, O=Internet Security Research Group, CN=ISRG Root X2 Thu, 02 Sep 2032 23:59:59 +0000
ISRG Root X2 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; the only network request the check makes is for the published public keys.

Verify this receipt

Ed25519 Receipt

Receipt ID
rcpt_ef8347878d6e680c
Output Hash
788fd930ecd46582f65acc5b788c9cd95a684e541038e0ab4ab0e7582c48313f
Signature
ed25519:9559a92ac2216939dde52c17b3b2d99b9c1e4e78e971e90e57fd1d8de4dac6f4678a1be23693f018163f4336a8630ce489eb0f431437d2b94f4590cf77a96a01
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
Verify this in your browser
CONTINUOUS INTERNET TELEMETRY24H DRIFT50,293 material changesacross 42,593 domains · 24h to ~3h ago · +6,967 vs yesterdayROTATION56 domains moved DNS from koaladns.com to magpiedns.com, 54 moved backa rotation loop, not a migration · 24hNOW571 curated domains not reachablelast probe, steadySITE ERRORS34,235 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 116,267 sites429 rate-limit / 403 bot-block, a posture signal