CONTINUOUS INTERNET TELEMETRY24H DRIFT48,509 material changesacross 45,523 domains · 24h to ~3h ago · -13,567 vs yesterdayROTATION51 domains moved DNS from magpiedns.com to koaladns.com, 51 moved backa rotation loop, not a migration · 24hNOW531 curated domains not reachablelast probe, steadySITE ERRORS33,881 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 120,540 sites429 rate-limit / 403 bot-block, a posture signal

arcg.at

Observed Aug 2, 2026, 20:28 UTC (4d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of arcg.at was taken 4d ago

arcg.at is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting arcg.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 arcg.at Watching a domain needs a DRM3 account. The reading above stays free and public either way.
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Up right now
Secured byLet's Encrypt
1 subdomain · domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat arcg.at actually stands on - every host below is a signed observation
arcg.at
A / AAAA
195.191.252.26
unattributedserves the site
NS
helium.ns.hetzner.dehydrogen.ns.hetzner.comoxygen.ns.hetzner.com
hetzner.de + hetzner.comanswers its DNS
MX
mail.amateurradioclubgraz.at
amateurradioclubgraz.atreceives its email
TLS
arcg.at
Let's Encryptissued its certificate

DNS Records

A 1

  • 195.191.252.26

MX 1

  • 100mail.amateurradioclubgraz.at

TXT 1

  • v=spf1 ip4:195.191.252.26 -all

NS 3

  • helium.ns.hetzner.de
  • hydrogen.ns.hetzner.com
  • oxygen.ns.hetzner.com

SOA 1

  • hydrogen.ns.hetzner.com dns.hetzner.com

SRV 1

  • mail.amateurradioclubgraz.at.arcg.at:443 p0

DMARC_RECORDS 1

  • v=DMARC1; p=reject; rua=mailto:dmarc@arcg.at; adkim=r; aspf=r; pct=100; ri=86400

BIMI_RECORDS 1

  • v=BIMI1; l=https://stradnerkogel.arcg.at/ARCG.svg

TLS Certificates (4)

Common NameIssuerExpires
arcg.at C=US, O=Let's Encrypt, CN=YE1 Fri, 16 Oct 2026 06:44:56 +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_283c04297ec6eb4d
Output Hash
dd83698b63ed5d7579ba604d7a8d0f0c9809dca790ffba1c24c7559a06c8cb7a
Signature
ed25519:a061130c8b34dfa0e427566caefb7c1e4bcd31c0f22365d99654d1e8af8e498d3e289a94ba6d32feb473f1ed67500768ca4376e614fdf99f4d18ab6c31dcba01
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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