rubi.cat

Observed Aug 11, 2026, 05:43 UTC (1d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of rubi.cat was taken 1d ago

rubi.cat is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting rubi.cat 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 rubi.cat Watching a domain needs a DRM3 account. The reading above stays free and public either way.
Up right now
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 rubi.cat actually stands on - every host below is a signed observation
rubi.cat
A / AAAA
18.153.162.82
unattributedserves the site
NS
leonidas.ns.cloudflare.commartha.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
mx-01-eu-central-1.prod.hydra.sophos.commx-02-eu-central-1.prod.hydra.sophos.com
sophos.comreceives its email
TLS
rubi.cat
Let's Encryptissued its certificate

DNS Records

A 1

  • 18.153.162.82

MX 2

  • 10mx-01-eu-central-1.prod.hydra.sophos.com
  • 20mx-02-eu-central-1.prod.hydra.sophos.com

TXT 4

  • 1697698606540
  • 3iiee75cra5ims1n1pha5mrane
  • sophos-domain-verification=c4e95cba19a6739a819453ece43a1e5555f09fff
  • v=spf1 include:_spf.prod.hydra.sophos.com ~all

NS 2

  • leonidas.ns.cloudflare.com
  • martha.ns.cloudflare.com

SOA 1

  • leonidas.ns.cloudflare.com dns.cloudflare.com

DMARC_RECORDS 1

  • v=DMARC1; p=none; rua=mailto:sistemes@ajrubi.cat

TLS Certificates (3)

Common NameIssuerExpires
rubi.cat C=US, O=Let's Encrypt, CN=YR2 Tue, 27 Oct 2026 00:35:56 +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; the only network request the check makes is for the published public keys.

Verify this receipt

Ed25519 Receipt

Receipt ID
rcpt_1c29b08da0c59b09
Output Hash
ffa70c6eb735c494af48aa45d45f8ef8de13c721be8533dbc56ccd2c40a169e4
Signature
ed25519:8f5f1c84a2133a3decce1d6f3c57e8b90c0743403c45ff0fc6fa5b267a55c5da8cb4c7bba17d5d886e95f1e22547681715ebce6c5734f8ac28b6f3054119c507
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
Verify this in your browser
CONTINUOUS INTERNET TELEMETRY24H DRIFT31,069 material changesacross 27,732 domains · 24h to ~40m ago · +19,271 vs yesterdayROTATION61 domains moved DNS from magpiedns.com to koaladns.com, 60 moved backa rotation loop, not a migration · 24hNOW520 curated domains not reachablelast probe, steadySITE ERRORS36,547 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 116,586 sites429 rate-limit / 403 bot-block, a posture signal