rc21.org

Observed Aug 10, 2026, 22:07 UTC (3d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of rc21.org was taken 3d ago

rc21.org is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting rc21.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 rc21.org Watching a domain needs a DRM3 account. The reading above stays free and public either way.
Up right now
Secured byActalis S.p.A.
Registered withTUCOWS.COM, CO.
IPv6 · domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat rc21.org actually stands on - every host below is a signed observation
rc21.org
A / AAAA
89.46.110.762a00:6d40:4:1::c319:76
2a00serves the site
NS
dns2.technorail.comdns4.arubadns.czdns.technorail.comdns3.arubadns.net
technorail.com + arubadns.cz + moreanswers its DNS
MX
mx.rc21.org
rc21.orgreceives its email
TLS
*.rc21.org
Actalis S.p.A.issued its certificate

DNS Records

A 1

  • 89.46.110.76

AAAA 1

  • 2a00:6d40:4:1::c319:76

MX 1

  • 10mx.rc21.org

TXT 1

  • v=spf1 include:_spf.aruba.it ~all

NS 4

  • dns2.technorail.com
  • dns4.arubadns.cz
  • dns.technorail.com
  • dns3.arubadns.net

SOA 1

  • dns.technorail.com hostmaster.rc21.org

SRV 3

  • imchat1.aruba.it:5222 p5
  • imchat1.aruba.it:5269 p5
  • autodiscover.aruba.it:443 p0

DMARC_RECORDS 1

  • v=DMARC1; p=none; adkim=r; aspf=r;

TLS Certificates (3)

Common NameIssuerExpires
*.rc21.org C=IT, ST=Bergamo, L=Ponte San Pietro, O=Actalis S.p.A., CN=Actalis Domain Validated TLS Server RSA CA 2025 Thu, 18 Feb 2027 21:42:34 +0000
Actalis Domain Validated TLS Server RSA CA 2025 C=IT, O=Actalis S.p.A., CN=Actalis TLS Server RSA Root CA 2025 Thu, 05 Jul 2035 12:59:32 +0000
Actalis TLS Server RSA Root CA 2025 C=IT, L=Milan, O=Actalis S.p.A./03358520967, CN=Actalis Authentication Root CA Sun, 22 Sep 2030 11:22:02 +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_00a7381bcdc32466
Output Hash
fdfef9330e53b4518030de01aa7aacdd1bc813981877152564d0d5bc8aa9ea4d
Signature
ed25519:c8ca06ce6244585b7709621fd6b0356681cc42acd2bc6e91a8d0f9b520838e26028d78b8fd6afe71ad63eb9bad0b3a3188b4e47d81286a7e2576cd962ed8210b
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
Verify this in your browser
CONTINUOUS INTERNET TELEMETRY24H DRIFT45,192 material changesacross 43,178 domains · 24h to ~2h ago · +1,110 vs yesterdayROTATION56 domains moved DNS from koaladns.com to kirklanddc.com, 54 moved backa rotation loop, not a migration · 24hNOW491 curated domains not reachablelast probe, steadySITE ERRORS36,483 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 115,730 sites429 rate-limit / 403 bot-block, a posture signal