CONTINUOUS INTERNET TELEMETRY24H DRIFT46,719 material changesacross 45,086 domains · 24h to ~6h ago · +12,102 vs yesterdayROTATION56 domains moved DNS from magpiedns.com to koaladns.com, 56 moved backa rotation loop, not a migration · 24hNOW536 curated domains not reachablelast probe, steadySITE ERRORS33,814 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 134,598 sites429 rate-limit / 403 bot-block, a posture signal

youfirst.co

Observed Aug 2, 2026, 10:02 UTC (3d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of youfirst.co was taken 3d ago

youfirst.co is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting youfirst.co 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 youfirst.co Watching a domain needs a DRM3 account. The reading above stays free and public either way.
Verify this receipt yourself + Watch this domain
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Email byMailchimp
Secured byGlobalSign
Also usesFacebook/MetaGoogle Search Console
tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat youfirst.co actually stands on - every host below is a signed observation
youfirst.co
A / AAAA
52.143.148.21
unattributedserves the site
NS
nsa.perf1.frnsb.perf1.comnsc.perf1.com
perf1.fr + perf1.comanswers its DNS
MX
mx1.hc1124-27.c3s2.iphmx.commx2.hc1124-27.c3s2.iphmx.com
Mailchimpreceives its email
TLS
*.youfirst.co
GlobalSign nv-saissued its certificate

DNS Records

A 1

  • 52.143.148.21

MX 2

  • 10mx1.hc1124-27.c3s2.iphmx.com
  • 10mx2.hc1124-27.c3s2.iphmx.com

TXT 22

  • Rh7-J9K-P8k
  • MS=ms54598417
  • 53vp4shjp8lck3zl8gnctqqkqf51tsrv
  • jtqhm9wfjnq8bzk7qn6t2rccsmlgjtxx
  • lt8pwpwqd50dgc5ywb0knfxt44lj5nz9
  • vcps3k9rmhh41zsn19jy0rvc2kmqj2cw
  • xcj3p2m90m8r8q3lb4ppmvhnk54bsxwy
  • zr5pv8b1zt9ydjd2ctzk6qlvn6xfq1p4
  • msfpkey=46h1zgzk1tedrmzzu2qpadt5e
  • d365mktkey=6poka9onm8v1oq3njzv62kkrx

NS 3

  • nsa.perf1.fr
  • nsb.perf1.com
  • nsc.perf1.com

SOA 1

  • nsa.perf1.fr technical.nameshield.net

DMARC_RECORDS 1

  • v=DMARC1;p=reject;fo=1;ri=3600;rua=mailto:rua@gecina.fr,mailto:gecina@dr.dmarc.fr;ruf=mailto:ruf@gecina.fr

BIMI_RECORDS 1

  • v=BIMI1; l=https://document.gecina.fr/youfirst.svg

TLS Certificates (2)

Common NameIssuerExpires
*.youfirst.co C=BE, O=GlobalSign nv-sa, CN=GlobalSign RSA OV SSL CA 2018 Sun, 18 Oct 2026 09:04:22 +0000
GlobalSign RSA OV SSL CA 2018 2.5.4.11=GlobalSign Root CA - R3, O=GlobalSign, CN=GlobalSign Tue, 21 Nov 2028 00:00:00 +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.

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Ed25519 Receipt

Receipt ID
rcpt_531ac58727108ec6
Output Hash
04e74dd8f9c1f927be3e4df55a8b7db0a7d4c7e7c272902d0c70110185aab53e
Signature
ed25519:6d4727042c24a9437eef5861561bd21be8e93c191bb2a7042ab0b2b9656ec705fecc3a01a76d9703fa795c0238d6a976a68512d7e4d8773579d004550f6a1906
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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