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

barnard.edu

Observed Aug 3, 2026, 01:13 UTC (3d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of barnard.edu was taken 3d ago

barnard.edu is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting barnard.edu 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 barnard.edu Watching a domain needs a DRM3 account. The reading above stays free and public either way.
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Up right now
Email byGoogle Workspace
Secured byInternet2
Also usesGoogle Search Console
tranco_100k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat barnard.edu actually stands on - every host below is a signed observation
barnard.edu
A / AAAA
107.21.241.248
unattributedserves the site
NS
auth1.dns.cogentco.comext-ns1.columbia.eduauth2.dns.cogentco.com
cogentco.com + columbia.eduanswers its DNS
MX
aspmx3.googlemail.comaspmx2.googlemail.comalt2.aspmx.l.google.comalt1.aspmx.l.google.com+3 more
Google Workspacereceives its email
TLS
barnard.edu
Internet2issued its certificate

DNS Records

A 1

  • 107.21.241.248

MX 7

  • 30aspmx3.googlemail.com
  • 30aspmx2.googlemail.com
  • 20alt2.aspmx.l.google.com
  • 20alt1.aspmx.l.google.com
  • 10aspmx.l.google.com
  • 30aspmx5.googlemail.com
  • 30aspmx4.googlemail.com

TXT 9

  • v=spf1 include:_spf1.barnard.edu include:_spf2.barnard.edu include:_spf3.barnard.edu include:_spf4.barnard.edu include:_spf5.barnard.edu include:_spf.google.com ~all
  • adobe-idp-site-verification=3bfb883552fb8747cb677762940e97474e3fb2774e2c67b386858ecd664e0f3f
  • apple-domain-verification=HlAoa8IM6aV7MmdZ
  • MS=1C6AF196D8DC18F53F1F0B10BEE851A2B5060EB3
  • ca3-65ae654664ce477f8c147717eb515f8a
  • ca3-d23b1ab667fb42d0ad3c5995beac293b
  • google-site-verification=YaCwVI4VL-wywqQc9XFZJpt7Qq4YRR9qkIeM3SAmFWE
  • e2ma-verification=6xrgb
  • A893A0A4D0E704DBEBFA259871729BB2

NS 3

  • auth1.dns.cogentco.com
  • ext-ns1.columbia.edu
  • auth2.dns.cogentco.com

SOA 1

  • ext-ns1.columbia.edu hostmaster.columbia.edu

DMARC_RECORDS 1

  • v=DMARC1; p=none; rua=mailto:dmarc@barnard.edu

TLS Certificates (4)

Common NameIssuerExpires
barnard.edu C=US, O=Internet2, CN=InCommon RSA Server CA 2 Fri, 11 Dec 2026 23:59:59 +0000
InCommon RSA Server CA 2 C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority Mon, 15 Nov 2032 23:59:59 +0000
USERTrust RSA Certification Authority C=GB, ST=Greater Manchester, L=Salford, O=Comodo CA Limited, CN=AAA Certificate Services Sun, 31 Dec 2028 23:59:59 +0000
AAA Certificate Services C=GB, ST=Greater Manchester, L=Salford, O=Comodo CA Limited, CN=AAA Certificate Services Sun, 31 Dec 2028 23:59:59 +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_e81289d327edad1b
Output Hash
cd9325aee925022a68d79f9f8b1f005177ec12bcabc68a7d4439346e819c9b3a
Signature
ed25519:7b9cdb368b0a3b233581d67abaf4d807a381d5ec12a2df2ef7951e38fe7e52b9dfdc653fc06a52013074a84a72522ff3292b8d09a100aab0ea3325a61ccaf301
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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