CONTINUOUS INTERNET TELEMETRY24H DRIFT154 material changesacross 106 domains · +8 vs yesterdayEMAIL DRIFT1 domain switched email providertop destination xn----8sbafg9clhjcp.bgCERT DRIFT1 domains switched issuing CA24hNOW4,351 curated domains not answeringlast probe, steadyERRORS28,433 responded with an errorlast probe · 5xx / 404 / TLSTHROTTLED85,471 throttled or blocked our scanner429 rate-limit / 403 bot-blockMOVERgov.brAll nameservers removed (domain is dark)24H DRIFT154 material changesacross 106 domains · +8 vs yesterdayEMAIL DRIFT1 domain switched email providertop destination xn----8sbafg9clhjcp.bgCERT DRIFT1 domains switched issuing CA24hNOW4,351 curated domains not answeringlast probe, steadyERRORS28,433 responded with an errorlast probe · 5xx / 404 / TLSTHROTTLED85,471 throttled or blocked our scanner429 rate-limit / 403 bot-blockMOVERgov.brAll nameservers removed (domain is dark)

caltech.edu

Observed Jul 18, 2026, 12:02 UTC (3d ago). Every field below was attested with an Ed25519 signature at scan time.

Not responding
Runs onAmazon
Email byAmazon SES
Also usesZoom1Password
institutions
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat caltech.edu actually stands on - every host below is a signed observation
caltech.edu
A / AAAA
52.26.125.194
Amazonserves the site
NS
ns0090.secondary.cloudflare.comns0239.secondary.cloudflare.com
cloudflare.comanswers its DNS
MX
mx1.caltech.iphmx.commx2.caltech.iphmx.com
Amazon SESreceives its email

DNS Records

A 1

  • 52.26.125.194

MX 2

  • 10mx1.caltech.iphmx.com
  • 10mx2.caltech.iphmx.com

TXT 14

  • MS=ms43712753
  • iContact1389932
  • ZOOM_verify_a-Gb5-aqQgygEiKsnho63w
  • apple-domain-verification=KD7b3wNXe76BHRAV
  • autodesk-domain-verification=TtWEzwdFn86i9o8NX_8R
  • 1password-site-verification=VRLN67QMNNEPXIIREL6TDZABF4
  • amazonses:CBaUu/J2wBFtHuO9isUzHAXTnIWcN5RyPUBvggu7SNE=
  • amazonses:X9y0RbFXXvxu3ft83xg2e+YV++OUePTUSeCOdB3Chjg=
  • openai-domain-verification=dv-8LkNkbqCFWsyOdGQbgXugk2j
  • anthropic-domain-verification-rw8528=rFwrZAPawzCVNGD318e9zzavQ

NS 2

  • ns0090.secondary.cloudflare.com
  • ns0239.secondary.cloudflare.com

SOA 1

  • ns0090.secondary.cloudflare.com hostmaster.caltech.edu

SRV 2

  • autodiscover.outlook.com:443 p0
  • outlookweb.caltech.edu:445 p0

TLS Certificates (0)

None.

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; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for caltech.edu. It updates itself. It attests a signed observation - not that the site is safe.

DomainDrift signed-observation badge for caltech.edu <a href="https://domaindrift.io/t/caltech.edu"> <img src="https://domaindrift.io/badge/caltech.edu.svg" width="300" height="64" alt="DomainDrift signed observations for caltech.edu"> </a>

Ed25519 Receipt

Receipt ID
b3b1ddcd-9c58-43fc-997b-4d5fb819915b
Output Hash
f42d5bc86c97d25583df7e889916b53c433e11ea72a89528e8366ed584df01a1
Signature
ed25519:897d76fb96e92a6373117e27bcd33851069988455c0bbe7db4b19db998d66cecf84639ec388ab8474219bf3529b7aaeae61b9400e9cab6a8e030ceef5279d206
Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent
(genesis)
Plane
fast
Verify this in your browser