CONTINUOUS INTERNET TELEMETRY24H DRIFT1,979 material changesacross 1,770 domains · -572 vs yesterdayDNS DRIFT16 domains changed DNS providertop destination cloudflare.comEMAIL DRIFT5 domains switched email providertop destination google.comCERT DRIFT1 domains switched issuing CA24h · -4 vs yesterdayNOW3,379 curated domains not answeringlast probe, steadyERRORS10,871 responded with an errorlast probe · 5xx / 404 / 429 / 40324H DRIFT1,979 material changesacross 1,770 domains · -572 vs yesterdayDNS DRIFT16 domains changed DNS providertop destination cloudflare.comEMAIL DRIFT5 domains switched email providertop destination google.comCERT DRIFT1 domains switched issuing CA24h · -4 vs yesterdayNOW3,379 curated domains not answeringlast probe, steadyERRORS10,871 responded with an errorlast probe · 5xx / 404 / 429 / 403

studyblue.com

Observed 2026-07-14T02:52:00.789Z (57m ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now
Runs onCloudflare
3 subdomains · push_legacy
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat studyblue.com actually stands on - every host below is a signed observation
studyblue.com
A / AAAA
18.173.121.4118.173.121.11318.173.121.10918.173.121.95
Cloudflareserves the site
NS
ns-774.awsdns-32.netns-1357.awsdns-41.orgns-1879.awsdns-42.co.ukns-301.awsdns-37.com
awsdns-32.net + awsdns-41.org + moreanswers its DNS

HTTPS probe

redirect Redirecting (3xx) 301 → https://www.chegg.com/flashcards/
HTTP status301
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time47 ms
DNS resolutionNOERROR
Redirect chain
https://www.chegg.com/flashcards/

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 4

  • 18.173.121.41
  • 18.173.121.113
  • 18.173.121.109
  • 18.173.121.95

NS 4

  • ns-774.awsdns-32.net
  • ns-1357.awsdns-41.org
  • ns-1879.awsdns-42.co.uk
  • ns-301.awsdns-37.com

SOA 1

  • ns-774.awsdns-32.net awsdns-hostmaster.amazon.com

TLS Certificates (0)

None.

Subdomains (3)

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 studyblue.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID
87dfa716-8055-4029-92a3-6a42b07ef512
Output Hash
677df78501fbf6950a393e6c51b6fab5087edc0410c4dd922e38aaf5eda4dbd1
Signature
ed25519:08703e07fb65a8bbca8da2a78ed7e32bac1e2dfdf470a032d4ff1eb4096b7e032d6d952524351b2d3df5b5cfbedb0379152acf9ba506c43e6a1f9771f46f0f08
Public Key
ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent
(genesis)
Plane
fast
Verify this in your browser