study4.com

Observed 2026-07-12T13:12:38.328Z (11h ago). Every field below was attested with an Ed25519 signature at scan time.

Guarded by a firewall

Runs onCloudflare

Email byGoogle Workspace

Also usesGoogle Search Console

IPv6 · 3 subdomains · tranco_40k

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat study4.com actually stands on - every host below is a signed observation

study4.com

A / AAAA

172.67.73.88104.26.8.227104.26.9.2272606:4700:20::681a:9e3+2 more

Cloudflareserves the site

dorthy.ns.cloudflare.comajay.ns.cloudflare.com

cloudflare.comanswers its DNS

smtp.google.com

Google Workspacereceives its email

HTTPS probe

bot_blocked Blocked our probe (WAF / bot protection) 403 blocked by cloudflare - bot protection active

HTTP status403

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time5 ms

DNS resolutionNOERROR

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

DNS Records

A 3

172.67.73.88
104.26.8.227
104.26.9.227

AAAA 3

2606:4700:20::681a:9e3
2606:4700:20::681a:8e3
2606:4700:20::ac43:4958

MX 1

1smtp.google.com

TXT 9

zoho-verification=zb98914813.zmverify.zoho.com
cursor-domain-verification-8sqjbk=7iwUuGzZIXuIjSmaVuioHQqTj
google-site-verification=eQDQHsBrLtonmX1Sdl8ZGEM2Fh-UWbISNiVb2cFluYI
MS=ms27261699
v=spf1 include:zoho.com ~all
anthropic-domain-verification-atwhbh=mUW99R0IYb2WZ4Z87EYIyaxhM
apple-domain-verification=68AZnSihzLQZORD8
zoho-verification=zb66126777.zmverify.zoho.com
v=DNSSEC1; (detected)

NS 2

dorthy.ns.cloudflare.com
ajay.ns.cloudflare.com

SOA 1

ajay.ns.cloudflare.com dns.cloudflare.com

CAA 10

issuewild comodoca.com
issue letsencrypt.org
issuewild pki.goog; cansignhttpexchanges=yes
issuewild letsencrypt.org
issue pki.goog; cansignhttpexchanges=yes
issuewild ssl.com
issue ssl.com
issuewild digicert.com; cansignhttpexchanges=yes
issue comodoca.com
issue digicert.com; cansignhttpexchanges=yes

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 Connor observes and signs for study4.com. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/study4.com">
  <img src="https://domaindrift.io/badge/study4.com.svg"
       width="300" height="64" alt="Connor signed observations for study4.com">
</a>

Ed25519 Receipt

Receipt ID: 4bb82889-16ae-4f12-a7f1-48e6e9b87caa
Output Hash: ad7168cc9e0463c29f0bf927dd174be37b7998da6baedb02e082e9b33fd70be3
Signature: ed25519:e9862ddd4aef1a16c82919e6c0096b2d2a20d267ba8966bee04b87cce6b7d8f5622606829af2a0e1852057d97ea729f9df07efbb0ca96f9c6f5d31d67d18430a
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/study4.com