study4.com
Observed Jul 27, 2026, 09:46 UTC (5d ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation - watch it for 5-minute checks.
Guarded by a firewall
Runs onCloudflare
Email byGoogle Workspace
Secured byGoogle Trust Services
Also usesGoogle Search Console
IPv6 · 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
104.26.9.227104.26.8.227172.67.73.882606:4700:20::ac43:4958+2 more
Cloudflareserves the site
NS
ajay.ns.cloudflare.comdorthy.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
smtp.google.com
Google Workspacereceives its email
TLS
study4.com
Google Trust Servicesissued its certificate
DNS Records
A 3
104.26.9.227104.26.8.227172.67.73.88
AAAA 3
2606:4700:20::ac43:49582606:4700:20::681a:8e32606:4700:20::681a:9e3
MX 1
1smtp.google.com
TXT 8
MS=ms27261699anthropic-domain-verification-atwhbh=mUW99R0IYb2WZ4Z87EYIyaxhMapple-domain-verification=68AZnSihzLQZORD8cursor-domain-verification-8sqjbk=7iwUuGzZIXuIjSmaVuioHQqTjgoogle-site-verification=eQDQHsBrLtonmX1Sdl8ZGEM2Fh-UWbISNiVb2cFluYIv=spf1 include:zoho.com ~allzoho-verification=zb66126777.zmverify.zoho.comzoho-verification=zb98914813.zmverify.zoho.com
NS 2
ajay.ns.cloudflare.comdorthy.ns.cloudflare.com
SOA 1
ajay.ns.cloudflare.com dns.cloudflare.com
CAA 10
issue "comodoca.com"issue "digicert.com; cansignhttpexchanges=yes"issue "letsencrypt.org"issue "pki.goog; cansignhttpexchanges=yes"issue "ssl.com"issuewild "comodoca.com"issuewild "digicert.com; cansignhttpexchanges=yes"issuewild "letsencrypt.org"issuewild "pki.goog; cansignhttpexchanges=yes"issuewild "ssl.com"
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
study4.com |
C=US, O=Google Trust Services, CN=WE1 | Fri, 23 Oct 2026 13:15:01 +0000 |
WE1 |
C=US, O=Google Trust Services LLC, CN=GTS Root R4 | Tue, 20 Feb 2029 14:00:00 +0000 |
GTS Root R4 |
C=BE, O=GlobalSign nv-sa, 2.5.4.11=Root CA, CN=GlobalSign Root CA | Fri, 28 Jan 2028 00:00:42 +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; nothing leaves your machine.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_26b03931bcdb34e1- Output Hash
61fc52ab02319994bfaa000854710f0acc1ad5e231c66d618ac6709e912fd974- Signature
ed25519:47a5f5af2eafef8e29855e2a463ae7044979fc8808f53812b2166020795f3b0b9703a2b4eec861d52a8e2f7d2f25c26af4ff15e77c81ebc227503aa6597b1d07- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast