andrewgelman.com
Observed Jul 23, 2026, 02:07 UTC (2d 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
Secured byLet's Encrypt
tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat andrewgelman.com actually stands on - every host below is a signed observation
andrewgelman.com
A / AAAA
35.232.19.148
Cloudflareserves the site
NS
ns3.worldnic.comns4.worldnic.com
worldnic.comanswers its DNS
TLS
andrewgelman.com
Let's Encryptissued its certificate
DNS Records
A 1
35.232.19.148
NS 2
ns3.worldnic.comns4.worldnic.com
SOA 1
NS3.WORLDNIC.com namehost.WORLDNIC.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
andrewgelman.com |
C=US, O=Let's Encrypt, CN=YR2 | Sat, 03 Oct 2026 02:27:37 +0000 |
YR2 |
C=US, O=ISRG, CN=Root YR | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YR |
C=US, O=Internet Security Research Group, CN=ISRG Root X1 | Thu, 02 Sep 2032 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; nothing leaves your machine.
Verify this receiptPut the receipt on your own site. A live badge showing what DomainDrift observes and signs for andrewgelman.com. It updates itself. It attests a signed observation - not that the site is safe.
<a href="https://domaindrift.io/t/andrewgelman.com">
<img src="https://domaindrift.io/badge/andrewgelman.com.svg"
width="300" height="64" alt="DomainDrift signed observations for andrewgelman.com">
</a>
Ed25519 Receipt
- Receipt ID
rcpt_74f37e2d62e211a1- Output Hash
bb866c3bb2e3c8f45b676fbfda258467e59a2990d94d246c3de1c844615e1dad- Signature
ed25519:896c105fe5f3a3ab0320551743ce4115f2d93c26ec42752a295302adca9f65e8c787d7e4ef152071bf70c1a2b8a491b4ba3afabffcc3fad4c5889311f9ef5304- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast