numpy.org

Observed 2026-07-12T18:22:25.837Z (5h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

IPv6 · 1 subdomain · non_profit

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

INFRASTRUCTURE MAPwhat numpy.org actually stands on - every host below is a signed observation

numpy.org

A / AAAA

172.67.185.160104.21.19.752606:4700:3031::6815:134b2606:4700:3036::ac43:b9a0

Cloudflareserves the site

henry.ns.cloudflare.comkristin.ns.cloudflare.com

cloudflare.comanswers its DNS

HTTPS probe

ok Responding normally (2xx) 200 OK

HTTP status200

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time244 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 2

172.67.185.160
104.21.19.75

AAAA 2

2606:4700:3031::6815:134b
2606:4700:3036::ac43:b9a0

TXT 1

v=spf1 -all

NS 2

henry.ns.cloudflare.com
kristin.ns.cloudflare.com

SOA 1

henry.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (0)

None.

Subdomains (1)

www.numpy.org

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 numpy.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 536bf539-1d86-4d61-aef6-d6bd3cad2731
Output Hash: a29d5091bd4015d7793582c7290e242c0d516f10e0f229f74b5b5c70529ac20a
Signature: ed25519:54b35320804ceb4619d4a3b047f1d0c01dbb37d13a3f6f6941f4f4fd920d69203e2ac5dc1923b0a0933ba5ac91dd99f4e372f3a4fc21dfa1b8c1ea342981f200
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/numpy.org