nsf.org

Observed 2026-07-14T15:04:27.346Z (21h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byMicrosoft 365

Also usesFacebook/MetaGoogle Search ConsoleDocuSign

tranco_40k

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

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

nsf.org

A / AAAA

52.191.90.193

Cloudflareserves the site

ns-950.awsdns-54.netns-1781.awsdns-30.co.ukns-263.awsdns-32.comns-1155.awsdns-16.org

awsdns-54.net + awsdns-30.co.uk + moreanswers its DNS

nsf-org.mail.protection.outlook.com

Microsoft 365receives its email

HTTPS probe

redirect Redirecting (3xx) 308 → https://www.nsf.org

HTTP status308

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time266 ms

DNS resolutionNOERROR

Redirect chain

https://www.nsf.org

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

DNS Records

A 1

52.191.90.193

MX 1

5nsf-org.mail.protection.outlook.com

TXT 45

v=spf1 include:spf.nsf.org include:_spf.google.com include:spf.protection.outlook.com include:cust-spf.exacttarget.com include:amazonses.com include:app.sgizmo.com -all
jc6koiadq6c78a8cpfohrl467v
smartsheet-site-validation=DYk5QZldvWM5v01o358AYWqFZVZ1acSS
1q49kqja4am9kgupqfo060qmcs
Dynatrace-site-verification=1a13a8eb-fcb6-4e87-bf83-27e401695586__d30facs156bcmse6bfcmhe972r
apple-domain-verification=ejgzqL39FqKVXGGH
5c6khu6j17dn222bmgfsvmttc3
7b5leh2edjld7c9i456263sefh
ndO7VtEdqTir+XPYpzN/wdry8O/+MwA/g1P87dmcsBtUOIwGldqpJPyPitUhbFNhDZcLy6K+7rPowA0PXcMBtA==
autodesk-domain-verification=ZCKDKFc4dgit10Uq-txa

NS 4

ns-950.awsdns-54.net
ns-1781.awsdns-30.co.uk
ns-263.awsdns-32.com
ns-1155.awsdns-16.org

SOA 1

ns-1155.awsdns-16.org awsdns-hostmaster.amazon.com

TLS Certificates (0)

None.

Subdomains (10)

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

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

Ed25519 Receipt

Receipt ID: fb7e14fc-f797-4814-bfc4-2850c726440c
Output Hash: 13c8cf518068a2ecda5bad6ec9d60f31cc2f1fe9cbf3098e958ab6d42d87bf9e
Signature: ed25519:025ffb8d39523109846eef65b1551ed28c3b591d55fbe1507175ee25d07a37802d12433baae194efd38663875d68697c7425b5539dfc6f96ffa1853967bb0101
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

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