nsf.org

Observed Jul 24, 2026, 03:22 UTC (11h 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.

Verify this receipt yourself + Watch this domain

Up right now

Runs onCloudflare

Email byMicrosoft 365

Secured byLet's Encrypt

Also usesDocuSignFacebook/MetaGoogle Search Console

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-1155.awsdns-16.orgns-1781.awsdns-30.co.ukns-263.awsdns-32.comns-950.awsdns-54.net

awsdns-16.org + awsdns-30.co.uk + moreanswers its DNS

nsf-org.mail.protection.outlook.com

Microsoft 365receives its email

TLS

nsf.org

Let's Encryptissued its certificate

DNS Records

A 1

52.191.90.193

MX 1

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

TXT 45

1q49kqja4am9kgupqfo060qmcs
387jmbgjbgcv5n86ndh8e49jg2
3rg3mbi7qsn9ev1pthp91j4405
434efdpcrkhm5u5sl3fk4krb3t
5c6khu6j17dn222bmgfsvmttc3
7b5leh2edjld7c9i456263sefh
AV6siBnUL8hEs4cYhMpoDmSOjc6BP/3BSSgryG/Inq3E8MbdMnh8sm8hA9NMowa9DuxCj6glwmY+ZcdRPnLNDA==
Dynatrace-site-verification=1a13a8eb-fcb6-4e87-bf83-27e401695586__d30facs156bcmse6bfcmhe972r
Dynatrace-site-verification=2a02c0c1-1757-479e-afae-2721d281ea3b__l3r442j0dep4nigp8on3v1ru13
MS=ms48901080

NS 4

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

SOA 1

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

TLS Certificates (3)

Common Name	Issuer	Expires
`nsf.org`	C=US, O=Let's Encrypt, CN=YR2	Sat, 26 Sep 2026 12:29:34 +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 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: rcpt_79963ef1070ae9b9
Output Hash: 53ea0a6a38ca9374e4b0ce90a0aeb5d38ea9d20f639770e2c8a171c43c5a9465
Signature: ed25519:833b71532a2dc4de69f70140feaf193ef61f6431a07854d67bc7ff0f59ccd133cd9d6a2cd5ee86de275e584cc589403e0e2eccd7630792c5ff58aeea5d22a10a
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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