spec.org

Observed 2026-07-15T05:45:26.515Z (4h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byGoogle (SPF sender)

7 subdomains · tranco_5k

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

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

spec.org

A / AAAA

38.146.202.4

Cloudflareserves the site

ns1.headgear.orgpro.spec.orgns2.headgear.orgspec.cs.miami.edu

headgear.org + spec.org + moreanswers its DNS

pro.spec.org

Google (SPF sender)receives its email

HTTPS probe

ok Responding normally (2xx) 200 OK

HTTP status200

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time320 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 1

38.146.202.4

MX 1

10pro.spec.org

TXT 2

v=spf1 ip4:38.146.202.0/26 include:_spf.google.com -all
v=DMARC1; p=none;

NS 4

ns1.headgear.org
pro.spec.org
ns2.headgear.org
spec.cs.miami.edu

SOA 1

pro.spec.org root.pro.spec.org

TLS Certificates (0)

None.

Subdomains (7)

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

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

Ed25519 Receipt

Receipt ID: c3c9fc6f-9c60-420f-834b-3928e76d5ce2
Output Hash: f87a344949a6f2f4359b5185afd5d310c88974847c1f004ad127e0fd911c09c9
Signature: ed25519:0b197968601816d487b0fde5fe1d17a16675111c9fcf6ee9801b2c9c31a4ec3882b346cbeef1c3046710a1f0ffe6ec74801cbca9c9751cfbe83f036875d4190f
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

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