norvig.com

Observed Jul 24, 2026, 02:03 UTC (21m 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

Secured byLet's Encrypt

tranco_100k

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

INFRASTRUCTURE MAPwhat norvig.com actually stands on - every host below is a signed observation

norvig.com

A / AAAA

158.106.138.13

unattributedserves the site

cp2.privatesystems.netcp4.privatesystems.netcp3.privatesystems.netcp1.privatesystems.net

privatesystems.netanswers its DNS

norvig.com

norvig.comreceives its email

TLS

norvig.com

Let's Encryptissued its certificate

DNS Records

A 1

158.106.138.13

MX 1

0norvig.com

TXT 2

v=spf1 +mx +a +ip4:158.106.138.13 ~all
v=DMARC1;p=none;sp=none;adkim=r;aspf=r;pct=100;fo=0;rf=afrf;ri=86400;rua=mailto:peter@norvig.com;ruf=mailto:peter@norvig.com

NS 4

cp2.privatesystems.net
cp4.privatesystems.net
cp3.privatesystems.net
cp1.privatesystems.net

SOA 1

cp1.privatesystems.net noc.privatesystems.net

SRV 1

cpanelemaildiscovery.cpanel.net:443 p0

TLS Certificates (3)

Common Name	Issuer	Expires
`norvig.com`	C=US, O=Let's Encrypt, CN=YR2	Tue, 01 Sep 2026 15:18:33 +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 norvig.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_47f3c04be91e11b1
Output Hash: 536df26c500616cb6b48d0dfbc3d4e359e54bb1f9d16cbe2a320153189c1091b
Signature: ed25519:95e5db0302835b3c888c3887b55192cb6e11c065a7d8abc11e1c98aad786f3619cd33bd4c3d6d239bc4fa47ddf8e056b91c57371bb76052e942a37bd1dd2e303
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/norvig.com