norvig.com

Observed Jul 21, 2026, 17:34 UTC (2d 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

cp1.privatesystems.netcp4.privatesystems.netcp2.privatesystems.netcp3.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

cp1.privatesystems.net
cp4.privatesystems.net
cp2.privatesystems.net
cp3.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_997e434e0ed2f066
Output Hash: 89681d699b2cbafee4a99bc48c492f0fcd4ff7b1b98d8cd76c6c8bc8ea55b9d6
Signature: ed25519:a0241bb08a0e3b752fd5438d5a7e557e68c4dfe9a7b58838d636f13656e8de53ec161d1099723af4100f3b4986f1793ba7df841ee5663f87390716f6f801c002
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

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