mathem.se

Observed Aug 11, 2026, 06:21 UTC (4d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of mathem.se was taken 4d ago

mathem.se is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting mathem.se under watch moves it to the fast lane, where DomainDrift re-checks it about every 5 minutes and signs each reading, so a change becomes a dated event within minutes instead of waiting for the sweep to come round.

Watch mathem.se Watching a domain needs a DRM3 account. The reading above stays free and public either way.

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Up right now

Email byGoogle Workspace

Secured byLet's Encrypt

Registered withDomeneshop AS

Also usesMicrosoft 365LinearApple1PasswordAnthropicGoogle Search ConsoleGlobalSignWiz

tranco

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

INFRASTRUCTURE MAPwhat mathem.se actually stands on - every host below is a signed observation

mathem.se

A / AAAA

151.101.1.55151.101.65.55151.101.129.55151.101.193.55

unattributedserves the site

ns-cloud-d1.googledomains.comns-cloud-d2.googledomains.comns-cloud-d3.googledomains.comns-cloud-d4.googledomains.com

googledomains.comanswers its DNS

aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx2.googlemail.com+1 more

Google Workspacereceives its email

TLS

mathem.se

Let's Encryptissued its certificate

DNS Records

A 4

151.101.1.55
151.101.65.55
151.101.129.55
151.101.193.55

MX 5

1aspmx.l.google.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com
10aspmx2.googlemail.com
10aspmx3.googlemail.com

TXT 15

MS=ms79026487
linear-domain-verification=9698ijw4pfdx
apple-domain-verification= P0vI4HMsbeIUR8hn
1password-site-verification=52DAF32OB5D5VJLDWJBGFN3F5I
anthropic-domain-verification-jszzys=CTmaAdTDnHyq8OJ83GcXU6UK7
google-site-verification=3XC8q8itXwjl8iex-zjEs7tgUaYEPo1DkTPLFhNqrbM
google-site-verification=KPFmZoD8F0SZG6oXTXRW4vSoCTp_xlacxiKzvivCUjk
google-site-verification=XUlj2V7Wr1NkH2ioYGzB2Yxy-wJdHWw38Mgcvfihu-k
google-site-verification=Ys2l9Gx6l1r3vOcYj2YrE0gkWPTWaSxmD52GrEf8y34
google-site-verification=c5oBOGAj3Ev1LlynuBjNwIVEiK3tAXLdeLqDdmQqrCQ

NS 4

ns-cloud-d1.googledomains.com
ns-cloud-d2.googledomains.com
ns-cloud-d3.googledomains.com
ns-cloud-d4.googledomains.com

SOA 1

ns-cloud-d1.googledomains.com cloud-dns-hostmaster.google.com

DMARC_RECORDS 1

v=DMARC1; p=quarantine; rua=mailto:dmarc-reports@mathem.se; ruf=mailto:dmarc-reports@mathem.se; fo=1;

TLS Certificates (3)

Common Name	Issuer	Expires
`mathem.se`	C=US, O=Let's Encrypt, CN=YR1	Fri, 23 Oct 2026 09:37:51 +0000
`YR1`	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; the only network request the check makes is for the published public keys.

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Ed25519 Receipt

Receipt ID: rcpt_afa23969df60f6f8
Output Hash: 858657c88cddb561a8727618a9d62e7d5c7e459afaf04488e3201f779a84135b
Signature: ed25519:b7b7eec2f801af1212e828bb24da756356def2c5efe5304a9765aa3eebc676e76a762fb65c1040e6b1fdad10a52f90f79583f474610199b7f8981a5e79c89406
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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Permalink: https://domaindrift.io/t/mathem.se