xkcd.com
Observed Jul 21, 2026, 20:07 UTC (1d 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.
Up right now
Email byGoogle Workspace
Secured byGlobalSign
Registered withGoDaddy.com, LLC
IPv6 · tranco_5k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat xkcd.com actually stands on - every host below is a signed observation
xkcd.com
A / AAAA
151.101.64.67151.101.192.67151.101.128.67151.101.0.67+4 more
2a04serves the site
NS
ns-cloud-d3.googledomains.comns-cloud-d2.googledomains.comns-cloud-d4.googledomains.comns-cloud-d1.googledomains.com
googledomains.comanswers its DNS
MX
alt2.aspmx.l.google.comaspmx2.googlemail.comaspmx4.googlemail.comaspmx.l.google.com+3 more
Google Workspacereceives its email
TLS
xkcd.com
GlobalSign nv-saissued its certificate
DNS Records
A 4
151.101.64.67151.101.192.67151.101.128.67151.101.0.67
AAAA 4
2a04:4e42::672a04:4e42:400::672a04:4e42:600::672a04:4e42:200::67
MX 7
20alt2.aspmx.l.google.com30aspmx2.googlemail.com30aspmx4.googlemail.com10aspmx.l.google.com30aspmx5.googlemail.com30aspmx3.googlemail.com20alt1.aspmx.l.google.com
TXT 2
v=spf1 include:_spf.google.com include:mailgun.org ~allv=DMARC1; p=none; rua=mailto:dmarc_reports@xkcd.com; ruf=mailto:dmarc_reports@xkcd.com; fo=1; adkim=s; aspf=s;
NS 4
ns-cloud-d3.googledomains.comns-cloud-d2.googledomains.comns-cloud-d4.googledomains.comns-cloud-d1.googledomains.com
SOA 1
ns-cloud-d1.googledomains.com cloud-dns-hostmaster.google.com
CAA 3
issue "globalsign.com"issuewild "globalsign.com"issue "letsencrypt.org"
TLS Certificates (2)
| Common Name | Issuer | Expires |
|---|---|---|
xkcd.com |
C=BE, O=GlobalSign nv-sa, CN=GlobalSign Atlas R3 DV TLS CA 2025 Q4 | Sat, 09 Jan 2027 22:00:18 +0000 |
GlobalSign Atlas R3 DV TLS CA 2025 Q4 |
2.5.4.11=GlobalSign Root CA - R3, O=GlobalSign, CN=GlobalSign | Fri, 16 Jul 2027 00:00:00 +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 receiptEd25519 Receipt
- Receipt ID
rcpt_9bf925d531f9a1d9- Output Hash
b61d5342f5315c8723f5f4889c6a3f8f9c43def227efa1a6dca93ede0799fd51- Signature
ed25519:f1c2b4ab705038b83a00fc8991967bbf62ef9c50e59e59a5acca6ce16256f7f6ce515ac4df7057aa128abef346f0b54da7f238b5cf1ba1fdefc6860ffd18d70f- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast