wikibooks.org
Observed Jul 21, 2026, 20:06 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.
Up right now
Runs onWikimedia Foundation
Secured byLet's Encrypt
Registered withMarkMonitor Inc.
Also usesGoogle Search Console
IPv6 · tranco_5k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat wikibooks.org actually stands on - every host below is a signed observation
wikibooks.org
A / AAAA
208.80.154.2242620:0:861:ed1a::1
Wikimedia Foundationserves the site
NS
ns0.wikimedia.orgns1.wikimedia.orgns2.wikimedia.org
wikimedia.organswers its DNS
MX
mx-in1001.wikimedia.orgmx-in2001.wikimedia.org
wikimedia.orgreceives its email
TLS
*.wikipedia.org
Let's Encryptissued its certificate
DNS Records
A 1
208.80.154.224
AAAA 1
2620:0:861:ed1a::1
MX 2
10mx-in1001.wikimedia.org10mx-in2001.wikimedia.org
TXT 3
v=spf1 include:wikimedia.org ~allgoogle-site-verification=djm1t6aP_Yt6WNSj834eVqD83qomWtLP0_1NveYTBfUv=DMARC1; p=reject; rua=mailto:dmarc-rua@wikimedia.org;
NS 3
ns0.wikimedia.orgns1.wikimedia.orgns2.wikimedia.org
SOA 1
ns0.wikimedia.org hostmaster.wikimedia.org
CAA 3
iodef "mailto:dns-admin@wikimedia.org"issue "letsencrypt.org"issue "pki.goog"
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
*.wikipedia.org |
C=US, O=Let's Encrypt, CN=YE1 | Fri, 04 Sep 2026 20:06:43 +0000 |
YE1 |
C=US, O=ISRG, CN=Root YE | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YE |
C=US, O=Internet Security Research Group, CN=ISRG Root X2 | Thu, 02 Sep 2032 23:59:59 +0000 |
ISRG Root X2 |
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 receiptEd25519 Receipt
- Receipt ID
rcpt_9eb5eb3070e6365a- Output Hash
ac7314c2cd171332949d256048f9b793d7d32f50b1deaa56abdd6f8b7050e826- Signature
ed25519:7944fb1ec46c72159d3870654e9f2a75ee7ae277615b67add34f5011aa91628310f355fed14f17e94ad4766b74318fd0f001f8dda0d836dbd572c852e6cd5407- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast