alibris.com
Observed 2026-07-12T09:26:22.639Z (19h ago). Every field below was attested with an Ed25519 signature at scan time.
Up right now
Runs onCloudflare
Email bySendGrid
Registered withGoDaddy.com, LLC
Also usesGoogle Search Console
9 subdomains · tranco_40k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat alibris.com actually stands on - every host below is a signed observation
alibris.com
A / AAAA
104.18.153.95104.18.152.95
Cloudflareserves the site
NS
ns5.alibris.comns4.alibris.com
alibris.comanswers its DNS
MX
mx2-us1.ppe-hosted.commx1-us1.ppe-hosted.com
SendGridreceives its email
HTTPS probe
redirect
Redirecting (3xx) 301 → https://www.alibris.com/
HTTP status301
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time8 ms
DNS resolutionNOERROR
Redirect chain
https://www.alibris.com/Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".
DNS Records
A 2
104.18.153.95104.18.152.95
MX 2
20mx2-us1.ppe-hosted.com10mx1-us1.ppe-hosted.com
TXT 9
duo_sso_verification=GvMMzucxDXKoSwSJfA9qYhy63yAZcgJu1fe7YqMGe5BqvY8dklnSnpRGXPnp5G4Jms-domain-verification=7e0288d9-64a0-401a-a690-29092b12aa06google-site-verification=nZ6KPbX6L6enpA9mODgHjQwlHpaJIizGu2lQDpiU9Rgv=spf1 a:mailhost2.alibris.com a:mailhost.alibris.com include:authsmtp.com include:_spf.zdsys.com include:mail.zendesk.com include:sendgrid.net include:spf.protection.outlook.com a:dispatch-us.ppe-hosted.com -allanthropic-domain-verification-hdvgzn=LVX0fAGZTiC5hndqsXSOwppGEMS=3BFB65151236B89414DE0F8A38E4633CC7697357sophos-domain-verification=18def0916d08e6e42418d8e9ece43208abafe15570e937d726a90707a045d9adv=DMARC1; p=reject; rua=mailto:postmaster@alibris.com; ruf=mailto:postmaster@alibris.com; fo=1v=DNSSEC1; (detected)
NS 2
ns5.alibris.comns4.alibris.com
SOA 1
ns4.alibris.com dns.cloudflare.com
CAA 11
issuewild digicert.com; cansignhttpexchanges=yesissue letsencrypt.orgissue godaddy.comissuewild comodoca.comissue ssl.comissuewild ssl.comissuewild letsencrypt.orgissuewild pki.goog; cansignhttpexchanges=yesissue pki.goog; cansignhttpexchanges=yesissue comodoca.com
TLS Certificates (0)
None.
Subdomains (9)
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
ae96bb79-3d55-4f4f-aedb-8650978e31a4- Output Hash
c336e22fcb9228b29f4340ef6e0b2519a527200968d8e0f84d2b6aa5cbfb3b90- Signature
ed25519:61b722df13053f08af4e504247312e8f4dc97984f0eac59894f871bb7289388bda4b3310a6613a82a6388c38c3cdf64688b75bbebc5eb7bc9a28aad7536cca06- Public Key
ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b- Parent
(genesis)- Plane
- fast