bookstr.com
Observed Aug 16, 2026, 09:19 UTC (11h 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 onGoogle
GoogleEmail byGoogle Workspace
Google WorkspaceSecured byLet's Encrypt
Let's EncryptRegistered withGoDaddy.com, LLC
Also usesFacebook/MetaGoogle Search Console
Facebook/Meta
Google Search Console1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat bookstr.com actually stands on - every host below is a signed observation
bookstr.com
A / AAAA
35.212.85.28
Googleserves the site
NS
coby.ns.cloudflare.comkhloe.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comalt1.aspmx.l.google.com+1 more
Google Workspacereceives its email
TLS
bookstr.com
Let's Encryptissued its certificate
DNS Records
A 1
35.212.85.28
MX 5
1aspmx.l.google.com10alt3.aspmx.l.google.com10alt4.aspmx.l.google.com5alt1.aspmx.l.google.com5alt2.aspmx.l.google.com
TXT 7
brevo-code:7467d4b41f843a7b410588b899413884facebook-domain-verification=2pgozd987m7t77esf8pah1hfpmqfnrgoogle-site-verification=JLKPaPPhpFmx1x6CgUFnFotBQDvQUHlYDYHuTnkmqqwgoogle-site-verification=aanmidMsN4lUqaWWs-W0CvqdRIoKUex84K82oEs_BP0google-site-verification=v9VdopBecR_5tYqnh3JQasIkOmdKgy3_Bop-CFmQZu4v=spf1 include:_spf.google.com ~allv=spf1 include:servers.mcsv.net ?all
NS 2
coby.ns.cloudflare.comkhloe.ns.cloudflare.com
SOA 1
coby.ns.cloudflare.com dns.cloudflare.com
DMARC_RECORDS 1
v=DMARC1; p=none; rua=mailto:support@bookstr.com; ruf=mailto:support@bookstr.com; adkim=r; aspf=r; pct=100; rf=afrf; ri=86400; sp=none
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
bookstr.com |
C=US, O=Let's Encrypt, CN=YR1 | Sun, 08 Nov 2026 03:43:00 +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 (1)
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.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_6f1a298eacd65ed1- Output Hash
18d7c2fe880501d5ee05d01a6ab10f09392644f4c2ce67d84ee54e136bceaf10- Signature
ed25519:af589a6585eafad1ae764d938fb847a2f9b2f365d6118cb2ddd80fc245b0537cfc8a1598fbcc6afcf8144b9b07252c79de82bc3119706b2d7f6ba472d3ead901- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast