altabooks.com.br
Observed Jul 27, 2026, 18:23 UTC (16h 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 onCloudflare
Email byGoogle Workspace
Secured byGoogle Trust Services
IPv6 · majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat altabooks.com.br actually stands on - every host below is a signed observation
altabooks.com.br
A / AAAA
172.67.158.154104.21.14.962606:4700:3032::ac43:9e9a2606:4700:3031::6815:e60
Cloudflareserves the site
NS
luke.ns.cloudflare.comtori.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
altabooks.com.br
Google Trust Servicesissued its certificate
DNS Records
A 2
172.67.158.154104.21.14.96
AAAA 2
2606:4700:3032::ac43:9e9a2606:4700:3031::6815:e60
MX 5
1aspmx.l.google.com10alt3.aspmx.l.google.com10alt4.aspmx.l.google.com5alt1.aspmx.l.google.com5alt2.aspmx.l.google.com
TXT 2
v=spf1 include:_spf.google.com include:_spf.rdstation.com.br include:sendgrid.net ~allv=DMARC1; p=none; rua=mailto:dmarc@altabooks.com.br; ruf=mailto:dmarc@altabooks.com.br; rf=afrf; pct=100
NS 2
luke.ns.cloudflare.comtori.ns.cloudflare.com
SOA 1
luke.ns.cloudflare.com dns.cloudflare.com
CAA 12
issue "comodoca.com"issue "digicert.com; cansignhttpexchanges=yes"issue "globalsign.com"issue "letsencrypt.org"issue "pki.goog; cansignhttpexchanges=yes"issue "ssl.com"issuewild "comodoca.com"issuewild "digicert.com; cansignhttpexchanges=yes"issuewild "globalsign.com"issuewild "letsencrypt.org"
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
altabooks.com.br |
C=US, O=Google Trust Services, CN=WE1 | Wed, 07 Oct 2026 16:16:37 +0000 |
WE1 |
C=US, O=Google Trust Services LLC, CN=GTS Root R4 | Tue, 20 Feb 2029 14:00:00 +0000 |
GTS Root R4 |
C=BE, O=GlobalSign nv-sa, 2.5.4.11=Root CA, CN=GlobalSign Root CA | Fri, 28 Jan 2028 00:00:42 +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_0642458939cf9bfa- Output Hash
e73cc60cb9cb1c0fe84e84d3c694e0d55de86507794c9f9dea786af2c696fdd4- Signature
ed25519:b691143362840c46a017de85913cc640cfdf1607551085a459c9a57a4eef681a591320ccc573556fd6e06513b7aa904fa6cac2e1fa9f7add3222e08e4a4c4605- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast