availabilitycalendar.com
Observed Aug 10, 2026, 03:19 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 byZendesk
Secured byGoogle Trust Services
Registered withHosting Concepts B.V. d/b/a Registrar.eu
Also usesGoogle Search Console
DNSSEC on · IPv6 · majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat availabilitycalendar.com actually stands on - every host below is a signed observation
availabilitycalendar.com
A / AAAA
104.26.14.45104.26.15.45172.67.68.1882606:4700:20::681a:e2d+2 more
Cloudflareserves the site
NS
drew.ns.cloudflare.comzita.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
route2.mx.cloudflare.netroute3.mx.cloudflare.netroute1.mx.cloudflare.net
Zendeskreceives its email
TLS
availabilitycalendar.com
Google Trust Servicesissued its certificate
DNS Records
A 3
104.26.14.45104.26.15.45172.67.68.188
AAAA 3
2606:4700:20::681a:e2d2606:4700:20::681a:f2d2606:4700:20::ac43:44bc
MX 3
68route2.mx.cloudflare.net68route3.mx.cloudflare.net69route1.mx.cloudflare.net
TXT 3
Sendinblue-code:fdaf1534931a3281403a9e07ef72fb72google-site-verification=1cZyIq7PI-AF4o86y4GevnzpB-W2IqT4-etHQIEyqZQv=spf1 include:mxsspf.sendpulse.com include:mxsmtp.sendpulse.com include:_spf.mx.cloudflare.net include:mail.zendesk.com -all
NS 2
drew.ns.cloudflare.comzita.ns.cloudflare.com
SOA 1
drew.ns.cloudflare.com dns.cloudflare.com
DMARC_RECORDS 1
v=DMARC1; p=none; rua=mailto:548ca108a7754e79828079c2193bf17b@dmarc-reports.cloudflare.net;
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
availabilitycalendar.com |
C=US, O=Google Trust Services, CN=WE1 | Wed, 14 Oct 2026 11:47:34 +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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_576116536c3ce1cc- Output Hash
e3f11ce8e3ce5cec8bfe088765c661c15c3cde767b7f521e55bc75dc152f0ba9- Signature
ed25519:bb66108b19ed88833483e65e67220323c19700f7957e68743ed8e7ff4da17e7e49073fcc7d5d9a4c01ba972c40d337cdc2135d5c6955cdb530e15811a158c40f- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast