SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for awaseb.dev

Hostname mismatch
Issued by (CA)
Certainly
Subject
t.sni-820-default.ssl.fastly.net
Valid from
Oct 9, 2026
Valid until
Nov 8, 2026 (29 days remaining)
Public key
RSA 2048-bit
Serial
78C41C3F0CD4C2A713A7DE7C2A54A170E0FA
SHA-256 fingerprint
26:7B:C6:BE:42:87:84:5D:DB:3D:62:A9:F2:7E:DA:FF:C3:B2:71:85:FD:50:CD:4A:57:D1:29:23:0C:CB:A1:1F
Chain
Certainly Intermediate R1 → Starfield Root Certificate Authority - G2
Subject Alternative Names (1)
t.sni-820-default.ssl.fastly.net

Certificate Authority Authorization (CAA)

CAA restricts issuance to certainly.com; we couldn't map the serving CA (Certainly) to one of these identifiers.

This certificate has been served since Oct 6, 2026.

Never get surprised by awaseb.dev's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch awaseb.dev continuously, notifying you the moment anything moves across all three signals:

Uptime

We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.

DNS changes

We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.

TLS certificate

We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.