SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
check-12.org
SSL/TLS Certificate
SSL/TLS Certificate for check-12.org
Valid- Issued by (CA)
- GoDaddy.com
- Subject
- check-12.org
- Valid from
- Mar 17, 2026
- Valid until
- Oct 1, 2026 (65 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 08B4C90147F790B4
- SHA-256 fingerprint
- BF:52:C0:4B:73:3A:F9:1B:DB:52:6C:56:C4:89:1F:D5:97:8C:EC:EF:70:DC:18:58:1A:20:B9:EA:E2:99:0E:EF
- Chain
- GoDaddy TLS Intermediate CA DV - R1v1 → GoDaddy TLS Root CA - R1 → Go Daddy Root Certificate Authority - G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by check-12.org's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch check-12.org 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.
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