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 on-g.com
Valid- Issued by (CA)
- GoDaddy.com
- Subject
- on-g.com
- Valid from
- May 31, 2026
- Valid until
- Dec 15, 2026 (137 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 439CDDB3713BB59B
- SHA-256 fingerprint
- 73:9F:3D:18:5A:BC:9B:7A:60:03:06:64:ED:C1:72:C5:A9:C9:76:4E:F6:64:D1:D4:DD:54:79:73:13:39:C3:E0
- 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 on-g.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch on-g.com 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.