SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
h2-tec.com
SSL/TLS Certificate
SSL/TLS Certificate for h2-tec.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- h2-tec.com
- Valid from
- Aug 13, 2026
- Valid until
- Nov 11, 2026 (36 days remaining)
- Public key
- EC 256-bit
- Serial
- 0563F84CC42AF9175685D304302E1C251790
- SHA-256 fingerprint
- 7B:CB:65:EF:E3:33:BE:D7:9A:E0:A2:6E:C1:D9:09:73:2B:36:23:10:85:49:6A:A3:4F:67:7F:FE:CA:12:D3:4E
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Sep 12, 2026.
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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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