SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
weresch.net
SSL/TLS Certificate
SSL/TLS Certificate for weresch.net
Hostname mismatch- Issued by (CA)
- Sectigo Limited
- Subject
- *.github.com
- Valid from
- Jun 12, 2026
- Valid until
- Sep 9, 2026 (49 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 1398D858E835C77C53CB931B15B43F67
- SHA-256 fingerprint
- 6D:95:6F:11:11:0A:05:ED:94:8A:D1:FE:93:25:E8:9D:70:72:09:FD:0D:BC:53:00:E9:3D:93:8F:66:55:C4:F4
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
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 Jul 21, 2026.
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Uptime
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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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