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 ptd.dk
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- web02.onwelcom.dk
- Valid from
- Jun 29, 2026
- Valid until
- Sep 27, 2026 (67 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0534F0C54F5C48A7DB63C689402627635031
- SHA-256 fingerprint
- 2B:65:8D:22:1F:72:10:1B:95:44:D5:EB:88:3E:F8:66:B6:E1:AE:B2:A0:2B:BF:B1:E0:01:7E:1B:EF:BA:98:65
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.