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 pekoe.io
Self-signed- Issued by (CA)
- letsencrypt-nginx-proxy-companion
- Subject
- letsencrypt-nginx-proxy-companion
- Valid from
- Mar 15, 2026
- Valid until
- Mar 15, 2027 (222 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 2D49454053886B93D88A861DEEFBE1CB1DD8452D
- SHA-256 fingerprint
- DD:97:92:62:61:62:04:88:2F:34:C9:F1:F1:44:58:0E:77:3D:3A:B6:C9:0A:12:25:FB:5A:5B:EA:91:D7:9A:62
- Chain
- letsencrypt-nginx-proxy-companion
Certificate Authority Authorization (CAA)
CAA restricts issuance to letsencrypt.org; we couldn't map the serving CA (letsencrypt-nginx-proxy-companion) to one of these identifiers.
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TLS certificate
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