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 a-f.com.sg

Expired
Issued by (CA)
Let's Encrypt
Subject
a-f.com.sg
Valid from
Nov 1, 2025
Valid until
Jan 30, 2026 (expired 276 days ago)
Public key
RSA 2048-bit
Serial
0554E93015EA9D9127B811A17AC9B33B0F1F
SHA-256 fingerprint
44:16:B9:6C:B7:05:CC:14:85:63:8D:13:FB:90:F6:1E:37:1B:C7:A4:9E:53:12:BD:81:A1:C0:A5:60:B0:A9:CB
Chain
R13 → ISRG Root X1
Subject Alternative Names (3)
a-f.com.sg, webmail.a-f.com.sg, www.a-f.com.sg

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 23, 2026.

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TLS certificate

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