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 my-surfer.net

Valid
Issued by (CA)
Let's Encrypt
Subject
my-surfer.net
Valid from
Aug 23, 2026
Valid until
Nov 21, 2026 (88 days remaining)
Public key
RSA 2048-bit
Serial
05F28B843401E23E15F747F03E9A94CF3F46
SHA-256 fingerprint
2B:B5:E6:8D:91:8F:89:89:B0:1C:9E:DD:4B:28:3D:2C:A8:42:09:6E:25:7A:17:C7:FE:8C:D1:A2:0D:73:60:37
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
my-surfer.net, www.my-surfer.net

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

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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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