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-dim.com

Valid
Issued by (CA)
Let's Encrypt
Subject
a-dim.com
Valid from
Jun 18, 2026
Valid until
Sep 16, 2026 (36 days remaining)
Public key
EC 256-bit
Serial
055ADA05601AEF336BF9CB2BCE06AFCC3283
SHA-256 fingerprint
9C:A1:5F:91:51:DB:04:AA:A0:49:56:E2:15:A6:B5:88:13:61:33:EE:8C:B0:6A:CF:96:FF:2E:DF:32:BE:41:8A
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (1)
a-dim.com

Certificate Authority Authorization (CAA)

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

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Uptime

We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.

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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