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 buildem.com

Untrusted chain
Issued by (CA)
Let's Encrypt
Subject
buildem.com
Valid from
Jun 12, 2026
Valid until
Sep 10, 2026 (38 days remaining)
Public key
RSA 2048-bit
Serial
056B86E0D4C7606F7DB5EE383ACAD2A883CE
SHA-256 fingerprint
00:DC:EA:FE:32:BE:C0:2A:DA:10:01:F4:55:FD:6B:2E:26:BC:1D:C2:2B:73:E6:93:4C:6B:70:A8:4A:95:DE:67
Chain
YR1
Subject Alternative Names (2)
*.buildem.com, buildem.com

Certificate Authority Authorization (CAA)

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

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This is today's certificate. Turn on monitoring and we'll watch buildem.com continuously, notifying you the moment anything moves across all three signals:

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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