SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
borup-it.dk
SSL/TLS Certificate
SSL/TLS Certificate for borup-it.dk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- *.borup-it.dk
- Valid from
- Aug 15, 2026
- Valid until
- Nov 13, 2026 (56 days remaining)
- Public key
- EC 256-bit
- Serial
- 05A5A8FE3BF73E8D02E478824B1D09EA2AD6
- SHA-256 fingerprint
- 98:10:C1:9A:0E:EE:4D:AF:C4:98:03:0B:CF:21:3B:4A:FD:AE:19:D5:50:2A:44:A8:0D:E9:7F:9C:04:81:A8:04
- Chain
- YE2 → Root YE → ISRG Root X2 → ISRG Root X1
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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