SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
a-tek.co.uk
SSL/TLS Certificate
SSL/TLS Certificate for a-tek.co.uk
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.a-tek.co.uk
- Valid from
- Sep 13, 2026
- Valid until
- Mar 26, 2027 (183 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 2E65824FBDC16C87050CCC8B661493D1
- SHA-256 fingerprint
- D5:11:23:57:ED:94:06:EF:BC:FF:8F:C2:D9:25:FE:8F:16:E3:83:1D:AB:AA:5A:70:E2:66:0C:1E:C7:88:5F:94
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by a-tek.co.uk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch a-tek.co.uk 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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