SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sytex.co.uk
SSL/TLS Certificate
SSL/TLS Certificate for sytex.co.uk
Self-signed- Issued by (CA)
- uk607.directrouter.com
- Subject
- uk607.directrouter.com
- Valid from
- Aug 23, 2023
- Valid until
- Aug 22, 2024 (expired 751 days ago)
- Public key
- RSA 4096-bit
- Serial
- 0B70C130E3D8C015EBF372ED324C56167D08A672
- SHA-256 fingerprint
- DD:43:4B:AF:28:51:AA:14:55:E6:2C:6C:02:19:8D:B6:10:5A:F4:57:79:C8:A8:8F:36:B1:21:8D:22:24:05:FC
- Chain
- uk607.directrouter.com
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Aug 21, 2026.
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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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