SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
pta123.com
SSL/TLS Certificate
SSL/TLS Certificate for pta123.com
Self-signed- Issued by (CA)
- Windstream
- Subject
- Web Server
- Valid from
- May 11, 2017
- Valid until
- Mar 24, 2217 (69566 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 1F6D81C1
- SHA-256 fingerprint
- 55:56:54:2C:30:00:A4:F5:5F:8C:0C:E5:48:6B:E1:3A:FF:7A:EC:CF:06:48:07:D1:C4:7A:81:35:90:A6:0F:29
- Chain
- Web Server
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 Oct 2, 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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