SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
pre-spec.com
SSL/TLS Certificate
SSL/TLS Certificate for pre-spec.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- *.pre-spec.com
- Valid from
- Jun 17, 2026
- Valid until
- Sep 15, 2026 (54 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 067226689844C095E97FAC031F5D6D8B26AD
- SHA-256 fingerprint
- AA:B9:31:F9:61:17:F7:DB:C5:EA:4E:9D:5E:47:12:81:5D:EC:67:1C:F4:8F:C9:4C:2F:AF:0E:80:56:69:95:46
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by pre-spec.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch pre-spec.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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