SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bt-midland.com
SSL/TLS Certificate
SSL/TLS Certificate for bt-midland.com
Self-signed- Issued by (CA)
- Your Company
- Subject
- self-sign.com
- Valid from
- Oct 3, 2026
- Valid until
- Sep 30, 2036 (3633 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 166874B57BEC161116D4BC178483BE4164C97584
- SHA-256 fingerprint
- FD:03:A4:70:4B:A9:D1:9D:5A:6F:C7:76:40:BD:3F:03:31:B5:CA:07:19:E1:66:DA:F7:E1:76:8D:A0:63:68:37
- Chain
- self-sign.com
Certificate Authority Authorization (CAA)
CAA restricts issuance to letsencrypt.org, sectigo.com; we couldn't map the serving CA (Your Company) to one of these identifiers.
This certificate has been served since Sep 30, 2026.
Never get surprised by bt-midland.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch bt-midland.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, CNAME, TXT 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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