SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sema-4.com
SSL/TLS Certificate
SSL/TLS Certificate for sema-4.com
Valid- Issued by (CA)
- GoDaddy.com, Inc.
- Subject
- sema-4.com
- Valid from
- Apr 9, 2026
- Valid until
- Oct 24, 2026 (38 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 223C30EF45F5D386
- SHA-256 fingerprint
- B1:D6:04:ED:8C:9A:D5:2D:63:85:A2:C6:EA:87:98:A9:2A:E9:33:B9:7D:99:CB:FB:B5:9E:A8:22:03:B1:2B:8E
- Chain
- Go Daddy Secure Certificate Authority - G2 → Go Daddy Root Certificate Authority - G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by sema-4.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch sema-4.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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