SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
plenigo-mail.com
SSL/TLS Certificate
SSL/TLS Certificate for plenigo-mail.com
Hostname mismatch- Issued by (CA)
- Sectigo Limited
- Subject
- *.plenigo.com
- Valid from
- Jul 1, 2026
- Valid until
- Jan 15, 2027 (66 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 99DA94B5037142498D98765578FE82CD
- SHA-256 fingerprint
- 0E:B6:B2:A8:20:3B:98:61:98:4C:D8:2D:8C:5C:91:DC:06:8A:FE:A9:81:3B:3D:BF:D3:C0:F4:0B:E6:47:7B:8B
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by plenigo-mail.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch plenigo-mail.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.