SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
tns-sensor.com
SSL/TLS Certificate
SSL/TLS Certificate for tns-sensor.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- *.tekomek.com
- Valid from
- Oct 21, 2026
- Valid until
- Jan 19, 2027 (76 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05B1FB33CE5F3565DC5D37285E3175981730
- SHA-256 fingerprint
- 66:67:C8:91:7F:F4:43:87:79:74:0A:46:D3:A5:82:5C:56:7F:05:49:63:C2:AA:DB:6E:72:45:4F:52:2B:6B:C5
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Aug 22, 2026.
Never get surprised by tns-sensor.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch tns-sensor.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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