SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
so-sen.net
SSL/TLS Certificate
SSL/TLS Certificate for so-sen.net
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- so-sen.net
- Valid from
- Jun 26, 2026
- Valid until
- Sep 24, 2026 (49 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05187EEB5CE84A984AA5BEFC18528052555A
- SHA-256 fingerprint
- 15:B7:0D:11:83:21:26:8D:24:24:1A:49:3A:17:DF:26:43:3B:4E:64:1B:E3:72:37:B1:AD:CE:FA:5A:43:F1:3A
- 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.
Never get surprised by so-sen.net's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch so-sen.net 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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