SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
only1-kyoto.net
SSL/TLS Certificate
SSL/TLS Certificate for only1-kyoto.net
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- only1-kyoto.net
- Valid from
- Oct 17, 2026
- Valid until
- Jan 15, 2027 (86 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06DB51254C2B86C50431E70D379E8E7131CD
- SHA-256 fingerprint
- 49:43:50:76:8D:39:90:12:A7:AF:E9:38:9E:D3:29:FD:5A:32:F5:B1:A9:F5:E0:65:94:B9:75:63:00:A7:C5:08
- 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 Oct 21, 2026.
Never get surprised by only1-kyoto.net's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch only1-kyoto.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, 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.