SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
rikkyo-dormitory.com
SSL/TLS Certificate
SSL/TLS Certificate for rikkyo-dormitory.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- rikkyo-dormitory.com
- Valid from
- Sep 29, 2026
- Valid until
- Dec 28, 2026 (89 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 061FD3A22889B8F349466F46F6580223B148
- SHA-256 fingerprint
- 56:DE:D1:43:B4:2C:77:AD:9E:9E:E5:56:16:9E:7C:D6:FB:81:73:B9:C6:EE:B1:2A:1F:D3:75:59:BF:9F:C4:98
- 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 rikkyo-dormitory.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch rikkyo-dormitory.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.