SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
oba-shika.com
SSL/TLS Certificate
SSL/TLS Certificate for oba-shika.com
Expiring soon- Issued by (CA)
- Let's Encrypt
- Subject
- oba-shika.com
- Valid from
- Aug 12, 2026
- Valid until
- Nov 10, 2026 (20 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0645B299781AD2902758324777D28E6C0A36
- SHA-256 fingerprint
- 3D:41:67:E8:01:0D:46:92:90:1F:30:09:8E:32:FE:31:AD:54:7F:E5:B8:35:BF:F1:4E:56:24:B5:F5:65:7D:90
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Sep 15, 2026.
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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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