SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
as-web.jp
SSL/TLS Certificate
SSL/TLS Certificate for as-web.jp
Valid- Issued by (CA)
- Amazon
- Subject
- as-web.jp
- Valid from
- Jul 8, 2026
- Valid until
- Jan 21, 2027 (157 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 03BEDD171E91203975DB5E6A9C3064EA
- SHA-256 fingerprint
- 54:63:44:95:B1:1C:9D:BF:1F:98:3E:34:22:98:72:C4:71:7F:9B:EF:14:A3:45:56:81:44:C1:27:AB:5B:17:28
- Chain
- Amazon RSA 2048 M01 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
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 Aug 8, 2026.
Never get surprised by as-web.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch as-web.jp 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.