SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for r-edu.id
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- r-edu.id
- Valid from
- Sep 7, 2026
- Valid until
- Dec 6, 2026 (63 days remaining)
- Public key
- EC 256-bit
- Serial
- 0538AF5EB9ED3A045FD0C9929FB233C9DB2A
- SHA-256 fingerprint
- 95:FF:2F:54:92:94:0C:A0:F6:38:69:90:CC:73:CA:E9:64:7B:44:BF:9B:C4:31:D9:E8:00:29:EE:09:EC:7B:D0
- Chain
- YE2 → Root YE → ISRG Root X2 → 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 Sep 15, 2026.
Never get surprised by r-edu.id's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch r-edu.id 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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