SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
daegu-deaf.or.kr
SSL/TLS Certificate
SSL/TLS Certificate for daegu-deaf.or.kr
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- daegu-deaf.or.kr
- Valid from
- Dec 29, 2025
- Valid until
- Dec 29, 2026 (108 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 282E45EDF8774FA26A2CDD70F9F76810
- SHA-256 fingerprint
- 4C:1A:71:7E:B1:01:8B:41:33:83:6E:48:E6:43:19:6C:B0:B7:41:D2:1F:A9:1E:CF:CB:FE:47:12:40:E3:81:C6
- Chain
- Sectigo RSA Domain Validation Secure Server CA → USERTrust RSA Certification Authority → AAA Certificate Services
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by daegu-deaf.or.kr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch daegu-deaf.or.kr 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.