SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
marmara.edu.tr
SSL/TLS Certificate
SSL/TLS Certificate for marmara.edu.tr
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.marmara.edu.tr
- Valid from
- Jul 13, 2026
- Valid until
- Jan 27, 2027 (101 days remaining)
- Public key
- RSA 3072-bit
- Serial
- E54BDDDE590F9380045085EEC1E66849
- SHA-256 fingerprint
- 07:9E:A3:52:6E:2E:5B:94:0C:D5:1D:19:A5:9B:45:60:A1:D5:9D:C9:A7:07:3E:82:38:17:A3:27:54:ED:46:0E
- Chain
- Sectigo Public Server Authentication CA OV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority → AAA Certificate Services
Certificate Authority Authorization (CAA)
The serving CA (Sectigo Limited) is authorized by this domain's CAA records (sectigo.com).
This certificate has been served since Sep 8, 2026.
Never get surprised by marmara.edu.tr's certificate expiring
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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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