SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kpn-city.ru
SSL/TLS Certificate
SSL/TLS Certificate for kpn-city.ru
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- kpn-city.ru
- Valid from
- Jun 2, 2026
- Valid until
- Aug 31, 2026 (32 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05B8F1421F3A41547D99B6048D82D28C2E10
- SHA-256 fingerprint
- 48:9D:BA:50:CB:AA:23:93:99:EA:8E:CF:B4:E0:9F:D9:83:8E:6C:B9:61:42:74:48:6A:D4:CE:87:A2:7B:30:FA
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by kpn-city.ru's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch kpn-city.ru 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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