SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
islands.gov.hk
SSL/TLS Certificate
SSL/TLS Certificate for islands.gov.hk
Valid- Issued by (CA)
- Hongkong Post
- Subject
- *.islands.gov.hk
- Valid from
- Dec 23, 2025
- Valid until
- Dec 23, 2026 (43 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 634A9FC35EFB1877E6FE6BD55FD15F9C4ADB247B
- SHA-256 fingerprint
- AF:0D:5F:05:94:E0:63:75:F4:29:B8:C1:15:C8:45:74:6F:DA:41:61:60:03:DF:6E:AF:87:DC:C3:1D:A5:F7:EB
- Chain
- Hongkong Post e-Cert SSL CA 3 - 17 → Hongkong Post Root CA 3 → GlobalSign
Certificate Authority Authorization (CAA)
CAA restricts issuance to ecert.gov.hk, hongkongpost.gov.hk; we couldn't map the serving CA (Hongkong Post) to one of these identifiers.
Never get surprised by islands.gov.hk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch islands.gov.hk 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, 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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