Certificate authority
Hongkong Post / Certizen
Hongkong Post / Certizen operates 1 root certificate(s) trusted for TLS by at least one major root store (CCADB owner: Government of Hong Kong (SAR), Hongkong Post, Certizen; country: HK). See fingerprints, expiry and Chrome, Mozilla, Apple and Microsoft status.
Details
- CCADB CA owner
- Government of Hong Kong (SAR), Hongkong Post, Certizen
- Country
- HK
- Country (CCADB)
- China
- Roots
- 1
- Roots trusted for TLS
- Chrome 1 · Mozilla 1 · Apple 1 · Microsoft 1
- Intermediates under its roots
- 4 (2 valid)
- Auditor
- RSM Hong Kong
- CAA
hongkongpost.gov.hk
CAA records
The CCADB lists 3 CAA issuer domain(s) recognized by the currently valid intermediate certificates of Hongkong Post / Certizen. One issue record with any of them lets Hongkong Post / Certizen issue for your domain. Domains that contain the CA's name come first, the rest by how many valid intermediates recognize them.
Copy-ready record(s) for the first 3 domain(s):
example.com. CAA 0 issue "hongkongpost.gov.hk"
example.com. CAA 0 issue "ecert.gov.hk"
example.com. CAA 0 issue "globalsign.com"| Domain | Valid intermediates |
|---|---|
hongkongpost.gov.hk | 6 |
ecert.gov.hk | 6 |
globalsign.com | 1 |
For issuewild, iodef or DNS-provider formats, use the CAA record generator: CAA Generator
Root certificates (CCADB)
Hongkong Post / Certizen has 1 root certificate(s) in the CCADB TLS report. Together they have signed 4 intermediate CA certificates, 2 of them still valid.
Roots this CA owner has in the CCADB TLS Server Authentication report, with current status in each root store.
- trusted for TLS
- included with limits (NotBefore / no TLS bit)
- removed or blocked
- not included
| Root certificate | Key | Expires | Ch | Mo | Ap | MS | Intermediates |
|---|---|---|---|---|---|---|---|
| Hongkong Post Root CA 3 | RSA 4096 | 2042-06-03 | Included | Included | Included | Included | 4 (2) |
Valid intermediate CAs operated by Hongkong Post / Certizen under roots that other CAs own (CCADB; number of valid intermediates in brackets):
- GlobalSign nv-sa (1)
Audits
Audit data the CCADB records for the TLS roots of Hongkong Post / Certizen. Auditor(s): RSM Hong Kong. The most recent audit period ended on 2025-12-31.
| Audit | Scheme | Period | Statement | Report |
|---|---|---|---|---|
| Standard audit | WebTrust | 2025-01-01 – 2025-12-31 | 2026-02-24 | cpacanada.ca |
| Network security | WebTrust | 2025-01-01 – 2025-12-31 | 2026-02-24 | cpacanada.ca |
| TLS Baseline Requirements | WebTrust | 2025-01-01 – 2025-12-31 | 2026-02-24 | cpacanada.ca |
| TLS EV Guidelines | WebTrust | 2024-12-01 – 2025-11-30 | 2026-02-24 | cpacanada.ca |
CP/CPS documents
Certificate Policy and Certification Practice Statement links that Hongkong Post / Certizen has disclosed in the CCADB for its TLS roots, with effective dates:
- CP/CPS: https://www.ecert.gov.hk/product/cps/ecert/img/server_cps_en30.pdf (effective 2026-10-01)
- Markdown CP/CPS: https://www.ecert.gov.hk/product/cps/ecert/img/server_cps_en30.md (effective 2026-10-01)
- Document repository: https://www.ecert.gov.hk/product/cps/ecert/index.html
Report a certificate problem
To report a mis-issued certificate, a compromised private key or other abuse, use the channels Hongkong Post / Certizen lists in the CCADB (replace [at] and [dot] in addresses):
cpr[at]eCert[dot]gov[dot]hk
Incident reports
CAs in Mozilla's root program file compliance incident reports in Mozilla's Bugzilla (product CA Program, component CA Certificate Compliance). This search lists the bugs whose title contains the words “Hongkong Post”:
FAQ
What CAA record allows Hongkong Post / Certizen to issue certificates?
Publish example.com. CAA 0 issue "hongkongpost.gov.hk". The CCADB lists 3 recognized domain(s) for Hongkong Post / Certizen: hongkongpost.gov.hk, ecert.gov.hk, globalsign.com.
Who audits Hongkong Post / Certizen?
RSM Hong Kong, according to the CCADB. The latest TLS Baseline Requirements audit (WebTrust) covers 2025-01-01 to 2025-12-31; the statement is dated 2026-02-24.
How do I report a problem certificate to Hongkong Post / Certizen?
Use the channel(s) listed in the CCADB: cpr[at]eCert[dot]gov[dot]hk.
How many root certificates does Hongkong Post / Certizen have?
1 in the CCADB TLS report. Trusted for TLS: Chrome 1, Mozilla 1, Apple 1, Microsoft 1. They have signed 4 intermediates, 2 of them still valid.