Public Security Cybersecurity Filing refers to registration with public security departments. This enables authorities to immediately contact website operators upon receiving reports, primarily to prevent malicious fraud and other illegal activities. Note: An ICP Filing alone is insufficient; PSB Filing requires prior possession of a valid ICP License.

PSB Filing Lookup Tool checks whether a website is registered with national public security authorities and retrieves its filing status.

A： PSB Filing Lookup Tool Overview:
1、Direct PSB Filing Verification：Check whether a domain has valid PSB Filing records.
​2、Comprehensive Filing Details：Retrieve PSB Filing numbers, jurisdictional records, and filing authorities.
​3、Bulk Domain Processing：Submit domains to instantly verify both PSB Filing and Public Security Filing status.

B： PSB Filing vs. ICP Filing Differences
1. First, the governing authority for "PSB Filing" is the Public Security Bureau (公安部), while the lead department for "ICP Filing" is the Ministry of Industry and Information Technology (工信部).
2. Second, websites used in mainland China (with servers in mainland) must complete "ICP Filing", but "PSB Filing" is optional and depends on local requirements or business specifics.
3. Third, the procedures and rules for both "PSB Filing" and "ICP Filing" vary based on policies of local authorities in each jurisdiction.
4. Finally, processing times for "PSB Filing" and "ICP Filing" are generally comparable. In most regions, PSB Filing is marginally faster; however, complete ICP Filing first before applying for PSB Filing.