Number Portability Administration Center

Number Portability Administration Center Picture

In November 2004, TTC was designated by 12 of the Type 1 Telecom operators to construct and operate Number Portability Administration Center (NPAC). Taiwan's Number portability service (NP service) then officially started on October 13th, 2005.

After launching the service of NPAC, over 12 million fixed-line and 30 million mobile phone subscribers is benefited from NP service.

To enhance the convenience of NP service, TTC shortened the NP process from 4 working days to 1 working day by upgrading the system in early 2007. In 2015, TTC upgraded the system again, this allows the NP application process to take effect within hours without damages.

TTC also complies with the NCC’s policies to expand the capacity of the system and makes it possible to have effective dates even on national holidays. This change benefited Taiwan consumers and enhanced a greater efficiency of Taiwan NPAC system. 


    ISO 27001 LOGO ;
Certificate No: IS516613

    • In April 2007, NPAC was accredited by BSI and awarded the “ISO/IEC 270012005” certification.
    • NPAC has been passing the regularly semiannual review of “ISO/IEC 270012005” by BSI since 2007.
    • On May 3rd, 2015, NPAC was awarded with the convert accreditation of “Information Security Management System ISO/IEC 27001:2013”. With P-D-C-A management process and security control mechanism, NPAC shows the determination to guard the information security.
    Technical Capabilities
  • To design, implement, operate, and manage the NP central database system.
  • To set up the SOP and operate NOC of NPAC.

    The List of Telecom Service Operators and Government Units which NPAC provide service or support to.
        Chunghwa Telecom Co., Ltd. 

  • Number Portability service
    Provide NP application service to telecom operators.
    Offer 7/24 service on providing routing information to telecom operators .

  • Verification testing service
    Provide telecom operators services such as testing and verifying their Local Service Order Activations and Local Service Management Systems. Ensure the interfaces and processes among operators being in accord with NPAC and avoids interruption of overall service due to any single operator failure.
  • Consulting service
    Offer NP system and network planning, and consultation service according to different characteristics of operators such as shorten the on-line process and ensure system quality and stabilization of systems.
  • Training
    Provide operators with training courses to their NP technical and customer service staff.
  • Lawful interception support
    With NP service implemented, TTC is able support supervisory agencies to enforce the monitoring mission, and to benefit the social stabilization and national security.
  • Room B, 3F, No.1, Yuandong Rd., Banqiao District, New Taipei City 22063, Taiwan
  • Contact Person: Ms. Chen
  • Tel: +886-2-8953-5331
  • Fax: +886-2-8953-5655
About TTC  |   Bulletin  |   Laboratory  |   Services  |   Contact Us
Copyright © 2014 Telecom Technology Center.
Kaohsiung Office: No.3, Luke 1st Rd., Luzhu District, Kaohsiung City 82151, Taiwan Tel: +886-7-695-5001 Fax: +886-7-695-5019
New Taipei Office: Room B, 3F, No.1, Yuandong Rd., Banqiao District, New Taipei City 22063, Taiwan Tel: +886-2-8953-5600 Fax: +886-2-8953-5955

Web design

recommended browser: IE, Firefox, Chrome, 1024 x 768 resolution.