What is number portability?

Number portability allows mobile users to keep their phone number when switching carriers. In New Zealand, this is managed by the IPMS (Industry Portability Management System).

How can I tell which carrier a number belongs to?

Use our free number portability checker to look up any NZ mobile number. It queries the IPMS database in real-time to show the current carrier and whether the number has been ported.

NZ Number Portability Checker | IPMS Lookup

Check Number Portability

Current Carrier:

Port Status:

Data sourced from IPMS (Industry Portability Management System)

Automate lookups with API access - just $0.005/lookup

API Response View API Docs

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About Number Portability in New Zealand

The Industry Portability Management System (IPMS) allows customers to keep their mobile number when switching between carriers. This tool checks the central IPMS database to determine which network currently services a number.

Number Porting

Keep your number when switching carriers

Real-Time Data

Live lookup from IPMS database

Accurate Results

Official carrier information

Supported New Zealand Networks

021, 025, 027

020, 021, 029

022, 028

Note: Original prefixes shown above. Numbers can be ported to any network regardless of original prefix.

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Why Check Number Portability?

SMS Routing

Ensure messages are routed through the correct carrier for optimal delivery

Cost Management

Different carriers may have different termination rates

Performance

Route messages through the fastest available path

Verification

Verify carrier information for business operations

Integrate with Your Systems

Our Phone Number Validation API lets you check carrier information and portability status programmatically.

View API Documentation Connexus API