NANPA Prefixes#

Use the NANPA Prefixes resource to retrieve NANPA prefixes available in the DIDWW inventory.

A NANPA prefix identifies a numbering prefix within the North American Numbering Plan. The npa attribute represents the Numbering Plan Area code, commonly referred to as the area code. The nxx attribute represents the central office code within the NPA.

NANPA prefixes can be used to filter coverage and inventory resources by country, region, NPA, NXX, combined NPA/NXX value, DID Group availability, or DID Group features.

Note

NANPA prefixes are available only for countries with country code +1.

Endpoints#

Action

Method

Endpoint

Retrieve all NANPA prefixes

GET

/v3/nanpa_prefixes

Retrieve a NANPA prefix

GET

/v3/nanpa_prefixes/{id}

Retrieve all NANPA prefixes#

Retrieves all NANPA prefixes available in the DIDWW inventory.

See Retrieve All NANPA Prefixes.

GET /v3/nanpa_prefixes

Retrieve NANPA prefix#

Retrieves a specific NANPA prefix by its unique ID.

See Retrieve NANPA Prefix.

GET /v3/nanpa_prefixes/{id}

Common NANPA prefix use cases#

Use case

Description

Filter North American DID inventory

Use NANPA prefixes to filter DID Groups and Available DIDs for countries with country code +1.

Search by area code

Use the npa value to find DID inventory for a specific Numbering Plan Area.

Search by central office code

Use the nxx value to narrow DID inventory within a specific NPA.

Filter by full NPA/NXX prefix

Use the combined NPA/NXX value to retrieve inventory for a specific numbering prefix.

Check DID availability

Filter NANPA prefixes by DID Group availability to find prefixes with available DIDs.

Filter by DID features

Filter NANPA prefixes by DID Group features such as inbound voice, outbound voice, T.38, inbound SMS, or outbound SMS.