Filters reference#

Buy Numbers filters narrow available DID inventory by location, number type, whether registration is required, supported features, billing option, area name, and prefix. Use this reference when you need to confirm what each filter means before purchasing numbers.

Country and number type filters#

Each number type shows the number of available prefixes for the selected country. Number types with no available prefixes appear unavailable.

Filter	Description
Country	Filters inventory by the country where you want to purchase phone numbers.
Local	Shows geographic numbers tied to specific cities or regions.
National	Shows non-geographic numbers that provide a countrywide presence and are not linked to a specific locality.
Mobile	Shows numbers assigned to mobile networks.
Toll-free	Shows numbers that let callers connect without charge.
Shared Cost	Shows numbers where the call cost is shared between the caller and the recipient.
Global / UIFN	Shows Universal International Freephone Numbers that allow callers from multiple countries to reach your business using a single number.

Geographical selection filters#

Filter	Description
State / Region	Narrows the selection by state or administrative region within the selected country. This option is available only in countries with sub-national divisions, such as the United States, Canada, and the United Kingdom.
NPA/NXX	Narrows the selection to a specific area code or number prefix. This filter is mainly used in countries with structured numbering plans, such as the United States and Canada.

Registration filters#

Filter	Description
Required	Shows registration-required numbers that need end-user information before activation.
Not required	Shows numbers that do not require End-user verification before activation.

Supported feature filters#

Filter	Description
Inbound calls	Shows numbers that support SIP, PSTN, and phone.systems™ call forwarding.
Local CLI	Shows numbers that can be used as caller ID with DIDWW local routes.
Inbound Fax	Shows numbers that support T.38 or G.711u passthrough.
Inbound SMS	Shows numbers that support SMPP, HTTP, and Email SMS delivery.
Outbound A2P SMS	Shows numbers that can be used as long-code numbers for DIDWW A2P campaigns through SMPP and HTTP.
Outbound P2P SMS	Shows numbers that support SMPP and HTTP SMS delivery.
Emergency calling	Shows numbers that can be used to call local emergency service numbers.
Outbound CNAM	Shows numbers that support configurable caller name.

Note

When multiple supported feature filters are selected, only numbers that support all selected features are shown.

Billing option filters#

Filter	Description
Flat Rate	Shows numbers with a flat-rate pricing model. Dedicated channels are selected in the Channels Included field during purchase and cannot be shared with other DIDs. A recurring charge applies.
Metered	Shows numbers with the Pay-Per-Minute option. These numbers are assigned to a capacity group with 100 channels by default. The number of channels can be adjusted after purchase. Dedicated flat-rate channels are not included.

Text search filters#

Filter	Description
Area name	Finds numbers for a specific area or locality.
Prefix	Finds DID numbers that match the entered number prefix.