NALENND™

Wireless Block Identifier Database

Produced: on or before 5th calendar day monthly
Current Release: June 5, 2013
Distribution Frequency: monthly
Distribution Format: Internet download

The NALENND™ wireless block identifier database is used to identify United States and Canadian telephone numbers as wireless or landline based on current telecom carrier block assignments. Updated monthly, the database lists all active telephone Area Codes (NPA) and Exchange Prefixes (NXX) at the thousands block level with each block representing 1,000 telephone numbers and identifies each block as either wireless (cellular) or landline.

This data provides a first step for those applications seeking U.S. FCC TCPA compliance. These wireless do not call rules prohibit the initiation of telephone calls using automatic telephone dialing systems or an artificial or prerecorded voice to telephone numbers assigned to a paging service, cellular telephone service, specialized mobile radio service, or other radio common carrier service, or any service for which the called party is charged for the call.

While this database can correctly identify approximately 97% of all telephone numbers as either landline or wireless, both the NALENND™ wireless block identifier database and the Neustar Intermodal Ported Telephone Number database which contains United States nationwide ported telephone numbers that have been moved from landline to wireless and wireless to landline are required for those applications seeking 100% compliance with United States wireless do not call rules.

NALENND™ Wireless Block Identifier Database Editions

Data Field Content	Premium Edition Data Fields	Standard Edition Data Fields	Enter a ten (10) digit telephone number to identify the number type.
Area Code (NPA)	Yes	Yes
Exchange Prefix (NXX)	Yes	Yes
1,000 Block Identifier	Yes	Yes
ISO 3166 Country Code	Yes	No
State or Province Abbreviation	Yes	No
Time Zone (UTC)	Yes	No
Daylight Savings Time (DST)	Yes	No
Number Type (BLOCKTYPE)	Yes	Yes