NumberResearch Membership · Data 2026-04

Recent prefix assignments

5 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.

Most active assignees, last 30 days
T-MOBILE USA, INC. 5
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXAssigneeOCNRate centerState
2005-10-07 702-756 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2005-10-06 325-726 T-MOBILE USA, INC. 6529 COLEMAN TX
2005-10-06 630-401 T-MOBILE USA, INC. 6529 AURORA IL
2005-10-06 815-582 T-MOBILE USA, INC. 6529 JOLIET IL
2005-10-05 505-608 T-MOBILE USA, INC. 6529 FARMINGTON NM
2005-09-30 773-701 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2005-09-30 773-954 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2005-09-28 708-833 T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2005-09-21 623-433 T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-09-20 541-550 T-MOBILE USA, INC. 6529 BEND OR
2005-09-15 714-873 T-MOBILE USA, INC. 6529 ANAHEIM CA
2005-09-13 773-641 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2005-09-09 432-755 T-MOBILE USA, INC. 6529 PECOS TX
2005-09-08 714-837 T-MOBILE USA, INC. 6529 WESTMINSTR CA
2005-09-01 541-813 T-MOBILE USA, INC. 6529 BROOKINGS OR
2005-09-01 630-864 T-MOBILE USA, INC. 6529 NAPERVILLE IL
2005-08-30 310-982 T-MOBILE USA, INC. 6529 SAN PEDRO CA
2005-08-30 702-883 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2005-08-12 702-884 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2005-08-08 712-797 T-MOBILE USA, INC. 6529 WALL LAKE IA
2005-08-01 619-623 T-MOBILE USA, INC. 6529 CHULAVISTA CA
2005-08-01 951-992 T-MOBILE USA, INC. 6529 MORENO CA
2005-07-29 805-612 T-MOBILE USA, INC. 6529 OXNARD CA
2005-07-29 909-538 T-MOBILE USA, INC. 6529 POMONA CA
2005-07-22 951-345 T-MOBILE USA, INC. 6529 PERRIS CA
2005-07-20 951-867 T-MOBILE USA, INC. 6529 MORENO CA
2005-07-14 773-606 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2005-06-30 224-848 T-MOBILE USA, INC. 6529 BARRINGTON IL
2005-06-30 773-603 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2005-06-30 773-656 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2005-06-29 937-733 T-MOBILE USA, INC. 6529 EATON OH
2005-06-28 619-565 T-MOBILE USA, INC. 6529 CHULAVISTA CA
2005-06-23 254-415 T-MOBILE USA, INC. 6529 KILLEEN TX
2005-06-23 940-473 T-MOBILE USA, INC. 6529 VERNON TX
2005-06-17 641-903 T-MOBILE USA, INC. 6529 MASON CITY IA
2005-06-11 702-439 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2005-06-09 480-393 T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-06-06 314-448 T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-06-02 928-550 T-MOBILE USA, INC. 6529 SOMERTON AZ
2005-05-25 951-795 T-MOBILE USA, INC. 6529 TEMECULA CA
2005-05-20 480-388 T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-05-13 909-520 T-MOBILE USA, INC. 6529 S BERNDINO CA
2005-05-10 310-703 T-MOBILE USA, INC. 6529 INGLEWOOD CA
2005-04-28 630-901 T-MOBILE USA, INC. 6529 NAPERVILLE IL
2005-04-22 224-355 T-MOBILE USA, INC. 6529 NORTHBROOK IL
2005-04-22 224-636 T-MOBILE USA, INC. 6529 NORTHBROOK IL
2005-04-22 708-969 T-MOBILE USA, INC. 6529 TINLEYPARK IL
2005-04-21 210-577 T-MOBILE USA, INC. 6529 SANANTONIO TX
2005-04-21 512-905 T-MOBILE USA, INC. 6529 AUSTIN TX
2005-04-21 815-992 T-MOBILE USA, INC. 6529 STREATOR IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.