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
2001-02-20 720-314 T-MOBILE USA, INC. 6529 DENVER CO
2001-02-20 830-385 T-MOBILE USA, INC. 6529 MARBLE FLS TX
2001-02-20 847-219 T-MOBILE USA, INC. 6529 LAKEFOREST IL
2001-02-20 847-312 T-MOBILE USA, INC. 6529 ELK GROVE IL
2001-02-20 847-630 T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2001-02-20 847-668 T-MOBILE USA, INC. 6529 LIBERTYVL IL
2001-02-20 971-212 T-MOBILE USA, INC. 6529 PORTLAND OR
2001-02-14 623-202 T-MOBILE USA, INC. 6529 PHOENIX AZ
2001-02-14 630-688 T-MOBILE USA, INC. 6529 ELMHURST IL
2001-02-14 773-507 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2001-02-13 253-217 T-MOBILE USA, INC. 6529 AUBURN WA
2001-02-12 325-895 T-MOBILE USA, INC. 6529 SAN ANGELO TX
2001-02-12 432-416 T-MOBILE USA, INC. 6529 MIDLAND TX
2001-02-12 630-440 T-MOBILE USA, INC. 6529 W CHICAGO IL
2001-02-12 708-289 T-MOBILE USA, INC. 6529 ORLAND IL
2001-02-12 773-501 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2001-02-12 773-968 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2001-02-12 806-517 T-MOBILE USA, INC. 6529 AMARILLO TX
2001-02-12 806-548 T-MOBILE USA, INC. 6529 LUBBOCK TX
2001-02-09 319-601 T-MOBILE USA, INC. 6529 BURLINGTON IA
2001-02-09 641-455 T-MOBILE USA, INC. 6529 OTTUMWA IA
2001-02-08 915-892 T-MOBILE USA, INC. 6529 EL PASO TX
2001-02-06 440-622 T-MOBILE USA, INC. 6529 PAINESVL OH
2001-02-06 440-623 T-MOBILE USA, INC. 6529 BEREA OH
2001-02-06 937-790 T-MOBILE USA, INC. 6529 FRANKLIN OH
2001-02-05 608-658 T-MOBILE USA, INC. 6529 MADISON WI
2001-02-02 636-219 T-MOBILE USA, INC. 6529 ST CHARLES MO
2001-02-02 636-578 T-MOBILE USA, INC. 6529 ST CHARLES MO
2001-01-31 219-805 T-MOBILE USA, INC. 6529 GARY IN
2001-01-31 219-902 T-MOBILE USA, INC. 6529 GARY IN
2001-01-30 480-329 T-MOBILE USA, INC. 6529 PHOENIX AZ
2001-01-29 210-831 T-MOBILE USA, INC. 6529 SANANTONIO TX
2001-01-29 480-200 T-MOBILE USA, INC. 6529 PHOENIX AZ
2001-01-29 520-256 T-MOBILE USA, INC. 6529 TUCSON AZ
2001-01-29 719-205 T-MOBILE USA, INC. 6529 COLORDOSPG CO
2001-01-29 720-203 T-MOBILE USA, INC. 6529 DENVER CO
2001-01-26 636-579 T-MOBILE USA, INC. 6529 CHESTERFLD MO
2001-01-26 951-965 T-MOBILE USA, INC. 6529 RIVERSIDE CA
2001-01-25 360-286 T-MOBILE USA, INC. 6529 SILVERDALE WA
2001-01-25 469-450 T-MOBILE USA, INC. 6529 MCKINNEY TX
2001-01-25 512-887 T-MOBILE USA, INC. 6529 GEORGETOWN TX
2001-01-25 530-415 T-MOBILE USA, INC. 6529 MARYSVILLE CA
2001-01-25 630-400 T-MOBILE USA, INC. 6529 ELGIN IL
2001-01-25 630-854 T-MOBILE USA, INC. 6529 NAPERVILLE IL
2001-01-25 760-784 T-MOBILE USA, INC. 6529 BISHOP CA
2001-01-25 903-332 T-MOBILE USA, INC. 6529 PARIS TX
2001-01-24 815-514 T-MOBILE USA, INC. 6529 JOLIET IL
2001-01-24 815-516 T-MOBILE USA, INC. 6529 ROCKFORD IL
2001-01-23 501-818 T-MOBILE USA, INC. 6529 MALVERN AR
2001-01-23 870-562 T-MOBILE USA, INC. 6529 MAGNOLIA AR

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.