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
2011-07-08 872-212 T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2011-07-06 435-549 T-MOBILE USA, INC. 6529 VERNAL UT
2011-07-05 513-462 T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-07-05 940-333 T-MOBILE USA, INC. 6529 CHILDRESS TX
2011-06-30 708-759 T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-06-30 872-484 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2011-06-29 216-882 T-MOBILE USA, INC. 6529 CLEVELAND OH
2011-06-27 314-358 T-MOBILE USA, INC. 6529 LADUE MO
2011-06-22 501-272 T-MOBILE USA, INC. 6529 LITTLEROCK AR
2011-06-21 414-391 T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-20 872-233 T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2011-06-17 312-221 T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2011-06-15 708-264 T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-06-15 872-232 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2011-06-13 708-537 T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-06-13 872-230 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2011-06-09 414-388 T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-08 707-978 T-MOBILE USA, INC. 6529 SANTA ROSA CA
2011-06-03 414-639 T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-02 479-237 T-MOBILE USA, INC. 6529 RUSSELLVL AR
2011-06-02 501-243 T-MOBILE USA, INC. 6529 LITTLEROCK AR
2011-05-27 513-306 T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-05-27 513-356 T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-05-23 314-717 T-MOBILE USA, INC. 6529 KIRKWOOD MO
2011-05-23 575-689 T-MOBILE USA, INC. 6529 CARLSBAD NM
2011-05-18 872-220 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2011-05-06 501-237 T-MOBILE USA, INC. 6529 LONOKE AR
2011-05-03 801-600 T-MOBILE USA, INC. 6529 OGDEN UT
2011-05-03 801-800 T-MOBILE USA, INC. 6529 PROVO UT
2011-05-02 708-368 T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-05-02 708-378 T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-05-02 708-800 T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-05-02 872-800 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2011-04-28 319-486 T-MOBILE USA, INC. 6529 WATERLOO IA
2011-04-25 479-800 T-MOBILE USA, INC. 6529 FAYETTEVL AR
2011-04-21 872-223 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2011-04-21 918-892 T-MOBILE USA, INC. 6529 TULSA OK
2011-04-20 681-203 T-MOBILE USA, INC. 6529 HNTNGTNZN1 WV
2011-04-20 681-427 T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2011-04-05 702-350 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2011-03-31 630-731 T-MOBILE USA, INC. 6529 AURORA IL
2011-03-31 708-200 T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-03-29 760-979 T-MOBILE USA, INC. 6529 BARSTOW CA
2011-03-25 319-499 T-MOBILE USA, INC. 6529 IOWA CITY IA
2011-03-25 708-600 T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-03-22 515-525 T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-18 414-914 T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-03-16 513-301 T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-03-16 708-238 T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-03-15 859-414 T-MOBILE USA, INC. 6529 COVINGTON KY

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.