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
2012-03-12 216-209 T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-03-12 234-205 T-MOBILE USA, INC. 6529 AKRON OH
2012-03-12 513-704 T-MOBILE USA, INC. 6529 CINCINNATI OH
2012-03-08 405-662 T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-03-08 918-889 T-MOBILE USA, INC. 6529 TULSA OK
2012-03-05 513-620 T-MOBILE USA, INC. 6529 CINCINNATI OH
2012-03-02 513-609 T-MOBILE USA, INC. 6529 CINCINNATI OH
2012-03-02 602-829 T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-02-24 515-918 T-MOBILE USA, INC. 6529 DES MOINES IA
2012-02-24 520-789 T-MOBILE USA, INC. 6529 TUCSON AZ
2012-02-24 661-418 T-MOBILE USA, INC. 6529 LANCASTER CA
2012-02-22 806-218 T-MOBILE USA, INC. 6529 LUBBOCK TX
2012-02-15 219-239 T-MOBILE USA, INC. 6529 GARY IN
2012-02-14 859-415 T-MOBILE USA, INC. 6529 COVINGTON KY
2012-02-10 702-763 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2012-02-08 702-815 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2012-01-23 224-803 T-MOBILE USA, INC. 6529 NORTHBROOK IL
2012-01-19 702-708 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2012-01-17 331-202 T-MOBILE USA, INC. 6529 ELMHURST IL
2012-01-12 805-366 T-MOBILE USA, INC. 6529 OXNARD CA
2011-12-27 405-565 T-MOBILE USA, INC. 6529 OKLA CITY OK
2011-12-21 513-510 T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-21 513-580 T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-20 801-919 T-MOBILE USA, INC. 6529 PROVO UT
2011-12-13 405-675 T-MOBILE USA, INC. 6529 OKLA CITY OK
2011-12-13 949-332 T-MOBILE USA, INC. 6529 CAPITRNVLY CA
2011-11-28 216-203 T-MOBILE USA, INC. 6529 CLEVELAND OH
2011-11-21 304-362 T-MOBILE USA, INC. 6529 BECKLEY WV
2011-11-21 435-414 T-MOBILE USA, INC. 6529 ST GEORGE UT
2011-11-16 513-413 T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-11-16 937-516 T-MOBILE USA, INC. 6529 DAYTON OH
2011-11-15 314-299 T-MOBILE USA, INC. 6529 LADUE MO
2011-11-15 314-357 T-MOBILE USA, INC. 6529 LADUE MO
2011-11-15 314-459 T-MOBILE USA, INC. 6529 LADUE MO
2011-11-10 775-203 T-MOBILE USA, INC. 6529 RENO NV
2011-11-08 708-509 T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-11-08 708-559 T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-10-31 720-474 T-MOBILE USA, INC. 6529 DENVER CO
2011-10-24 415-426 T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2011-10-21 331-205 T-MOBILE USA, INC. 6529 AURORA IL
2011-10-21 408-643 T-MOBILE USA, INC. 6529 SNJS NORTH CA
2011-10-17 405-505 T-MOBILE USA, INC. 6529 OKLA CITY OK
2011-10-14 501-264 T-MOBILE USA, INC. 6529 LITTLEROCK AR
2011-10-14 681-245 T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2011-10-12 331-203 T-MOBILE USA, INC. 6529 AURORA IL
2011-10-12 331-206 T-MOBILE USA, INC. 6529 AURORA IL
2011-10-12 708-208 T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-10-12 708-504 T-MOBILE USA, INC. 6529 LA GRANGE IL
2011-10-10 479-218 T-MOBILE USA, INC. 6529 FORT SMITH AR
2011-10-10 501-267 T-MOBILE USA, INC. 6529 MALVERN 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.