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
2013-08-01 206-981 T-MOBILE USA, INC. 6529 SEATTLE WA
2013-07-30 916-385 T-MOBILE USA, INC. 6529 ELK GROVE CA
2013-07-25 312-678 T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2013-07-23 509-212 T-MOBILE USA, INC. 6529 KENNEWICK WA
2013-07-22 650-445 T-MOBILE USA, INC. 6529 SAN MATEO CA
2013-07-22 858-260 T-MOBILE USA, INC. 6529 LA JOLLA CA
2013-07-15 323-714 T-MOBILE USA, INC. 6529 MONTEBELLO CA
2013-07-12 442-226 T-MOBILE USA, INC. 6529 BRAWLEY CA
2013-07-11 209-292 T-MOBILE USA, INC. 6529 STOCKTON CA
2013-07-11 708-904 T-MOBILE USA, INC. 6529 TINLEYPARK IL
2013-07-10 234-303 T-MOBILE USA, INC. 6529 AKRON OH
2013-07-09 224-336 T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-07-09 224-413 T-MOBILE USA, INC. 6529 WAUKEGAN IL
2013-07-09 224-415 T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-07-09 224-432 T-MOBILE USA, INC. 6529 GLENVIEW IL
2013-07-09 331-218 T-MOBILE USA, INC. 6529 WHEATON IL
2013-06-28 702-826 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2013-06-28 714-340 T-MOBILE USA, INC. 6529 YORBALINDA CA
2013-06-28 872-236 T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2013-06-28 872-238 T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2013-06-27 505-219 T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2013-06-27 872-234 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2013-06-26 424-299 T-MOBILE USA, INC. 6529 SNMN SNMN CA
2013-06-26 872-227 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2013-06-26 872-235 T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2013-06-26 872-243 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2013-06-25 224-253 T-MOBILE USA, INC. 6529 ALGONQUIN IL
2013-06-25 520-213 T-MOBILE USA, INC. 6529 CASAGRANDE AZ
2013-06-24 714-592 T-MOBILE USA, INC. 6529 BREA CA
2013-06-21 224-248 T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-06-20 512-375 T-MOBILE USA, INC. 6529 AUSTIN TX
2013-06-19 702-906 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2013-06-18 469-353 T-MOBILE USA, INC. 6529 FRISCO TX
2013-06-17 424-321 T-MOBILE USA, INC. 6529 EL SEGUNDO CA
2013-06-17 909-485 T-MOBILE USA, INC. 6529 ARROWHEAD CA
2013-06-14 234-804 T-MOBILE USA, INC. 6529 CANTON OH
2013-06-14 314-665 T-MOBILE USA, INC. 6529 ST LOUIS MO
2013-06-14 440-830 T-MOBILE USA, INC. 6529 LORAIN OH
2013-06-14 808-725 T-MOBILE USA, INC. 6529 HONOLULU HI
2013-06-13 219-702 T-MOBILE USA, INC. 6529 GARY IN
2013-06-13 224-806 T-MOBILE USA, INC. 6529 ELGIN IL
2013-06-13 708-506 T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2013-06-13 708-580 T-MOBILE USA, INC. 6529 TINLEYPARK IL
2013-06-12 405-402 T-MOBILE USA, INC. 6529 ANADARKO OK
2013-06-12 405-835 T-MOBILE USA, INC. 6529 OKLA CITY OK
2013-06-12 702-832 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2013-06-10 619-452 T-MOBILE USA, INC. 6529 SNDG SNDG CA
2013-06-07 720-965 T-MOBILE USA, INC. 6529 DENVER CO
2013-06-03 872-239 T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2013-06-03 949-396 T-MOBILE USA, INC. 6529 IRVINE CA

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.