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
2006-11-16 316-587 T-MOBILE USA, INC. 6529 NEWTON KS
2006-11-16 563-537 T-MOBILE USA, INC. 6529 MONONA IA
2006-11-09 714-616 T-MOBILE USA, INC. 6529 ANAHEIM CA
2006-11-08 773-614 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2006-11-08 773-629 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2006-11-07 310-310 T-MOBILE USA, INC. 6529 SNMN SNMN CA
2006-11-01 405-436 T-MOBILE USA, INC. 6529 OKLA CITY OK
2006-11-01 515-447 T-MOBILE USA, INC. 6529 DES MOINES IA
2006-11-01 702-351 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2006-10-30 773-595 T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2006-10-26 213-245 T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2006-10-26 432-212 T-MOBILE USA, INC. 6529 TERMINAL TX
2006-10-25 682-203 T-MOBILE USA, INC. 6529 ARLINGTON TX
2006-10-23 580-715 T-MOBILE USA, INC. 6529 CLINTON OK
2006-10-23 580-890 T-MOBILE USA, INC. 6529 WEATHERFD OK
2006-10-16 323-747 T-MOBILE USA, INC. 6529 LSAN DA 03 CA
2006-10-13 405-532 T-MOBILE USA, INC. 6529 OKLA CITY OK
2006-10-13 630-888 T-MOBILE USA, INC. 6529 AURORA IL
2006-10-13 937-717 T-MOBILE USA, INC. 6529 SPRINGFLD OH
2006-10-04 323-892 T-MOBILE USA, INC. 6529 LSAN DA 03 CA
2006-10-03 630-808 T-MOBILE USA, INC. 6529 ELMHURST IL
2006-10-03 773-853 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2006-09-26 314-686 T-MOBILE USA, INC. 6529 KIRKWOOD MO
2006-09-26 818-588 T-MOBILE USA, INC. 6529 BRBN BRBN CA
2006-09-21 323-570 T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2006-09-21 714-548 T-MOBILE USA, INC. 6529 WESTMINSTR CA
2006-09-21 818-941 T-MOBILE USA, INC. 6529 VAN NUYS CA
2006-09-21 858-652 T-MOBILE USA, INC. 6529 LA JOLLA CA
2006-09-20 224-789 T-MOBILE USA, INC. 6529 ZION IL
2006-09-19 708-663 T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2006-09-18 949-732 T-MOBILE USA, INC. 6529 IRVINE CA
2006-09-18 951-823 T-MOBILE USA, INC. 6529 RIVERSIDE CA
2006-09-08 708-979 T-MOBILE USA, INC. 6529 TINLEYPARK IL
2006-09-05 760-693 T-MOBILE USA, INC. 6529 EL CENTRO CA
2006-08-31 512-584 T-MOBILE USA, INC. 6529 AUSTIN TX
2006-08-30 702-787 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2006-08-28 480-406 T-MOBILE USA, INC. 6529 PHOENIX AZ
2006-08-23 562-726 T-MOBILE USA, INC. 6529 LONG BEACH CA
2006-08-21 951-570 T-MOBILE USA, INC. 6529 PERRIS CA
2006-07-28 515-339 T-MOBILE USA, INC. 6529 DES MOINES IA
2006-07-26 773-679 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2006-07-25 314-556 T-MOBILE USA, INC. 6529 ST LOUIS MO
2006-07-24 815-630 T-MOBILE USA, INC. 6529 JOLIET IL
2006-07-21 773-877 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2006-07-14 253-330 T-MOBILE USA, INC. 6529 TACOMA WA
2006-07-13 630-340 T-MOBILE USA, INC. 6529 AURORA IL
2006-07-11 808-450 T-MOBILE USA, INC. 6529 HONOLULU HI
2006-07-03 702-917 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2006-06-27 219-455 T-MOBILE USA, INC. 6529 GARY IN
2006-06-23 708-949 T-MOBILE USA, INC. 6529 ORLAND 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.