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
2001-07-17 575-317 T-MOBILE USA, INC. 6529 ROSWELL NM
2001-07-17 575-318 T-MOBILE USA, INC. 6529 HOBBS NM
2001-07-17 801-628 T-MOBILE USA, INC. 6529 KAYSVILLE UT
2001-07-17 805-406 T-MOBILE USA, INC. 6529 SANTAMARIA CA
2001-07-17 925-567 T-MOBILE USA, INC. 6529 CLAYTON CA
2001-07-17 949-254 T-MOBILE USA, INC. 6529 IRVINE CA
2001-07-12 562-607 T-MOBILE USA, INC. 6529 LONG BEACH CA
2001-07-11 509-312 T-MOBILE USA, INC. 6529 ELLENSBURG WA
2001-07-06 312-735 T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2001-07-06 773-858 T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2001-07-05 636-368 T-MOBILE USA, INC. 6529 CHESTERFLD MO
2001-06-28 325-320 T-MOBILE USA, INC. 6529 ABILENE TX
2001-06-28 480-415 T-MOBILE USA, INC. 6529 PHOENIX AZ
2001-06-28 970-430 T-MOBILE USA, INC. 6529 FT COLLINS CO
2001-06-27 214-669 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-06-27 435-224 T-MOBILE USA, INC. 6529 TOOELE UT
2001-06-27 435-225 T-MOBILE USA, INC. 6529 BRIGHAM CY UT
2001-06-26 530-314 T-MOBILE USA, INC. 6529 SOUTHTAHOE CA
2001-06-26 530-979 T-MOBILE USA, INC. 6529 DAVIS CA
2001-06-25 626-786 T-MOBILE USA, INC. 6529 PSDN PSDN CA
2001-06-25 815-793 T-MOBILE USA, INC. 6529 DE KALB IL
2001-06-23 330-708 T-MOBILE USA, INC. 6529 ELIVERPOOL OH
2001-06-22 330-459 T-MOBILE USA, INC. 6529 AKRON OH
2001-06-21 847-445 T-MOBILE USA, INC. 6529 WAUKEGAN IL
2001-06-15 903-503 T-MOBILE USA, INC. 6529 MARSHALL TX
2001-06-15 903-830 T-MOBILE USA, INC. 6529 TYLER TX
2001-06-12 304-512 T-MOBILE USA, INC. 6529 RAVENSWOOD WV
2001-06-12 304-731 T-MOBILE USA, INC. 6529 BECKLEY WV
2001-06-12 304-741 T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2001-06-12 304-751 T-MOBILE USA, INC. 6529 HNTNGTNZN1 WV
2001-06-12 304-834 T-MOBILE USA, INC. 6529 PRKRSBGZN1 WV
2001-06-08 620-955 T-MOBILE USA, INC. 6529 KINGMAN KS
2001-06-07 214-870 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-06-06 630-788 T-MOBILE USA, INC. 6529 AURORA IL
2001-06-06 630-890 T-MOBILE USA, INC. 6529 WHEATON IL
2001-06-05 262-323 T-MOBILE USA, INC. 6529 NEWBURG WI
2001-05-31 219-308 T-MOBILE USA, INC. 6529 CROWNPOINT IN
2001-05-31 219-309 T-MOBILE USA, INC. 6529 VALPARAISO IN
2001-05-30 319-473 T-MOBILE USA, INC. 6529 KEOKUK IA
2001-05-30 319-537 T-MOBILE USA, INC. 6529 MTPLEASANT IA
2001-05-30 319-561 T-MOBILE USA, INC. 6529 FT MADISON IA
2001-05-30 618-709 T-MOBILE USA, INC. 6529 GRANITE CY IL
2001-05-30 618-917 T-MOBILE USA, INC. 6529 WOOD RIVER IL
2001-05-29 214-264 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-05-23 641-328 T-MOBILE USA, INC. 6529 MARSHALLTN IA
2001-05-23 773-931 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2001-05-22 708-935 T-MOBILE USA, INC. 6529 BLUEISLAND IL
2001-05-22 815-909 T-MOBILE USA, INC. 6529 DE KALB IL
2001-05-21 719-209 T-MOBILE USA, INC. 6529 COLORDOSPG CO
2001-05-18 415-286 T-MOBILE USA, INC. 6529 SNFC MT-EV 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.