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
2001-11-28 408-644 T-MOBILE USA, INC. 6529 SNJS SOUTH CA
2001-11-28 408-646 T-MOBILE USA, INC. 6529 SNJS WEST CA
2001-11-28 415-812 T-MOBILE USA, INC. 6529 SNFC JUNPR CA
2001-11-27 512-769 T-MOBILE USA, INC. 6529 AUSTIN TX
2001-11-20 808-631 T-MOBILE USA, INC. 6529 LIHUE HI
2001-11-19 216-376 T-MOBILE USA, INC. 6529 TERRACE OH
2001-11-15 253-632 T-MOBILE USA, INC. 6529 AUBURN WA
2001-11-15 708-932 T-MOBILE USA, INC. 6529 HARVEY IL
2001-11-15 808-398 T-MOBILE USA, INC. 6529 HONOLULU HI
2001-11-14 801-836 T-MOBILE USA, INC. 6529 PROVO UT
2001-11-13 224-381 T-MOBILE USA, INC. 6529 WAUKEGAN IL
2001-11-13 224-578 T-MOBILE USA, INC. 6529 PALATINE IL
2001-11-13 224-619 T-MOBILE USA, INC. 6529 DEERFIELD IL
2001-11-13 224-623 T-MOBILE USA, INC. 6529 ALGONQUIN IL
2001-11-13 224-766 T-MOBILE USA, INC. 6529 GLENVIEW IL
2001-11-13 661-750 T-MOBILE USA, INC. 6529 TEHACHAPI CA
2001-11-12 330-431 T-MOBILE USA, INC. 6529 AKRON OH
2001-11-09 214-776 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-11-07 253-878 T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2001-11-07 562-328 T-MOBILE USA, INC. 6529 WHITTIER CA
2001-11-06 210-833 T-MOBILE USA, INC. 6529 SANANTONIO TX
2001-11-05 773-742 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2001-11-02 208-608 T-MOBILE USA, INC. 6529 BOISE ID
2001-11-02 608-566 T-MOBILE USA, INC. 6529 PORTAGE WI
2001-11-02 608-567 T-MOBILE USA, INC. 6529 TOMAH WI
2001-10-30 515-208 T-MOBILE USA, INC. 6529 DES MOINES IA
2001-10-30 563-528 T-MOBILE USA, INC. 6529 DAVENPORT IA
2001-10-29 573-746 T-MOBILE USA, INC. 6529 LKOZKOSBCH MO
2001-10-26 970-631 T-MOBILE USA, INC. 6529 FT COLLINS CO
2001-10-25 940-923 T-MOBILE USA, INC. 6529 WICHITAFLS TX
2001-10-23 479-799 T-MOBILE USA, INC. 6529 FAYETTEVL AR
2001-10-23 541-292 T-MOBILE USA, INC. 6529 MEDFORD OR
2001-10-23 541-295 T-MOBILE USA, INC. 6529 GRANTSPASS OR
2001-10-23 682-438 T-MOBILE USA, INC. 6529 ARLINGTON TX
2001-10-22 360-689 T-MOBILE USA, INC. 6529 SILVERDALE WA
2001-10-18 224-629 T-MOBILE USA, INC. 6529 ELGIN IL
2001-10-18 310-920 T-MOBILE USA, INC. 6529 CMTN GRDN CA
2001-10-18 408-667 T-MOBILE USA, INC. 6529 SNJS NORTH CA
2001-10-18 408-898 T-MOBILE USA, INC. 6529 SARATOGA CA
2001-10-18 415-425 T-MOBILE USA, INC. 6529 SNFC MT-EV CA
2001-10-18 415-867 T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2001-10-18 510-224 T-MOBILE USA, INC. 6529 HRCUL-RODE CA
2001-10-18 760-672 T-MOBILE USA, INC. 6529 OCSD OCSD CA
2001-10-18 805-637 T-MOBILE USA, INC. 6529 SANBARBARA CA
2001-10-18 818-355 T-MOBILE USA, INC. 6529 BRBN BRBN CA
2001-10-18 916-595 T-MOBILE USA, INC. 6529 SCRM NORTH CA
2001-10-18 916-743 T-MOBILE USA, INC. 6529 SCRM MAIN CA
2001-10-18 925-639 T-MOBILE USA, INC. 6529 WALNUT CRK CA
2001-10-18 951-757 T-MOBILE USA, INC. 6529 TEMECULA CA
2001-10-12 432-978 T-MOBILE USA, INC. 6529 TERMINAL TX

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.