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
2002-01-29 408-460 T-MOBILE USA, INC. 6529 CAMPBELL CA
2002-01-29 415-465 T-MOBILE USA, INC. 6529 SAUSALITO CA
2002-01-29 530-591 T-MOBILE USA, INC. 6529 CHICO CA
2002-01-29 559-300 T-MOBILE USA, INC. 6529 VISALIA CA
2002-01-29 559-305 T-MOBILE USA, INC. 6529 REEDLEY CA
2002-01-29 928-399 T-MOBILE USA, INC. 6529 SEDONA AZ
2002-01-29 928-458 T-MOBILE USA, INC. 6529 PRESCOTT AZ
2002-01-28 626-354 T-MOBILE USA, INC. 6529 PSDN PSDN CA
2002-01-28 702-326 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2002-01-28 707-342 T-MOBILE USA, INC. 6529 VALLEJO CA
2002-01-28 760-580 T-MOBILE USA, INC. 6529 ESCONDIDO CA
2002-01-28 805-268 T-MOBILE USA, INC. 6529 SANTAMARIA CA
2002-01-28 805-294 T-MOBILE USA, INC. 6529 LOMPOC CA
2002-01-28 805-302 T-MOBILE USA, INC. 6529 OXNARD CA
2002-01-28 805-304 T-MOBILE USA, INC. 6529 SIMIVALLEY CA
2002-01-28 818-581 T-MOBILE USA, INC. 6529 SNFN SNFN CA
2002-01-28 916-412 T-MOBILE USA, INC. 6529 RSVL MAIN CA
2002-01-28 916-432 T-MOBILE USA, INC. 6529 RIO LINDA CA
2002-01-28 916-477 T-MOBILE USA, INC. 6529 WALNUT GRV CA
2002-01-24 479-599 T-MOBILE USA, INC. 6529 SILOAM SPG AR
2002-01-23 312-804 T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2002-01-23 773-704 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2002-01-18 858-220 T-MOBILE USA, INC. 6529 LA JOLLA CA
2002-01-17 224-577 T-MOBILE USA, INC. 6529 ROUND LAKE IL
2002-01-17 630-803 T-MOBILE USA, INC. 6529 AURORA IL
2002-01-16 414-736 T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2002-01-16 414-737 T-MOBILE USA, INC. 6529 MILWAUKZN5 WI
2002-01-16 636-667 T-MOBILE USA, INC. 6529 WASHINGTON MO
2002-01-16 661-220 T-MOBILE USA, INC. 6529 ARVIN CA
2002-01-16 661-221 T-MOBILE USA, INC. 6529 MOJAVE CA
2002-01-16 661-292 T-MOBILE USA, INC. 6529 SHAFTER CA
2002-01-16 661-293 T-MOBILE USA, INC. 6529 TAFT CA
2002-01-16 661-300 T-MOBILE USA, INC. 6529 TEHACHAPI CA
2002-01-16 831-210 T-MOBILE USA, INC. 6529 SALINAS CA
2002-01-16 858-205 T-MOBILE USA, INC. 6529 DEL MAR CA
2002-01-16 915-443 T-MOBILE USA, INC. 6529 EL PASO TX
2002-01-15 928-446 T-MOBILE USA, INC. 6529 YUMA AZ
2002-01-15 928-848 T-MOBILE USA, INC. 6529 PRESCOTT AZ
2002-01-14 254-733 T-MOBILE USA, INC. 6529 WACO TX
2002-01-12 330-371 T-MOBILE USA, INC. 6529 CANTON OH
2002-01-10 563-676 T-MOBILE USA, INC. 6529 DAVENPORT IA
2002-01-07 210-683 T-MOBILE USA, INC. 6529 SANANTONIO TX
2002-01-07 573-586 T-MOBILE USA, INC. 6529 FTLENARDWD MO
2002-01-07 830-477 T-MOBILE USA, INC. 6529 GILLETT TX
2002-01-04 773-426 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2001-12-28 408-480 T-MOBILE USA, INC. 6529 SUNNYVALE CA
2001-12-28 805-300 T-MOBILE USA, INC. 6529 THOUSAOAKS CA
2001-12-28 818-571 T-MOBILE USA, INC. 6529 VAN NUYS CA
2001-12-28 916-220 T-MOBILE USA, INC. 6529 FOLSOM CA
2001-12-28 916-225 T-MOBILE USA, INC. 6529 FAIR OAKS 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.