NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

66 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days
T-MOBILE USA, INC. 66
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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2007-01-25 323-441-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2007-01-25 323-649-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 11 CA
2007-01-25 424-215-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SAN PEDRO CA
2007-01-25 425-329-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 HALLS LAKE WA
2007-01-25 562-781-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WHITTIER CA
2007-01-25 573-303-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 COLUMBIA MO
2007-01-25 573-303-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 COLUMBIA MO
2007-01-25 619-841-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CORONADO CA
2007-01-25 661-237-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SHAFTER CA
2007-01-25 661-932-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BKFD MAIN CA
2007-01-25 714-204-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ANAHEIM CA
2007-01-25 760-296-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 INDIO CA
2007-01-25 760-296-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 INDIO CA
2007-01-25 760-587-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2007-01-25 847-222-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2007-01-25 847-749-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2007-01-25 949-732-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 IRVINE CA
2007-01-24 319-493-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2007-01-24 505-515-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2007-01-24 928-310-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FLAGSTAFF AZ
2007-01-23 216-773-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TERRACE OH
2007-01-23 405-512-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2007-01-23 405-512-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2007-01-23 414-377-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN3 WI
2007-01-23 510-705-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OKLD BKLY CA
2007-01-23 513-410-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2007-01-23 513-629-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2007-01-22 210-251-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2007-01-22 210-251-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2007-01-22 210-251-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2007-01-22 323-354-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2007-01-22 323-354-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2007-01-22 408-463-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNJS SOUTH CA
2007-01-22 469-258-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-01-22 469-258-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-01-22 469-258-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-01-22 469-258-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-01-22 469-258-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-01-22 469-258-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-01-22 505-692-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ESPANOLA NM
2007-01-22 530-351-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 REDDING CA
2007-01-22 619-259-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NATIONALCY CA
2007-01-22 626-428-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AZUSA CA
2007-01-22 707-362-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EUREKA CA
2007-01-22 707-362-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EUREKA CA
2007-01-22 805-202-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARROYOGRND CA
2007-01-22 831-207-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HOLLISTER CA
2007-01-22 909-203-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHINO CA
2007-01-19 319-464-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2007-01-19 620-513-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HUTCHINSON KS

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.