NumberResearch Membership · Data 09/25/2026

Recent thousands-block assignments

68 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/25/2026

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. 68
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2019-02-26 213-877-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2019-02-26 213-877-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2019-02-26 628-280-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SNFC MT-EV CA
2019-02-26 650-439-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2019-02-25 206-825-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2019-02-25 206-825-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2019-02-25 209-305-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MANTECA CA
2019-02-25 209-305-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MANTECA CA
2019-02-25 209-519-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LOS BANOS CA
2019-02-25 209-519-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LOS BANOS CA
2019-02-25 424-426-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HAWTHORNE CA
2019-02-25 424-502-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EL SEGUNDO CA
2019-02-25 442-270-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2019-02-25 562-399-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2019-02-25 562-503-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 NORWALK CA
2019-02-25 562-503-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 NORWALK CA
2019-02-25 626-453-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EL MONTE CA
2019-02-25 626-489-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL MONTE CA
2019-02-25 626-731-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNGBLCNN CA
2019-02-25 650-287-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SAN MATEO CA
2019-02-25 650-513-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SAN MATEO CA
2019-02-25 858-733-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 RNCHOPNQTS CA
2019-02-25 909-449-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MARSHALL CA
2019-02-25 949-723-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NEWPORTBCH CA
2019-02-25 951-222-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2019-02-25 951-261-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2019-02-22 702-969-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MESQUITE NV
2019-02-20 406-916-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HELENA MT
2019-02-20 520-759-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CASAGRANDE AZ
2019-02-20 530-608-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TRUCKEE CA
2019-02-20 725-208-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LAUGHLIN NV
2019-02-20 928-565-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 KINGMAN AZ
2019-02-19 442-515-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SAN MARCOS CA
2019-02-19 805-627-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNLUSOBSPO CA
2019-02-19 916-270-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WALNUT GRV CA
2019-02-19 925-839-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MARTINEZ CA
2019-02-18 224-757-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ROUND LAKE IL
2019-02-18 937-960-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TROTWOOD OH
2019-02-15 681-334-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OCEANA WV
2019-02-15 949-550-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CAPITRNVLY CA
2019-02-13 805-722-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2019-02-13 909-701-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 UPLAND CA
2019-02-11 480-651-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-02-11 480-651-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-02-11 480-651-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-02-11 530-460-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRVY MAIN CA
2019-02-07 636-829-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HIGH RIDGE MO
2019-02-07 636-829-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HIGH RIDGE MO
2019-02-07 903-270-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MT VERNON TX
2019-02-07 903-270-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MT VERNON TX

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.