NumberResearch Membership · Data 09/23/2026

Recent thousands-block assignments

59 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/23/2026

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. 59
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
2021-02-11 661-955-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2021-02-11 661-955-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2021-02-11 661-955-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2021-02-11 682-294-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WEATHERFD TX
2021-02-11 682-294-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WEATHERFD TX
2021-02-11 682-294-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WEATHERFD TX
2021-02-11 707-770-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 FRFLD-SUIS CA
2021-02-11 775-297-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CARSONCITY NV
2021-02-11 775-431-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CARSONCITY NV
2021-02-11 831-718-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MONTEREY CA
2021-02-11 858-298-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SNDG LVTA CA
2021-02-11 858-667-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SNDG LVTA CA
2021-02-11 858-667-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SNDG LVTA CA
2021-02-11 858-832-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 RNCHOSANFE CA
2021-02-11 858-832-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RNCHOSANFE CA
2021-02-11 858-899-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2021-02-11 858-899-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2021-02-11 858-899-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2021-02-11 916-839-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 RSVL MAIN CA
2021-02-11 916-839-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 RSVL MAIN CA
2021-02-11 945-900-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 WAXAHACHIE TX
2021-02-11 945-900-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WAXAHACHIE TX
2021-02-11 951-573-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2021-02-11 951-573-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2021-02-11 951-573-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2021-02-11 971-389-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2021-02-11 971-389-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2021-02-11 971-389-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2021-02-10 208-210-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 COERDALENE ID
2021-02-10 573-414-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DEXTER MO
2021-02-10 573-551-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KENNETT MO
2021-02-10 573-591-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MEXICO MO
2021-02-10 573-609-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 POPLAR BLF MO
2021-02-10 573-725-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LOUISIANA MO
2021-02-10 573-969-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CENTRALIA MO
2021-02-10 573-984-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 STEGNVIEVE MO
2021-02-10 620-402-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 WINFIELD KS
2021-02-10 620-480-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MCPHERSON KS
2021-02-10 620-491-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 KINGMAN KS
2021-02-10 636-201-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WARRENTON MO
2021-02-10 636-758-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ST CLAIR MO
2021-02-09 573-501-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HANNIBAL MO
2021-02-08 217-731-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CLINTON IL
2021-02-08 505-451-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NM
2021-02-08 520-473-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SIERRAVIST AZ
2021-02-08 573-952-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FLAT RIVER MO
2021-02-08 608-387-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TOMAH WI
2021-02-08 618-522-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 METROPOLIS IL
2021-02-05 219-424-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 RENSSELAER IN
2021-02-05 260-212-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 COLUMBIACY IN

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.