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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2007-08-02 541-212-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ONTARIO OR
2007-08-02 650-284-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2007-08-02 760-913-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 VALLEY CTR CA
2007-08-02 806-517-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AMARILLO TX
2007-08-02 806-517-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AMARILLO TX
2007-08-02 806-517-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AMARILLO TX
2007-08-02 806-517-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AMARILLO TX
2007-08-02 806-881-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 AMARILLO TX
2007-08-02 806-881-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AMARILLO TX
2007-08-02 806-881-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AMARILLO TX
2007-08-02 818-573-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SNFN PACM CA
2007-08-02 903-259-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 GREENVILLE TX
2007-08-02 903-259-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GREENVILLE TX
2007-08-02 915-781-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2007-08-02 915-781-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2007-08-01 219-242-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 VALPARAISO IN
2007-08-01 219-809-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MICHIGANCY IN
2007-08-01 314-685-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2007-08-01 330-685-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CANTON OH
2007-08-01 330-741-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BRUNSWICK OH
2007-08-01 360-441-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WHATCOMCTY WA
2007-08-01 360-441-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WHATCOMCTY WA
2007-08-01 360-441-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WHATCOMCTY WA
2007-08-01 360-610-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2007-08-01 360-610-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2007-08-01 360-610-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2007-08-01 509-619-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2007-08-01 509-619-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2007-08-01 562-309-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WHITTIER CA
2007-08-01 920-573-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OSHKOSH WI
2007-08-01 920-573-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OSHKOSH WI
2007-08-01 951-603-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TEMSCL CNY CA
2007-08-01 970-424-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRAND JCT CO
2007-08-01 970-424-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRAND JCT CO
2007-07-31 323-909-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2007-07-31 425-289-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2007-07-31 425-289-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2007-07-31 425-372-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2007-07-31 425-372-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2007-07-31 425-635-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2007-07-31 425-647-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2007-07-31 608-738-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LA CROSSE WI
2007-07-31 608-738-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LA CROSSE WI
2007-07-31 619-534-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-07-31 619-534-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-07-31 970-424-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GRAND JCT CO
2007-07-31 970-424-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GRAND JCT CO
2007-07-30 925-705-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WALNUT CRK CA
2007-07-30 925-956-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WALNUT CRK CA
2007-07-27 304-894-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BECKLEY WV

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.