NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

59 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2007-03-07 773-939-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2007-03-07 773-939-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2007-03-07 815-630-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2007-03-07 972-536-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2007-03-07 972-657-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2007-03-07 972-785-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2007-03-06 213-265-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2007-03-06 323-378-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2007-03-06 503-586-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2007-03-06 505-974-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2007-03-06 509-205-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2007-03-06 509-374-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2007-03-06 559-316-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FOWLER CA
2007-03-06 626-551-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2007-03-06 626-551-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2007-03-06 626-551-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2007-03-06 720-278-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2007-03-06 801-691-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2007-03-06 909-575-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLAREMONT CA
2007-03-05 641-444-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BELMOND IA
2007-03-05 720-300-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2007-03-05 720-300-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2007-03-05 720-300-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2007-03-02 214-218-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MCKINNEY TX
2007-03-02 214-218-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MCKINNEY TX
2007-03-02 316-293-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WICHITA KS
2007-03-02 405-532-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2007-03-02 469-274-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-03-02 469-274-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-03-02 580-514-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2007-03-01 213-245-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2007-03-01 213-245-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2007-03-01 213-245-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2007-03-01 213-245-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2007-03-01 213-245-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2007-03-01 213-245-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2007-03-01 213-245-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2007-03-01 304-699-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PRKRSBGZN1 WV
2007-03-01 304-699-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PRKRSBGZN1 WV
2007-03-01 319-651-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CEDAR RPDS IA
2007-03-01 562-316-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LAKEWOOD CA
2007-03-01 661-208-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PLDL PLDL CA
2007-03-01 714-352-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANTA ANA CA
2007-03-01 818-397-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2007-02-28 325-899-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ABILENE TX
2007-02-28 636-697-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ST PETERS MO
2007-02-28 650-284-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2007-02-28 760-978-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OCSD OCSD CA
2007-02-28 859-957-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 COVINGTON KY
2007-02-28 859-957-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 COVINGTON KY

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.