NumberResearch Membership · Data 09/26/2026

Recent thousands-block assignments

68 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026

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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2018-07-27 737-299-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LAMPASAS TX
2018-07-26 304-585-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 KIMBALL WV
2018-07-24 319-280-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KEOSAUQUA IA
2018-07-24 319-280-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 KEOSAUQUA IA
2018-07-24 319-280-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KEOSAUQUA IA
2018-07-19 319-677-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 KEOSAUQUA IA
2018-07-19 319-677-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 KEOSAUQUA IA
2018-07-19 319-677-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 KEOSAUQUA IA
2018-07-19 319-677-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KEOSAUQUA IA
2018-07-18 747-389-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 NO HOLLYWD CA
2018-07-18 916-306-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2018-07-18 916-306-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2018-07-18 916-306-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2018-07-18 916-306-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2018-07-13 206-502-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2018-07-13 425-624-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2018-07-13 425-624-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2018-07-13 425-624-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2018-07-13 425-732-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2018-07-13 503-354-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2018-07-13 503-354-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2018-07-13 626-412-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 COVINA CA
2018-07-13 972-903-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WAXAHACHIE TX
2018-07-13 972-903-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WAXAHACHIE TX
2018-07-12 702-861-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LAUGHLIN NV
2018-07-10 309-327-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PEORIA IL
2018-07-09 314-390-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2018-07-09 314-390-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2018-07-09 314-390-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2018-07-09 314-924-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2018-07-09 360-559-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CENTRALIA WA
2018-07-09 650-398-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SAN MATEO CA
2018-07-09 650-398-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SAN MATEO CA
2018-07-06 304-732-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PINEVILLE WV
2018-07-06 304-753-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PETERSTOWN WV
2018-07-06 682-268-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 FORT WORTH TX
2018-07-06 682-271-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GRAPEVINE TX
2018-07-06 682-271-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRAPEVINE TX
2018-07-06 682-432-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FORT WORTH TX
2018-06-28 725-206-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2018-06-28 725-206-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2018-06-26 702-268-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2018-06-26 702-268-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2018-06-26 702-268-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2018-06-26 725-251-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2018-06-25 209-592-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LOS BANOS CA
2018-06-25 360-728-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2018-06-25 424-391-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HAWTHORNE CA
2018-06-25 949-774-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 IRVINE CA
2018-06-25 949-774-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 IRVINE CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.