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
2012-06-27 408-609-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNJS NORTH CA
2012-06-27 415-528-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SNFC JUNPR CA
2012-06-27 661-390-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2012-06-27 858-519-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DEL MAR CA
2012-06-26 217-607-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2012-06-26 224-203-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2012-06-26 224-203-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2012-06-26 224-205-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2012-06-26 224-803-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2012-06-26 224-803-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2012-06-26 224-803-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2012-06-26 224-803-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2012-06-26 224-803-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2012-06-26 224-803-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2012-06-26 626-417-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2012-06-26 626-417-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2012-06-26 626-586-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2012-06-26 626-726-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARCADIA CA
2012-06-26 626-726-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARCADIA CA
2012-06-26 626-782-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2012-06-26 830-200-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PLEASANTON TX
2012-06-22 209-259-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MERCED CA
2012-06-22 209-259-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MERCED CA
2012-06-22 405-667-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-06-22 405-667-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-06-22 405-667-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-06-22 405-667-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-06-22 405-667-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-06-22 405-667-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-06-22 405-667-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-06-22 405-667-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-06-22 405-667-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-06-22 760-423-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PALMDESERT CA
2012-06-22 909-343-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2012-06-22 909-343-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2012-06-21 510-322-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 HRCUL-RODE CA
2012-06-21 951-400-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2012-06-21 951-400-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2012-06-21 951-400-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2012-06-21 951-400-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2012-06-15 608-473-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BELOIT WI
2012-06-15 720-612-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2012-06-14 405-548-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-06-14 405-548-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-06-14 405-548-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-06-12 216-239-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-06-12 216-239-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-06-12 425-407-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2012-06-12 425-407-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2012-06-12 469-267-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ROCKWALL TX

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.