NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

59 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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
2007-02-22 219-256-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 E CHICAGO IN
2007-02-22 219-433-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GARY IN
2007-02-22 219-433-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GARY IN
2007-02-22 219-433-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GARY IN
2007-02-22 219-433-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GARY IN
2007-02-22 310-321-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EL SEGUNDO CA
2007-02-22 323-213-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2007-02-22 323-213-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2007-02-22 424-203-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LOMITA CA
2007-02-22 432-816-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BIG SPRING TX
2007-02-22 708-527-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HARVEY IL
2007-02-22 708-527-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HARVEY IL
2007-02-22 714-363-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ORANGE CA
2007-02-22 714-363-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ORANGE CA
2007-02-22 714-769-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ORANGE CA
2007-02-22 773-939-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2007-02-22 773-939-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2007-02-22 773-939-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2007-02-22 773-939-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2007-02-22 808-589-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2007-02-22 808-589-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2007-02-22 970-366-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GLENWD SPG CO
2007-02-21 253-880-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2007-02-21 323-354-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2007-02-21 330-774-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 YOUNGSTOWN OH
2007-02-21 330-774-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 YOUNGSTOWN OH
2007-02-21 432-212-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TERMINAL TX
2007-02-21 432-212-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TERMINAL TX
2007-02-21 562-846-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WHITTIER CA
2007-02-21 580-799-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ELK CITY OK
2007-02-21 760-884-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ESCONDIDO CA
2007-02-21 760-888-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ESCONDIDO CA
2007-02-21 760-927-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 VICTORVL CA
2007-02-21 805-621-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANTAMARIA CA
2007-02-21 805-868-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SANTAMARIA CA
2007-02-21 949-335-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NEWPORTBCH CA
2007-02-21 971-340-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2007-02-21 971-340-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2007-02-20 405-532-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2007-02-20 405-532-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2007-02-20 405-532-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2007-02-20 469-274-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-02-20 469-274-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-02-20 469-274-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-02-20 469-274-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-02-20 469-274-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-02-20 469-288-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MCKINNEY TX
2007-02-19 419-689-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BUCYRUS OH
2007-02-19 928-266-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FLAGSTAFF AZ
2007-02-16 330-639-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CANTON OH

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.