NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

66 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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. 66
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
2007-01-12 217-418-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2007-01-12 217-418-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2007-01-12 425-502-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2007-01-12 509-350-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MOSES LAKE WA
2007-01-12 661-852-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BKFD MAIN CA
2007-01-11 206-405-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2007-01-11 206-428-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2007-01-11 206-501-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2007-01-11 206-548-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2007-01-11 206-554-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2007-01-11 208-392-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BOISE ID
2007-01-11 323-405-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2007-01-11 424-205-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CMTN GRDN CA
2007-01-11 503-863-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2007-01-11 505-515-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2007-01-11 541-646-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MEDFORD OR
2007-01-11 541-787-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRANTSPASS OR
2007-01-11 562-271-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PICORIVERA CA
2007-01-11 575-741-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TAOS NM
2007-01-11 618-550-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 COLLINSVL IL
2007-01-11 618-550-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 COLLINSVL IL
2007-01-11 618-550-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 COLLINSVL IL
2007-01-11 661-247-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2007-01-11 702-789-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2007-01-11 702-789-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2007-01-11 760-274-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ENCINITAS CA
2007-01-11 801-616-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2007-01-11 801-616-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2007-01-11 801-928-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2007-01-11 818-491-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFN GRHL CA
2007-01-11 858-381-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 RNCHOSANFE CA
2007-01-11 909-961-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 RIALTO CA
2007-01-11 918-361-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2007-01-11 918-406-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2007-01-11 918-407-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2007-01-11 928-550-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SOMERTON AZ
2007-01-09 216-673-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2007-01-09 216-673-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2007-01-09 216-673-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2007-01-09 216-673-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2007-01-09 216-673-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2007-01-09 323-241-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2007-01-09 323-241-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2007-01-09 323-354-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2007-01-09 323-600-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2007-01-09 330-599-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 YOUNGSTOWN OH
2007-01-09 330-599-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 YOUNGSTOWN OH
2007-01-09 330-599-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 YOUNGSTOWN OH
2007-01-09 430-200-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TEXARKANA TX
2007-01-09 909-767-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 UPLAND CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.