NumberResearch Membership · Data 09/24/2026

Recent thousands-block assignments

70 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/24/2026

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. 70
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
2020-10-23 831-348-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WATSONVL CA
2020-10-23 831-529-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SANTA CRUZ CA
2020-10-23 951-528-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TEMECULA CA
2020-10-23 951-528-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TEMECULA CA
2020-10-23 971-977-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2020-10-23 971-977-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2020-10-22 425-470-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2020-10-22 425-470-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2020-10-20 209-741-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2020-10-20 253-361-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2020-10-20 253-361-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2020-10-20 253-368-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2020-10-20 253-368-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2020-10-20 425-477-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ISSAQUAH WA
2020-10-20 425-477-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ISSAQUAH WA
2020-10-20 469-469-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2020-10-20 469-592-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2020-10-20 469-592-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2020-10-20 469-592-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2020-10-20 469-756-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2020-10-20 469-756-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2020-10-20 469-756-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2020-10-20 469-756-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2020-10-20 469-756-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2020-10-20 469-756-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2020-10-20 469-756-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2020-10-20 469-756-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2020-10-20 469-756-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2020-10-20 580-485-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PONCA CITY OK
2020-10-20 580-485-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PONCA CITY OK
2020-10-20 661-545-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DELANO CA
2020-10-20 707-854-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EUREKA CA
2020-10-20 707-854-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EUREKA CA
2020-10-20 909-905-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLAREMONT CA
2020-10-20 909-905-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLAREMONT CA
2020-10-20 916-839-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RSVL MAIN CA
2020-10-20 916-839-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RSVL MAIN CA
2020-10-20 916-885-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SCRM NORTH CA
2020-10-15 209-717-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MANTECA CA
2020-10-15 341-666-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 OKLD TRNID CA
2020-10-15 341-666-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OKLD TRNID CA
2020-10-15 360-488-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2020-10-15 408-754-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNJS SOUTH CA
2020-10-15 408-754-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNJS SOUTH CA
2020-10-15 424-446-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2020-10-15 424-446-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2020-10-15 442-238-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2020-10-15 442-238-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2020-10-15 458-223-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LEBANON OR
2020-10-15 509-312-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.