NumberResearch Membership · Data 09/25/2026

Recent thousands-block assignments

69 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/25/2026

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. 69
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2019-12-05 360-375-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SAN JUAN WA
2019-12-05 619-856-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 NATIONALCY CA
2019-12-05 951-855-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 TEMSCL CNY CA
2019-12-05 951-855-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TEMSCL CNY CA
2019-11-26 650-942-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MILLBRAE CA
2019-11-25 480-955-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-11-25 480-955-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-11-25 480-955-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-11-25 480-955-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-11-25 480-955-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-11-25 480-955-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-11-22 530-560-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 REDDING CA
2019-11-20 720-687-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2019-11-20 720-687-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2019-11-20 720-687-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2019-11-20 720-687-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2019-11-20 720-687-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2019-11-20 720-687-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2019-11-14 209-285-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MERCED CA
2019-11-14 234-430-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WARREN OH
2019-11-14 234-430-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WARREN OH
2019-11-14 442-294-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 RIDGECREST CA
2019-11-14 562-399-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2019-11-14 562-399-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2019-11-14 562-576-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PICORIVERA CA
2019-11-14 707-740-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EUREKA CA
2019-11-14 707-828-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BENICIA CA
2019-11-14 719-680-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TRINIDAD CO
2019-11-14 719-680-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TRINIDAD CO
2019-11-14 719-859-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TRINIDAD CO
2019-11-14 719-967-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TRINIDAD CO
2019-11-14 719-967-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TRINIDAD CO
2019-11-14 719-967-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TRINIDAD CO
2019-11-14 720-673-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2019-11-14 720-673-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2019-11-14 720-673-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2019-11-14 720-673-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2019-11-14 720-678-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2019-11-14 720-678-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2019-11-14 720-678-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2019-11-08 213-468-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2019-11-08 510-767-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FRNK MAIN CA
2019-11-07 360-404-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2019-11-06 951-855-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TEMSCL CNY CA
2019-11-04 209-310-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LODI CA
2019-11-04 424-328-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LOMITA CA
2019-11-04 424-409-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 REDONDO CA
2019-11-04 442-309-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BARSTOW CA
2019-11-04 458-232-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 KLAMATHFLS OR
2019-11-04 530-499-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PLVL WEST CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.