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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2019-11-04 562-640-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LA HABRA CA
2019-11-04 669-291-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LOS GATOS CA
2019-11-04 805-837-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2019-11-04 916-931-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RIO LINDA CA
2019-11-04 925-430-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WALNUT CRK CA
2019-11-04 925-738-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PLEASANTON CA
2019-11-04 971-900-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2019-10-30 254-271-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EASTLAND TX
2019-10-30 830-929-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BOERNE TX
2019-10-25 650-507-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2019-10-24 580-341-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARDMORE OK
2019-10-24 580-341-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARDMORE OK
2019-10-24 580-341-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARDMORE OK
2019-10-24 708-685-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LA GRANGE IL
2019-10-23 253-409-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2019-10-23 425-970-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 RENTON WA
2019-10-23 657-758-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ANAHEIM CA
2019-10-23 657-758-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ANAHEIM CA
2019-10-23 820-888-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SIMIVALLEY CA
2019-10-22 213-577-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2019-10-22 213-577-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2019-10-22 619-703-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2019-10-22 619-703-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2019-10-22 636-389-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ST CHARLES MO
2019-10-22 806-335-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AMARILLO TX
2019-10-22 806-640-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 AMARILLO TX
2019-10-22 830-890-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KERRVILLE TX
2019-10-22 909-577-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2019-10-22 909-716-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 POMONA CA
2019-10-22 909-966-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ONTARIO CA
2019-10-22 940-341-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WICHITAFLS TX
2019-10-21 209-494-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2019-10-21 385-343-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2019-10-21 385-343-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2019-10-21 385-343-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2019-10-21 469-743-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MIDLOTHIAN TX
2019-10-21 469-743-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MIDLOTHIAN TX
2019-10-21 708-968-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LA GRANGE IL
2019-10-21 708-998-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LA GRANGE IL
2019-10-21 808-452-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2019-10-21 808-452-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2019-10-21 808-460-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2019-10-21 808-460-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2019-10-21 808-765-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HILO HI
2019-10-18 970-844-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DURANGO CO
2019-10-17 385-306-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2019-10-17 385-306-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2019-10-17 385-306-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2019-10-17 510-630-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ELSBR-PINL CA
2019-10-16 209-238-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MODESTO 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.