NumberResearch Membership · Data 09/24/2026

Recent thousands-block assignments

69 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. 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
2020-05-26 520-420-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2020-05-26 520-420-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2020-05-26 909-955-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 RIALTO CA
2020-05-22 360-919-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2020-05-22 430-529-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SULPHURSPG TX
2020-05-22 509-741-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WENATCHEE WA
2020-05-22 805-803-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SANTAMARIA CA
2020-05-22 805-803-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SANTAMARIA CA
2020-05-22 820-600-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PISMOBEACH CA
2020-05-22 831-220-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MONTEREY CA
2020-05-21 620-888-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HUTCHINSON KS
2020-05-07 951-519-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TEMSCL CNY CA
2020-05-07 951-519-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TEMSCL CNY CA
2020-05-06 209-660-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 JACKSON CA
2020-05-06 425-336-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RENTON WA
2020-05-06 541-300-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 THE DALLES OR
2020-05-06 831-297-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HOLLISTER CA
2020-05-06 831-348-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WATSONVL CA
2020-05-06 831-356-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SALINAS CA
2020-05-06 831-356-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SALINAS CA
2020-05-06 971-363-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST HELENS OR
2020-05-01 805-792-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ATASCADERO CA
2020-04-29 970-844-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DURANGO CO
2020-04-29 970-844-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DURANGO CO
2020-04-27 530-886-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2020-04-27 539-234-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TAHLEQUAH OK
2020-04-27 539-325-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2020-04-27 909-791-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2020-04-24 505-458-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GALLUP NM
2020-04-15 309-489-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GENESEO IL
2020-04-15 530-782-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 REDDING CA
2020-04-14 385-310-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2020-04-14 385-310-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2020-04-14 940-279-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LAKEDALLAS TX
2020-04-09 949-539-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TRABUCO CA
2020-04-09 971-353-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLACKAMAS OR
2020-04-07 360-919-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2020-04-07 925-592-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MORAGA CA
2020-04-06 928-216-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PARKER AZ
2020-04-01 501-403-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BENTON AR
2020-04-01 501-409-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BENTON AR
2020-04-01 501-409-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BENTON AR
2020-04-01 563-551-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DAVENPORT IA
2020-04-01 870-716-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HARRISON AR
2020-04-01 870-716-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HARRISON AR
2020-03-31 608-707-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MADISON WI
2020-03-30 213-376-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 11 CA
2020-03-30 213-376-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LSAN DA 11 CA
2020-03-30 213-376-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 11 CA
2020-03-30 213-398-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 13 CA

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.