NumberResearch Membership · Data 09/27/2026

Recent thousands-block assignments

68 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/27/2026

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. 68
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
2013-12-10 602-651-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-12-10 602-681-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-12-10 602-774-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-12-10 602-800-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-12-10 602-800-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-12-10 623-999-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-12-10 623-999-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-12-10 623-999-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-12-10 636-385-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 OFALLON MO
2013-12-09 424-341-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CULVERCITY CA
2013-12-09 510-736-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HAYWARD CA
2013-12-09 661-447-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BKFD MAIN CA
2013-12-09 661-855-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2013-12-09 951-376-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLINGTON CA
2013-12-06 254-661-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 COPPERASCV TX
2013-12-06 254-661-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 COPPERASCV TX
2013-12-06 254-661-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 COPPERASCV TX
2013-12-06 432-803-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ODESSA TX
2013-12-06 432-803-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ODESSA TX
2013-12-06 505-484-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ESPANOLA NM
2013-12-06 509-919-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2013-12-06 512-400-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BUDA TX
2013-12-06 512-400-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BUDA TX
2013-12-06 541-936-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALBANY OR
2013-12-06 575-263-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HOBBS NM
2013-12-06 714-592-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BREA CA
2013-12-06 760-818-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BARSTOW CA
2013-12-06 916-385-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELK GROVE CA
2013-12-06 940-273-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DECATUR TX
2013-12-06 940-273-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DECATUR TX
2013-12-06 970-459-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DURANGO CO
2013-12-05 213-294-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2013-12-05 253-329-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2013-12-05 424-335-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2013-12-05 424-335-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2013-12-05 425-435-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2013-12-05 425-435-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2013-12-05 510-480-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELSBR-PINL CA
2013-12-05 510-646-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OKLD BKLY CA
2013-12-05 510-680-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 RICHMOND CA
2013-12-05 925-428-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2013-12-04 209-407-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TRACY CA
2013-12-04 310-957-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 INGLEWOOD CA
2013-12-04 510-320-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 FRNK MAIN CA
2013-12-04 559-391-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 REEDLEY CA
2013-12-04 626-986-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LA PUENTE CA
2013-12-04 650-443-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MILLBRAE CA
2013-12-04 669-225-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SNJS WEST CA
2013-12-04 707-389-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FRFLD-SUIS CA
2013-12-04 708-973-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICAGOHTS IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.