NumberResearch Membership · Data 09/25/2026

Recent thousands-block assignments

68 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. 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
2011-03-28 501-235-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LITTLEROCK AR
2011-03-28 501-235-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LITTLEROCK AR
2011-03-28 501-255-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LITTLEROCK AR
2011-03-26 469-264-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ROCKWALL TX
2011-03-26 469-264-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ROCKWALL TX
2011-03-26 469-732-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 WAXAHACHIE TX
2011-03-26 469-732-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WAXAHACHIE TX
2011-03-26 469-777-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2011-03-25 319-529-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2011-03-25 405-628-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2011-03-25 405-628-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2011-03-25 405-628-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2011-03-25 405-628-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2011-03-25 405-875-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2011-03-25 405-875-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2011-03-25 405-875-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2011-03-25 405-875-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2011-03-25 442-999-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ESCONDIDO CA
2011-03-25 479-276-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2011-03-25 501-840-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BENTON AR
2011-03-25 608-477-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BARABOO WI
2011-03-25 918-718-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TAHLEQUAH OK
2011-03-25 918-718-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TAHLEQUAH OK
2011-03-24 304-917-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PRKRSBGZN1 WV
2011-03-24 304-926-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2011-03-24 304-926-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2011-03-24 681-945-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2011-03-24 681-945-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2011-03-23 217-719-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 JACKSONVL IL
2011-03-23 515-525-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 928-444-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BULLHEADCY AZ
2011-03-22 314-715-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-03-22 314-715-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-03-22 314-715-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-03-22 314-715-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-03-22 314-716-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-03-22 314-718-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-03-22 314-718-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-03-22 314-718-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-03-22 314-718-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-03-22 314-718-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LADUE MO

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.