NumberResearch Membership · Data 09/26/2026

Recent thousands-block assignments

68 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026

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
2012-02-22 330-708-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELIVERPOOL OH
2012-02-22 415-299-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SAN RAFAEL CA
2012-02-22 425-404-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2012-02-22 425-905-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2012-02-22 479-802-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BENTONVL AR
2012-02-22 580-514-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2012-02-22 580-514-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2012-02-22 626-248-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2012-02-22 626-248-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2012-02-22 626-586-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2012-02-22 626-632-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2012-02-22 626-632-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2012-02-22 870-945-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FORREST CY AR
2012-02-22 918-320-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MIAMI OK
2012-02-22 928-216-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PARKER AZ
2012-02-21 319-486-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2012-02-21 319-499-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 IOWA CITY IA
2012-02-21 323-358-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2012-02-21 323-358-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2012-02-21 405-328-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHANDLER OK
2012-02-21 405-328-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHANDLER OK
2012-02-21 408-508-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CAMPBELL CA
2012-02-21 408-508-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CAMPBELL CA
2012-02-21 408-508-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CAMPBELL CA
2012-02-21 515-505-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2012-02-21 520-230-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2012-02-21 520-369-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2012-02-21 563-484-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DAVENPORT IA
2012-02-21 636-385-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 OFALLON MO
2012-02-21 636-385-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OFALLON MO
2012-02-21 636-649-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 UNION MO
2012-02-17 314-287-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2012-02-17 314-287-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2012-02-17 314-287-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2012-02-17 479-601-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FAYETTEVL AR
2012-02-17 479-800-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 FAYETTEVL AR
2012-02-17 479-800-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FAYETTEVL AR
2012-02-17 479-876-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BENTONVL AR
2012-02-17 580-491-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PONCA CITY OK
2012-02-17 661-800-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BKFD MAIN CA
2012-02-17 808-494-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HILO HI
2012-02-17 808-494-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 HILO HI
2012-02-17 951-322-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2012-02-17 951-322-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2012-02-16 216-219-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-02-16 216-377-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-02-16 216-776-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-02-16 216-797-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-02-16 216-854-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-02-16 216-902-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.