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
2012-03-22 520-789-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2012-03-22 520-789-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2012-03-22 520-789-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2012-03-22 520-789-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2012-03-22 520-789-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2012-03-22 559-514-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MADERA CA
2012-03-22 559-537-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HANFORD CA
2012-03-22 940-641-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GAINESVL TX
2012-03-21 661-283-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BKFD MAIN CA
2012-03-21 805-332-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANTAMARIA CA
2012-03-21 805-361-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SANTAMARIA CA
2012-03-21 805-369-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PASOROBLES CA
2012-03-21 808-436-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2012-03-21 928-366-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 YUMA AZ
2012-03-20 918-537-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-537-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-537-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-537-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-537-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-537-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-608-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-608-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-608-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-616-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-709-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-709-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-709-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-709-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-709-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-709-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-709-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-709-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-20 918-709-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2012-03-19 510-600-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HAYWARD CA
2012-03-19 580-340-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARDMORE OK
2012-03-19 937-607-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2012-03-19 937-607-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2012-03-19 937-607-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2012-03-19 937-607-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2012-03-16 808-312-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2012-03-16 808-312-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2012-03-16 808-312-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2012-03-15 216-209-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-03-15 216-209-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-03-15 216-209-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-03-15 216-209-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-03-15 216-209-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-03-15 216-209-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-03-15 216-209-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-03-15 216-209-7XXX 7000–7999Assigned 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.