NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

8 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 — NPA 575
T-MOBILE USA, INC. 6
ONVOY, LLC - NM 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 1
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
2006-09-06 575-308-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARTESIA NM
2006-09-01 575-502-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F SNA TERESA NM
2006-08-28 575-694-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 DEMING NM
2006-08-21 575-302-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARLSBAD NM
2006-08-15 575-202-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2006-08-15 575-637-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ROSWELL NM
2006-08-15 575-921-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2006-08-15 575-973-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 RUIDOSO NM
2006-08-02 575-303-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 RATON NM
2006-08-02 575-483-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SPRINGER NM
2006-08-01 575-602-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOBBS NM
2006-06-20 575-956-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 SILVERCITY NM
2006-06-19 575-956-7XXX 7000–7999Assigned METROPCS, INC. 5562 SILVERCITY NM
2006-06-19 575-973-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RUIDOSO NM
2006-06-06 575-613-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TAOS NM
2006-06-01 575-513-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARTESIA NM
2006-05-30 575-517-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 SOCORRO NM
2006-05-30 575-921-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2006-05-26 575-545-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DEMING NM
2006-05-22 575-602-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOBBS NM
2006-05-22 575-602-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOBBS NM
2006-05-22 575-602-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOBBS NM
2006-05-22 575-602-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOBBS NM
2006-05-03 575-519-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 SILVERCITY NM
2006-04-27 575-636-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2006-04-27 575-636-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2006-04-27 575-956-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 SILVERCITY NM
2006-04-27 575-973-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 RUIDOSO NM
2006-04-25 575-545-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 DEMING NM
2006-04-25 575-805-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAS CRUCES NM
2006-04-25 575-805-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAS CRUCES NM
2006-04-25 575-921-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2006-02-28 575-602-9XXX 9000–9999Assigned METROPCS, INC. 5562 HOBBS NM
2006-02-28 575-637-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ROSWELL NM
2006-02-15 575-302-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CARLSBAD NM
2006-02-15 575-680-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LAS CRUCES NM
2006-02-06 575-805-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAS CRUCES NM
2006-02-06 575-805-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAS CRUCES NM
2006-02-06 575-805-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAS CRUCES NM
2006-01-25 575-613-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TAOS NM
2006-01-13 575-202-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2006-01-13 575-202-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2006-01-13 575-313-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 SILVERCITY NM
2006-01-13 575-545-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 DEMING NM
2006-01-13 575-779-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 TAOS NM
2006-01-13 575-921-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2006-01-13 575-973-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 RUIDOSO NM
2006-01-03 575-219-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLOVIS NM
2006-01-03 575-308-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARTESIA NM
2005-12-01 575-791-3XXX 3000–3999Assigned METROPCS, INC. 5562 CLOVIS NM

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.