NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

8 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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
2018-05-10 575-573-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F CRLSBACRNS NM
2018-05-10 575-579-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F HILLSBORO NM
2018-05-10 575-600-6XXX 6000–6999Assigned ONVOY, LLC - NM 206F LYBROOK NM
2018-05-08 575-570-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F CANJILON NM
2018-05-08 575-577-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F EL RITO NM
2018-05-08 575-900-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F VALLECITOS NM
2018-04-17 575-988-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 CARLSBAD NM
2018-04-17 575-988-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 CARLSBAD NM
2018-04-17 575-988-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 CARLSBAD NM
2018-04-10 575-530-3XXX 3000–3999Assigned METROPCS, INC. 5562 CLOVIS NM
2018-04-10 575-800-9XXX 9000–9999Assigned METROPCS, INC. 5562 LAS CRUCES NM
2018-03-15 575-733-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F RATON NM
2018-03-15 575-733-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F RATON NM
2018-02-28 575-552-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 HOBBS NM
2018-02-28 575-552-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 HOBBS NM
2018-02-21 575-725-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 CARLSBAD NM
2018-02-12 575-231-3XXX 3000–3999Assigned PEERLESS NETWORK OF NEW MEXICO, LLC - NM 377H ARTESIA NM
2018-02-12 575-425-6XXX 6000–6999Assigned PEERLESS NETWORK OF NEW MEXICO, LLC - NM 377H TAOS NM
2018-02-12 575-489-1XXX 1000–1999Assigned PEERLESS NETWORK OF NEW MEXICO, LLC - NM 377H ALAMOGORDO NM
2018-02-12 575-592-2XXX 2000–2999Assigned PEERLESS NETWORK OF NEW MEXICO, LLC - NM 377H DEMING NM
2018-02-12 575-747-2XXX 2000–2999Assigned PEERLESS NETWORK OF NEW MEXICO, LLC - NM 377H SOCORRO NM
2017-11-30 575-228-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F ALTO NM
2017-11-30 575-952-2XXX 2000–2999Assigned ONVOY, LLC - NM 206F TRUTHCQNCS NM
2017-11-21 575-221-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F EUNICE NM
2017-11-14 575-305-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SNA TERESA NM
2017-11-14 575-385-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F CUBA NM
2017-10-26 575-339-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2017-10-04 575-500-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F ROSWELL NM
2017-10-04 575-500-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F ROSWELL NM
2017-10-02 575-408-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 HOBBS NM
2017-10-02 575-605-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 HOBBS NM
2017-09-25 575-223-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TRUTHCQNCS NM
2017-09-25 575-250-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 GALLINA NM
2017-09-25 575-251-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 JAL NM
2017-09-25 575-255-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SAN YSIDRO NM
2017-09-25 575-414-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 LOVING NM
2017-09-25 575-659-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 LOVINGTON NM
2017-09-01 575-800-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F LAS CRUCES NM
2017-09-01 575-800-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F LAS CRUCES NM
2017-08-21 575-250-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F GALLINA NM
2017-08-21 575-251-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F JAL NM
2017-08-21 575-254-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F JEMEZ SPG NM
2017-08-21 575-255-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F SAN YSIDRO NM
2017-08-21 575-256-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F TIERRAAMRL NM
2017-08-15 575-209-2XXX 2000–2999Assigned ONVOY, LLC - NM 206F CHAMA NM
2017-08-15 575-221-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F EUNICE NM
2017-08-15 575-223-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F TRUTHCQNCS NM
2017-08-15 575-228-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F ALTO NM
2017-08-15 575-315-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F RUIDOSO NM
2017-08-15 575-385-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F CUBA NM

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.