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
2012-02-13 575-707-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F RATON NM
2012-02-08 575-639-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAS CRUCES NM
2012-01-30 575-587-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 PENASCO NM
2012-01-26 575-812-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA NM-LLC 450C ALAMOGORDO NM
2012-01-19 575-567-1XXX 1000–1999Assigned INTERACTIVE NETWORKS CORPORATION -NM 167F DEMING NM
2012-01-10 575-315-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 RUIDOSO NM
2012-01-06 575-376-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F CIMARRON NM
2011-12-29 575-586-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F QUESTA NM
2011-12-05 575-343-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 HATCH NM
2011-12-01 575-936-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NM 7464 DEMING NM
2011-11-22 575-495-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2011-11-22 575-551-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2011-10-28 575-754-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F RED RIVER NM
2011-10-06 575-342-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F SILVERCITY NM
2011-10-04 575-376-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F CIMARRON NM
2011-10-04 575-448-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F CHAPARRAL NM
2011-10-04 575-483-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F SPRINGER NM
2011-10-04 575-586-6XXX 6000–6999Assigned ONVOY, LLC - NM 206F QUESTA NM
2011-10-04 575-618-4XXX 4000–4999Assigned ONVOY, LLC - NM 206F ANTHONY NM
2011-10-04 575-754-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F RED RIVER NM
2011-10-04 575-904-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F CANNON AFB NM
2011-10-04 575-912-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F BAYARD NM
2011-09-30 575-268-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F CLOVIS NM
2011-09-30 575-936-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F DEMING NM
2011-09-15 575-224-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F TAOS NM
2011-09-12 575-268-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA NM-LLC 450C CLOVIS NM
2011-09-12 575-323-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA NM-LLC 450C LAS CRUCES NM
2011-09-06 575-708-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F TUCUMCARI NM
2011-08-25 575-268-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 CLOVIS NM
2011-08-18 575-689-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CARLSBAD NM
2011-08-10 575-323-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J LAS CRUCES NM
2011-08-09 575-825-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 PORTALES NM
2011-08-09 575-942-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOBBS NM
2011-08-09 575-942-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOBBS NM
2011-08-05 575-291-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ROSWELL NM
2011-08-02 575-322-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F SOCORRO NM
2011-07-28 575-224-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J TAOS NM
2011-07-28 575-347-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ROSWELL NM
2011-07-28 575-825-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PORTALES NM
2011-07-28 575-912-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BAYARD NM
2011-07-28 575-936-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J DEMING NM
2011-07-28 575-956-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SILVERCITY NM
2011-07-12 575-502-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NM 7464 SNA TERESA NM
2011-06-09 575-315-1XXX 1000–1999Assigned VALOR TELECOM TX,LP-NM #2 DBA WINDSTREAM COMM SW 1193 RUIDOSO NM
2011-06-08 575-997-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 SNA TERESA NM
2011-06-08 575-997-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 SNA TERESA NM
2011-06-06 575-704-3XXX 3000–3999Assigned VALOR TELECOM TX,LP-NM #1 DBA WINDSTREAM COMM SW 1164 LOVINGTON NM
2011-05-31 575-268-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F CLOVIS NM
2011-05-31 575-323-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F LAS CRUCES NM
2011-05-31 575-495-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ALAMOGORDO 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.