NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

17 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 650
ONVOY, LLC - CA 11
T-MOBILE USA, INC. 4
BANDWIDTH.COM CLEC, LLC - CA 2
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
2016-03-07 650-203-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2016-03-07 650-203-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2016-03-07 650-203-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2016-03-07 650-832-4XXX 4000–4999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SNCRL-BLMT CA
2016-03-02 650-431-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SAN MATEO CA
2016-02-25 650-203-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C MT VIEW CA
2016-02-25 650-203-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MT VIEW CA
2016-02-23 650-206-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WOODSIDE CA
2016-02-11 650-750-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C HALFMOONBY CA
2016-02-11 650-750-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C HALFMOONBY CA
2016-02-10 650-662-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C LA HONDA CA
2016-02-10 650-662-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LA HONDA CA
2016-02-09 650-431-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2016-02-09 650-431-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2016-02-03 650-297-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C PESCADERO CA
2016-02-03 650-297-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C PESCADERO CA
2016-02-02 650-942-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MILLBRAE CA
2016-02-02 650-942-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C MILLBRAE CA
2016-01-29 650-770-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LOS ALTOS CA
2016-01-29 650-770-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LOS ALTOS CA
2016-01-28 650-203-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2016-01-27 650-830-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SNCRL-BLMT CA
2016-01-27 650-830-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C SNCRL-BLMT CA
2016-01-26 650-457-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SSNFRNCSCO CA
2016-01-26 650-457-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C SSNFRNCSCO CA
2016-01-26 650-480-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C REDWOOD CY CA
2016-01-26 650-480-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C REDWOOD CY CA
2016-01-26 650-695-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MT VIEW CA
2016-01-25 650-431-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SAN MATEO CA
2016-01-25 650-431-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SAN MATEO CA
2016-01-15 650-334-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2016-01-15 650-686-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MILLBRAE CA
2016-01-13 650-546-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2016-01-13 650-785-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2016-01-07 650-385-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDWOOD CY CA
2016-01-07 650-947-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LOS ALTOS CA
2016-01-06 650-297-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C PESCADERO CA
2016-01-04 650-203-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2015-12-31 650-431-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C SAN MATEO CA
2015-12-31 650-431-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C SAN MATEO CA
2015-12-31 650-546-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C PALO ALTO CA
2015-12-31 650-546-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C PALO ALTO CA
2015-12-29 650-395-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDWOOD CY CA
2015-12-15 650-457-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SSNFRNCSCO CA
2015-12-11 650-733-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PACIFICA CA
2015-12-10 650-382-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 PALO ALTO CA
2015-12-04 650-436-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2015-12-02 650-395-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDWOOD CY CA
2015-12-02 650-395-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDWOOD CY CA
2015-12-01 650-203-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.