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
2014-03-13 650-866-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SSNFRNCSCO CA
2014-03-11 650-285-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2014-03-11 650-285-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2014-03-11 650-452-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2014-03-11 650-452-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2014-03-04 650-720-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2014-03-03 650-437-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN MATEO CA
2014-03-03 650-437-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN MATEO CA
2014-02-28 650-864-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MT VIEW CA
2014-02-28 650-935-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LOS ALTOS CA
2014-02-27 650-887-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LOS ALTOS CA
2014-02-26 650-262-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PESCADERO CA
2014-02-26 650-294-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN MATEO CA
2014-02-26 650-524-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN MATEO CA
2014-02-24 650-285-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2014-02-14 650-713-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L HALFMOONBY CA
2014-02-11 650-562-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDWOOD CY CA
2014-02-05 650-900-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LOS ALTOS CA
2014-01-17 650-944-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2014-01-07 650-864-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 MT VIEW CA
2014-01-06 650-389-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2013-12-27 650-732-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MILLBRAE CA
2013-12-16 650-946-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LOS ALTOS CA
2013-12-12 650-419-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LA HONDA CA
2013-12-04 650-443-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MILLBRAE CA
2013-12-04 650-445-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2013-11-27 650-285-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2013-11-27 650-285-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2013-11-21 650-946-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LOS ALTOS CA
2013-11-15 650-440-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2013-11-14 650-416-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SSNFRNCSCO CA
2013-11-14 650-449-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC JUNPR CA
2013-11-14 650-449-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC JUNPR CA
2013-11-14 650-449-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC JUNPR CA
2013-11-14 650-491-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SSNFRNCSCO CA
2013-11-14 650-636-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SSNFRNCSCO CA
2013-11-14 650-761-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC JUNPR CA
2013-11-14 650-761-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC JUNPR CA
2013-11-14 650-761-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC JUNPR CA
2013-11-08 650-445-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SAN MATEO CA
2013-11-08 650-471-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LOS ALTOS CA
2013-11-07 650-666-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2013-11-06 650-817-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDWOOD CY CA
2013-11-05 650-285-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2013-11-05 650-649-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C REDWOOD CY CA
2013-11-05 650-679-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C REDWOOD CY CA
2013-11-05 650-900-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LOS ALTOS CA
2013-11-05 650-900-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LOS ALTOS CA
2013-11-01 650-729-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C HALFMOONBY CA
2013-11-01 650-729-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C HALFMOONBY 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.