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
2012-04-06 650-649-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDWOOD CY CA
2012-04-02 650-518-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LOS ALTOS CA
2012-03-14 650-887-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LOS ALTOS CA
2012-03-14 650-889-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HALFMOONBY CA
2012-03-08 650-889-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2012-02-27 650-389-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN MATEO CA
2012-02-27 650-525-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN MATEO CA
2012-02-14 650-268-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PESCADERO CA
2012-02-14 650-426-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MT VIEW CA
2012-02-14 650-694-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C MT VIEW CA
2012-02-10 650-332-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 WOODSIDE CA
2012-02-10 650-513-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2012-02-10 650-720-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 HALFMOONBY CA
2012-02-07 650-933-9XXX 9000–9999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MT VIEW CA
2012-01-24 650-425-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2012-01-24 650-627-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2012-01-20 650-265-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MT VIEW CA
2012-01-18 650-808-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2012-01-12 650-267-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SSNFRNCSCO CA
2012-01-06 650-800-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C PALO ALTO CA
2012-01-06 650-800-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C PALO ALTO CA
2011-12-27 650-433-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2011-12-15 650-262-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PESCADERO CA
2011-12-15 650-542-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDWOOD CY CA
2011-12-15 650-763-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SSNFRNCSCO CA
2011-12-14 650-433-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PALO ALTO CA
2011-12-14 650-730-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNCRL-BLMT CA
2011-11-28 650-396-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C MT VIEW CA
2011-11-21 650-492-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LOS ALTOS CA
2011-11-17 650-425-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2011-11-14 650-872-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SSNFRNCSCO CA
2011-11-11 650-489-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNCRL-BLMT CA
2011-11-04 650-597-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J SNCRL-BLMT CA
2011-10-27 650-999-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C PALO ALTO CA
2011-10-26 650-863-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2011-10-26 650-918-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2011-10-26 650-933-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MT VIEW CA
2011-10-19 650-999-1XXX 1000–1999Assigned METROPCS, INC. 5562 PALO ALTO CA
2011-10-14 650-282-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MT VIEW CA
2011-10-14 650-282-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MT VIEW CA
2011-10-05 650-603-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2011-10-04 650-933-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2011-09-27 650-999-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PALO ALTO CA
2011-09-19 650-999-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 PALO ALTO CA
2011-09-13 650-258-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 PALO ALTO CA
2011-09-13 650-258-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 PALO ALTO CA
2011-09-13 650-258-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 PALO ALTO CA
2011-09-13 650-258-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 PALO ALTO CA
2011-09-13 650-258-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 PALO ALTO CA
2011-09-13 650-258-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 PALO ALTO 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.