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
2014-08-01 650-727-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2014-08-01 650-830-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNCRL-BLMT CA
2014-07-30 650-216-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDWOOD CY CA
2014-07-30 650-620-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNCRL-BLMT CA
2014-07-30 650-727-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2014-07-30 650-861-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2014-07-30 650-861-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2014-07-30 650-864-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MT VIEW CA
2014-07-21 650-665-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2014-07-21 650-665-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2014-07-16 650-713-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2014-07-15 650-549-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L REDWOOD CY CA
2014-07-15 650-622-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNCRL-BLMT CA
2014-07-14 650-469-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LOS ALTOS CA
2014-07-14 650-879-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C PESCADERO CA
2014-07-10 650-666-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2014-07-10 650-727-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2014-06-26 650-491-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SSNFRNCSCO CA
2014-06-26 650-491-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SSNFRNCSCO CA
2014-06-26 650-727-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2014-06-24 650-656-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2014-06-24 650-656-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2014-06-24 650-861-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L MT VIEW CA
2014-06-19 650-417-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MT VIEW CA
2014-06-19 650-419-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LA HONDA CA
2014-06-19 650-567-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 MT VIEW CA
2014-06-19 650-567-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 MT VIEW CA
2014-06-18 650-656-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J PALO ALTO CA
2014-06-17 650-392-0XXX 0000–0999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SSNFRNCSCO CA
2014-06-13 650-727-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2014-06-11 650-535-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MOSS BEACH CA
2014-06-10 650-597-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNCRL-BLMT CA
2014-06-10 650-597-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNCRL-BLMT CA
2014-06-10 650-597-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNCRL-BLMT CA
2014-06-10 650-935-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LOS ALTOS CA
2014-06-10 650-935-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LOS ALTOS CA
2014-06-05 650-656-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PALO ALTO CA
2014-06-04 650-549-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDWOOD CY CA
2014-06-04 650-549-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDWOOD CY CA
2014-06-04 650-656-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C PALO ALTO CA
2014-06-03 650-727-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN MATEO CA
2014-06-02 650-238-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SSNFRNCSCO CA
2014-05-30 650-437-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN MATEO CA
2014-05-30 650-437-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN MATEO CA
2014-05-30 650-437-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN MATEO CA
2014-05-30 650-445-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN MATEO CA
2014-05-21 650-426-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MT VIEW CA
2014-05-21 650-584-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MT VIEW CA
2014-05-14 650-445-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2014-05-13 650-268-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PESCADERO 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.