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
2014-05-13 650-487-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LA HONDA CA
2014-05-13 650-535-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MOSS BEACH CA
2014-05-12 650-272-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PALO ALTO CA
2014-04-29 650-278-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SSNFRNCSCO CA
2014-04-29 650-314-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2014-04-29 650-336-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2014-04-29 650-386-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2014-04-29 650-542-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDWOOD CY CA
2014-04-29 650-542-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDWOOD CY CA
2014-04-29 650-542-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDWOOD CY CA
2014-04-29 650-569-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDWOOD CY CA
2014-04-29 650-590-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNCRL-BLMT CA
2014-04-29 650-670-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDWOOD CY CA
2014-04-29 650-771-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDWOOD CY CA
2014-04-29 650-817-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDWOOD CY CA
2014-04-29 650-825-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SSNFRNCSCO CA
2014-04-29 650-826-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SSNFRNCSCO CA
2014-04-29 650-935-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LOS ALTOS CA
2014-04-25 650-625-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MT VIEW CA
2014-04-25 650-826-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SSNFRNCSCO CA
2014-04-24 650-763-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SSNFRNCSCO CA
2014-04-23 650-730-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNCRL-BLMT CA
2014-04-18 650-443-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MILLBRAE CA
2014-04-18 650-443-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MILLBRAE CA
2014-04-18 650-446-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WOODSIDE CA
2014-04-18 650-446-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WOODSIDE CA
2014-04-18 650-560-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HALFMOONBY CA
2014-04-18 650-623-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MT VIEW CA
2014-04-18 650-684-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MILLBRAE CA
2014-04-18 650-713-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HALFMOONBY CA
2014-04-18 650-733-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PACIFICA CA
2014-04-18 650-733-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PACIFICA CA
2014-04-18 650-864-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MT VIEW CA
2014-04-16 650-564-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2014-04-16 650-623-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2014-04-14 650-437-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2014-04-14 650-437-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2014-04-11 650-656-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2014-04-11 650-656-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2014-04-10 650-730-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNCRL-BLMT CA
2014-04-07 650-656-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2014-04-04 650-634-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C SSNFRNCSCO CA
2014-04-03 650-866-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SSNFRNCSCO CA
2014-03-25 650-437-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SAN MATEO CA
2014-03-19 650-694-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MT VIEW CA
2014-03-17 650-529-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WOODSIDE CA
2014-03-13 650-437-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2014-03-13 650-437-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2014-03-13 650-830-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNCRL-BLMT CA
2014-03-13 650-852-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 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.