NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

17 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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
2010-11-03 650-550-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C SNFC JUNPR CA
2010-11-03 650-900-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C LOS ALTOS CA
2010-10-29 650-741-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SSNFRNCSCO CA
2010-10-27 650-316-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MT VIEW CA
2010-10-27 650-319-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2010-10-27 650-458-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2010-10-27 650-779-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDWOOD CY CA
2010-10-21 650-763-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SSNFRNCSCO CA
2010-10-21 650-826-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SSNFRNCSCO CA
2010-10-21 650-834-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SSNFRNCSCO CA
2010-10-21 650-834-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SSNFRNCSCO CA
2010-10-21 650-835-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SSNFRNCSCO CA
2010-10-21 650-835-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SSNFRNCSCO CA
2010-10-21 650-878-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SSNFRNCSCO CA
2010-10-18 650-475-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2010-10-18 650-701-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDWOOD CY CA
2010-10-18 650-701-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDWOOD CY CA
2010-10-18 650-701-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDWOOD CY CA
2010-10-18 650-739-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2010-10-18 650-739-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2010-10-14 650-835-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SSNFRNCSCO CA
2010-10-14 650-995-0XXX 0000–0999Assigned METROPCS, INC. 5562 REDWOOD CY CA
2010-10-12 650-268-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PESCADERO CA
2010-10-12 650-419-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA HONDA CA
2010-10-01 650-288-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN MATEO CA
2010-10-01 650-381-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDWOOD CY CA
2010-10-01 650-534-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SSNFRNCSCO CA
2010-09-23 650-242-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SAN MATEO CA
2010-09-22 650-461-0XXX 0000–0999Assigned METROPCS, INC. 5562 PALO ALTO CA
2010-09-15 650-231-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MILLBRAE CA
2010-09-15 650-518-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LOS ALTOS CA
2010-09-08 650-690-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2010-09-08 650-690-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2010-08-30 650-239-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L MILLBRAE CA
2010-08-25 650-332-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WOODSIDE CA
2010-08-25 650-827-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SSNFRNCSCO CA
2010-08-18 650-223-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2010-08-18 650-223-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2010-08-18 650-741-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SSNFRNCSCO CA
2010-08-17 650-919-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MT VIEW CA
2010-08-12 650-471-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LOS ALTOS CA
2010-08-12 650-471-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LOS ALTOS CA
2010-08-12 650-471-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LOS ALTOS CA
2010-08-12 650-492-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LOS ALTOS CA
2010-08-10 650-319-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PALO ALTO CA
2010-08-10 650-557-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PACIFICA CA
2010-08-09 650-479-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HALFMOONBY CA
2010-08-09 650-479-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HALFMOONBY CA
2010-08-09 650-479-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HALFMOONBY CA
2010-08-09 650-479-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HALFMOONBY CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.