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
2019-10-22 650-537-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2019-10-22 650-538-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PESCADERO CA
2019-10-22 650-683-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WOODSIDE CA
2019-10-17 650-418-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2019-10-07 650-384-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2019-10-07 650-418-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2019-09-27 650-231-3XXX 3000–3999Assigned ASTOUND BROADBAND, LLC - CA 485E MILLBRAE CA
2019-09-18 650-677-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SSNFRNCSCO CA
2019-09-05 650-446-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WOODSIDE CA
2019-09-05 650-529-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WOODSIDE CA
2019-09-05 650-683-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WOODSIDE CA
2019-08-26 650-788-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2019-08-14 650-537-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MT VIEW CA
2019-08-14 650-788-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2019-08-09 650-414-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C REDWOOD CY CA
2019-08-09 650-449-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SNFC JUNPR CA
2019-08-09 650-761-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SNFC JUNPR CA
2019-08-09 650-761-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C SNFC JUNPR CA
2019-08-06 650-769-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNCRL-BLMT CA
2019-07-31 650-501-1XXX 1000–1999Assigned METROPCS, INC. 5562 PACIFICA CA
2019-07-24 650-988-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2019-07-18 650-514-0XXX 0000–0999Assigned METROPCS, INC. 5562 SAN MATEO CA
2019-07-12 650-788-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2019-07-09 650-459-9XXX 9000–9999Assigned TELNYX LLC 073H HALFMOONBY CA
2019-07-09 650-788-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2019-07-09 650-788-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2019-06-27 650-407-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2019-06-27 650-407-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2019-06-27 650-788-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2019-06-19 650-418-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SAN MATEO CA
2019-06-17 650-777-1XXX 1000–1999Assigned FRACTEL, LLC 965H MILLBRAE CA
2019-06-17 650-777-3XXX 3000–3999Assigned FRACTEL, LLC 965H MILLBRAE CA
2019-06-17 650-777-6XXX 6000–6999Assigned FRACTEL, LLC 965H MILLBRAE CA
2019-06-14 650-439-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2019-05-24 650-677-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SSNFRNCSCO CA
2019-05-23 650-398-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAN MATEO CA
2019-05-22 650-505-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2019-05-20 650-677-7XXX 7000–7999Assigned FRACTEL, LLC 965H SSNFRNCSCO CA
2019-05-14 650-459-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HALFMOONBY CA
2019-05-02 650-439-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2019-05-02 650-439-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2019-05-01 650-439-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2019-04-12 650-502-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SSNFRNCSCO CA
2019-04-11 650-405-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LOS ALTOS CA
2019-03-25 650-514-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2019-03-20 650-418-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2019-03-20 650-418-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2019-03-20 650-977-7XXX 7000–7999Assigned FRACTEL, LLC 965H PACIFICA CA
2019-03-19 650-439-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 MT VIEW CA
2019-03-19 650-699-9XXX 9000–9999Assigned FRACTEL, LLC 965H SAN MATEO 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.