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
2018-10-02 650-398-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SAN MATEO CA
2018-10-02 650-402-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2018-10-02 650-402-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2018-09-28 650-832-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNCRL-BLMT CA
2018-09-24 650-337-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PESCADERO CA
2018-09-24 650-398-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAN MATEO CA
2018-09-21 650-448-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2018-09-21 650-880-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2018-09-21 650-880-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2018-09-21 650-880-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2018-09-21 650-880-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MT VIEW CA
2018-09-12 650-880-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2018-08-31 650-880-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MT VIEW CA
2018-08-30 650-402-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2018-08-30 650-402-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2018-08-29 650-337-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C PESCADERO CA
2018-08-29 650-407-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C PALO ALTO CA
2018-08-29 650-407-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C PALO ALTO CA
2018-08-21 650-379-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SSNFRNCSCO CA
2018-08-15 650-407-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2018-08-15 650-407-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2018-08-15 650-407-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2018-08-08 650-420-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PACIFICA CA
2018-07-20 650-769-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNCRL-BLMT CA
2018-07-20 650-880-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MT VIEW CA
2018-07-09 650-398-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SAN MATEO CA
2018-07-09 650-398-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SAN MATEO CA
2018-06-26 650-622-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNCRL-BLMT CA
2018-06-07 650-709-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2018-06-07 650-709-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2018-06-07 650-709-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2018-05-30 650-379-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7174 SSNFRNCSCO CA
2018-05-10 650-407-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2018-05-09 650-405-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LOS ALTOS CA
2018-05-09 650-709-0XXX 0000–0999Assigned AIRESPRING, INC. 996H PALO ALTO CA
2018-05-04 650-232-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNCRL-BLMT CA
2018-04-23 650-880-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2018-04-23 650-880-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2018-04-10 650-505-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2018-04-10 650-505-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2018-04-06 650-898-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PACIFICA CA
2018-03-26 650-398-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SAN MATEO CA
2018-03-26 650-505-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2018-03-26 650-505-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2018-03-26 650-505-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2018-03-26 650-505-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2018-03-22 650-880-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MT VIEW CA
2018-03-19 650-801-8XXX 8000–8999Assigned ASTOUND BROADBAND, LLC - CA 485E SNCRL-BLMT CA
2018-03-02 650-505-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2018-03-02 650-898-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PACIFICA 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.