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
2016-07-25 650-748-5XXX 5000–5999Assigned HD CARRIER LLC 321J LA HONDA CA
2016-07-25 650-748-6XXX 6000–6999Assigned HD CARRIER LLC 321J LA HONDA CA
2016-07-25 650-748-7XXX 7000–7999Assigned HD CARRIER LLC 321J LA HONDA CA
2016-07-25 650-748-8XXX 8000–8999Assigned HD CARRIER LLC 321J LA HONDA CA
2016-07-25 650-795-7XXX 7000–7999Assigned HD CARRIER LLC 321J LA HONDA CA
2016-07-25 650-795-8XXX 8000–8999Assigned HD CARRIER LLC 321J LA HONDA CA
2016-07-25 650-795-9XXX 9000–9999Assigned HD CARRIER LLC 321J LA HONDA CA
2016-07-21 650-484-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SAN MATEO CA
2016-07-21 650-484-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SAN MATEO CA
2016-07-19 650-750-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2016-07-19 650-750-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2016-07-19 650-750-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2016-07-15 650-680-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LOS ALTOS CA
2016-07-15 650-680-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LOS ALTOS CA
2016-07-15 650-680-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LOS ALTOS CA
2016-07-15 650-680-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LOS ALTOS CA
2016-07-12 650-410-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C SSNFRNCSCO CA
2016-07-12 650-410-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SSNFRNCSCO CA
2016-07-12 650-480-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C REDWOOD CY CA
2016-07-12 650-481-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C REDWOOD CY CA
2016-07-12 650-499-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C MT VIEW CA
2016-07-12 650-499-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C MT VIEW CA
2016-07-12 650-499-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C MT VIEW CA
2016-07-12 650-503-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C REDWOOD CY CA
2016-07-08 650-484-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2016-07-06 650-989-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SSNFRNCSCO CA
2016-07-05 650-250-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2016-07-05 650-250-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2016-07-05 650-381-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDWOOD CY CA
2016-07-05 650-727-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2016-06-27 650-410-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SSNFRNCSCO CA
2016-06-27 650-480-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDWOOD CY CA
2016-06-24 650-499-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2016-06-22 650-436-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J SAN MATEO CA
2016-06-15 650-495-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2016-06-15 650-495-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2016-06-14 650-509-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2016-06-14 650-509-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2016-06-14 650-509-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2016-06-14 650-770-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LOS ALTOS CA
2016-06-13 650-250-0XXX 0000–0999Assigned TWILIO INTERNATIONAL, INC. 506J PALO ALTO CA
2016-06-13 650-250-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PALO ALTO CA
2016-06-10 650-836-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PESCADERO CA
2016-06-10 650-836-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PESCADERO CA
2016-06-10 650-836-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PESCADERO CA
2016-06-10 650-836-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PESCADERO CA
2016-06-10 650-836-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PESCADERO CA
2016-06-10 650-836-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PESCADERO CA
2016-06-10 650-836-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PESCADERO CA
2016-06-10 650-836-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 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.