NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

24 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 747
ONVOY, LLC - CA 12
EXIANT COMMUNICATIONS LLC 5
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2
NEW CINGULAR WIRELESS PCS, LLC 2
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
2021-04-16 747-388-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
2021-04-16 747-388-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
2021-04-16 747-388-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
2021-04-16 747-388-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
2021-04-12 747-298-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C BRBN SNVY CA
2021-04-12 747-298-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BRBN SNVY CA
2021-04-12 747-298-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C BRBN SNVY CA
2021-04-12 747-298-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C BRBN SNVY CA
2021-04-12 747-724-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFN GRHL CA
2021-04-05 747-307-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GLENDALE CA
2021-04-05 747-307-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GLENDALE CA
2021-04-05 747-724-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SNFN GRHL CA
2021-04-05 747-724-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SNFN GRHL CA
2021-04-05 747-724-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SNFN GRHL CA
2021-03-23 747-244-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NORTHRIDGE CA
2021-03-22 747-305-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2021-03-22 747-305-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2021-03-22 747-305-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2021-03-22 747-305-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2021-03-22 747-305-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2021-03-17 747-288-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CANOGAPARK CA
2021-03-17 747-294-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFN SNFN CA
2021-03-17 747-294-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFN SNFN CA
2021-03-17 747-732-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFN SNFN CA
2021-03-17 747-944-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RESEDA CA
2021-02-25 747-302-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SUNLD TJNG CA
2021-02-25 747-302-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SUNLD TJNG CA
2021-02-22 747-895-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LACRSCENTA CA
2021-02-22 747-955-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFN PACM CA
2021-02-22 747-955-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SNFN PACM CA
2021-02-18 747-295-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D NO HOLLYWD CA
2021-02-18 747-297-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D GLENDALE CA
2021-02-18 747-377-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D VAN NUYS CA
2021-02-18 747-786-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D NORTHRIDGE CA
2021-02-18 747-955-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D SNFN PACM CA
2021-02-14 747-288-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CANOGAPARK CA
2021-02-11 747-588-8XXX 8000–8999Assigned FRACTEL, LLC 965H BRBN BRBN CA
2021-02-05 747-302-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SUNLD TJNG CA
2021-02-05 747-302-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SUNLD TJNG CA
2021-02-05 747-302-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SUNLD TJNG CA
2021-02-02 747-528-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J GLENDALE CA
2021-01-30 747-303-0XXX 0000–0999Assigned TELNYX LLC 073H AGOURA CA
2021-01-29 747-288-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
2021-01-29 747-288-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
2021-01-29 747-294-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2021-01-28 747-356-0XXX 0000–0999Assigned TELNYX LLC 073H NORTHRIDGE CA
2021-01-27 747-305-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2021-01-27 747-305-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2021-01-27 747-599-9XXX 9000–9999Assigned FRACTEL, LLC 965H AGOURA CA
2021-01-27 747-688-8XXX 8000–8999Assigned FRACTEL, LLC 965H GLENDALE 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.