NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

29 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 551
ONVOY, LLC - NJ 12
NEW CINGULAR WIRELESS PCS, LLC - DC 11
CSC WIRELESS, LLC 3
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 3
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
2020-11-27 551-307-0XXX 0000–0999Assigned ONVOY, LLC - NJ 637C JERSEYCITY NJ
2020-11-27 551-307-1XXX 1000–1999Assigned ONVOY, LLC - NJ 637C JERSEYCITY NJ
2020-11-27 551-307-5XXX 5000–5999Assigned ONVOY, LLC - NJ 637C JERSEYCITY NJ
2020-11-27 551-307-7XXX 7000–7999Assigned ONVOY, LLC - NJ 637C JERSEYCITY NJ
2020-11-24 551-315-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 RAMSEY NJ
2020-11-24 551-315-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 RAMSEY NJ
2020-11-20 551-307-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 JERSEYCITY NJ
2020-11-11 551-312-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2020-11-11 551-312-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2020-11-11 551-312-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2020-11-06 551-271-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2020-10-29 551-501-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F ENGLEWOOD NJ
2020-10-29 551-501-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F ENGLEWOOD NJ
2020-10-26 551-290-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 KEARNY NJ
2020-10-22 551-310-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F WESTWOOD NJ
2020-10-22 551-310-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F WESTWOOD NJ
2020-10-21 551-430-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 JERSEYCITY NJ
2020-10-15 551-348-6XXX 6000–6999Assigned FRACTEL, LLC 965H LEONIA NJ
2020-10-15 551-388-8XXX 8000–8999Assigned FRACTEL, LLC 965H BAYONNE NJ
2020-10-15 551-600-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WYCKOFF NJ
2020-10-15 551-786-7XXX 7000–7999Assigned FRACTEL, LLC 965H UNION CITY NJ
2020-10-15 551-946-3XXX 3000–3999Assigned FRACTEL, LLC 965H HACKENSACK NJ
2020-10-02 551-309-1XXX 1000–1999Assigned NUSO, LLC 478J JERSEYCITY NJ
2020-09-30 551-430-7XXX 7000–7999Assigned PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F JERSEYCITY NJ
2020-09-28 551-430-4XXX 4000–4999Assigned ONVOY, LLC - NJ 637C JERSEYCITY NJ
2020-09-28 551-430-5XXX 5000–5999Assigned ONVOY, LLC - NJ 637C JERSEYCITY NJ
2020-09-25 551-271-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2020-09-25 551-271-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2020-09-25 551-271-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2020-09-25 551-271-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2020-09-24 551-271-1XXX 1000–1999Assigned ONVOY, LLC - NJ 637C BAYONNE NJ
2020-09-24 551-271-2XXX 2000–2999Assigned ONVOY, LLC - NJ 637C BAYONNE NJ
2020-09-24 551-288-2XXX 2000–2999Assigned ONVOY, LLC - NJ 637C CLOSTER NJ
2020-09-24 551-288-8XXX 8000–8999Assigned ONVOY, LLC - NJ 637C CLOSTER NJ
2020-09-24 551-296-9XXX 9000–9999Assigned ONVOY, LLC - NJ 637C OAKLAND NJ
2020-09-24 551-305-2XXX 2000–2999Assigned ONVOY, LLC - NJ 637C RIDGEWOOD NJ
2020-09-24 551-305-7XXX 7000–7999Assigned ONVOY, LLC - NJ 637C RIDGEWOOD NJ
2020-09-24 551-310-4XXX 4000–4999Assigned ONVOY, LLC - NJ 637C WESTWOOD NJ
2020-09-24 551-310-5XXX 5000–5999Assigned ONVOY, LLC - NJ 637C WESTWOOD NJ
2020-09-23 551-336-2XXX 2000–2999Assigned ONVOY, LLC - NJ 637C HACKENSACK NJ
2020-09-23 551-336-3XXX 3000–3999Assigned ONVOY, LLC - NJ 637C HACKENSACK NJ
2020-09-21 551-210-7XXX 7000–7999Assigned ONVOY, LLC - NJ 637C DUMONT NJ
2020-09-21 551-239-7XXX 7000–7999Assigned ONVOY, LLC - NJ 637C CLIFFSIDE NJ
2020-09-21 551-299-5XXX 5000–5999Assigned ONVOY, LLC - NJ 637C FAIR LAWN NJ
2020-09-21 551-299-7XXX 7000–7999Assigned ONVOY, LLC - NJ 637C FAIR LAWN NJ
2020-09-21 551-308-6XXX 6000–6999Assigned ONVOY, LLC - NJ 637C RAMSEY NJ
2020-09-21 551-308-7XXX 7000–7999Assigned ONVOY, LLC - NJ 637C RAMSEY NJ
2020-09-21 551-314-6XXX 6000–6999Assigned ONVOY, LLC - NJ 637C CLIFFSIDE NJ
2020-09-21 551-345-8XXX 8000–8999Assigned ONVOY, LLC - NJ 637C HASBROKHTS NJ
2020-09-21 551-345-9XXX 9000–9999Assigned ONVOY, LLC - NJ 637C HASBROKHTS NJ

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.