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
2019-10-07 551-261-3XXX 3000–3999Assigned VONAGE AMERICA LLC 197D JERSEYCITY NJ
2019-09-27 551-219-5XXX 5000–5999Assigned TELNYX LLC 073H HACKENSACK NJ
2019-09-27 551-400-3XXX 3000–3999Assigned ONVOY, LLC - NJ 637C CRAGMERE NJ
2019-09-27 551-400-4XXX 4000–4999Assigned ONVOY, LLC - NJ 637C CRAGMERE NJ
2019-09-27 551-400-5XXX 5000–5999Assigned ONVOY, LLC - NJ 637C CRAGMERE NJ
2019-09-27 551-400-6XXX 6000–6999Assigned ONVOY, LLC - NJ 637C CRAGMERE NJ
2019-09-27 551-400-7XXX 7000–7999Assigned ONVOY, LLC - NJ 637C CRAGMERE NJ
2019-09-27 551-400-8XXX 8000–8999Assigned ONVOY, LLC - NJ 637C CRAGMERE NJ
2019-09-10 551-286-0XXX 0000–0999Assigned CSC WIRELESS, LLC 425J HACKENSACK NJ
2019-09-10 551-286-4XXX 4000–4999Assigned CSC WIRELESS, LLC 425J HACKENSACK NJ
2019-09-10 551-286-5XXX 5000–5999Assigned CSC WIRELESS, LLC 425J HACKENSACK NJ
2019-09-10 551-430-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 JERSEYCITY NJ
2019-08-28 551-287-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HACKENSACK NJ
2019-08-16 551-400-2XXX 2000–2999Assigned PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F CRAGMERE NJ
2019-08-14 551-306-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 UNION CITY NJ
2019-07-29 551-305-5XXX 5000–5999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 RIDGEWOOD NJ
2019-07-29 551-305-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 RIDGEWOOD NJ
2019-07-19 551-400-0XXX 0000–0999Assigned ONVOY, LLC - NJ 637C CRAGMERE NJ
2019-07-19 551-400-1XXX 1000–1999Assigned ONVOY, LLC - NJ 637C CRAGMERE NJ
2019-07-18 551-303-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F CLOSTER NJ
2019-07-12 551-370-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIDGEWOOD NJ
2019-07-12 551-370-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIDGEWOOD NJ
2019-07-11 551-292-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 KEARNY NJ
2019-07-02 551-285-0XXX 0000–0999Assigned ONVOY, LLC - NJ 637C RUTHERFORD NJ
2019-07-02 551-285-1XXX 1000–1999Assigned ONVOY, LLC - NJ 637C RUTHERFORD NJ
2019-06-28 551-261-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 JERSEYCITY NJ
2019-06-26 551-286-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 HACKENSACK NJ
2019-06-26 551-287-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F HACKENSACK NJ
2019-06-11 551-298-6XXX 6000–6999Assigned CSC WIRELESS, LLC 425J JERSEYCITY NJ
2019-06-11 551-298-7XXX 7000–7999Assigned CSC WIRELESS, LLC 425J JERSEYCITY NJ
2019-06-11 551-298-8XXX 8000–8999Assigned CSC WIRELESS, LLC 425J JERSEYCITY NJ
2019-06-11 551-298-9XXX 9000–9999Assigned CSC WIRELESS, LLC 425J JERSEYCITY NJ
2019-06-06 551-296-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 OAKLAND NJ
2019-05-30 551-212-4XXX 4000–4999Assigned PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F TEANECK NJ
2019-05-30 551-282-4XXX 4000–4999Assigned PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F WESTWOOD NJ
2019-05-22 551-287-4XXX 4000–4999Assigned CORETEL NEW JERSEY, INC. - NJ 482F HACKENSACK NJ
2019-05-22 551-287-7XXX 7000–7999Assigned CORETEL NEW JERSEY, INC. - NJ 482F HACKENSACK NJ
2019-05-22 551-287-8XXX 8000–8999Assigned CORETEL NEW JERSEY, INC. - NJ 482F HACKENSACK NJ
2019-05-17 551-278-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F ORADELL NJ
2019-05-17 551-287-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F HACKENSACK NJ
2019-05-16 551-203-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 JERSEYCITY NJ
2019-05-16 551-297-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2019-05-16 551-297-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2019-05-14 551-278-3XXX 3000–3999Assigned CORETEL NEW JERSEY, INC. - NJ 482F ORADELL NJ
2019-05-14 551-278-4XXX 4000–4999Assigned CORETEL NEW JERSEY, INC. - NJ 482F ORADELL NJ
2019-05-14 551-278-6XXX 6000–6999Assigned CORETEL NEW JERSEY, INC. - NJ 482F ORADELL NJ
2019-05-14 551-278-7XXX 7000–7999Assigned CORETEL NEW JERSEY, INC. - NJ 482F ORADELL NJ
2019-05-14 551-298-3XXX 3000–3999Assigned ONVOY, LLC - NJ 637C JERSEYCITY NJ
2019-05-14 551-298-4XXX 4000–4999Assigned ONVOY, LLC - NJ 637C JERSEYCITY NJ
2019-05-14 551-298-5XXX 5000–5999Assigned ONVOY, LLC - NJ 637C JERSEYCITY 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.