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
2014-12-15 551-237-7XXX 7000–7999Assigned ONVOY, LLC - NJ 637C HACKENSACK NJ
2014-12-15 551-237-8XXX 8000–8999Assigned ONVOY, LLC - NJ 637C HACKENSACK NJ
2014-12-15 551-313-8XXX 8000–8999Assigned ONVOY, LLC - NJ 637C CLIFFSIDE NJ
2014-12-15 551-313-9XXX 9000–9999Assigned ONVOY, LLC - NJ 637C CLIFFSIDE NJ
2014-12-12 551-252-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 RAMSEY NJ
2014-12-12 551-252-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 RAMSEY NJ
2014-12-08 551-313-3XXX 3000–3999Assigned METROPCS, INC. 5562 CLIFFSIDE NJ
2014-12-08 551-313-5XXX 5000–5999Assigned METROPCS, INC. 5562 CLIFFSIDE NJ
2014-12-08 551-313-6XXX 6000–6999Assigned METROPCS, INC. 5562 CLIFFSIDE NJ
2014-11-25 551-237-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J HACKENSACK NJ
2014-11-20 551-237-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 HACKENSACK NJ
2014-11-20 551-237-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 HACKENSACK NJ
2014-11-20 551-238-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 FAIR LAWN NJ
2014-11-20 551-257-0XXX 0000–0999Assigned ONVOY, LLC - NJ 637C UNION CITY NJ
2014-11-20 551-257-1XXX 1000–1999Assigned ONVOY, LLC - NJ 637C UNION CITY NJ
2014-11-20 551-257-2XXX 2000–2999Assigned ONVOY, LLC - NJ 637C UNION CITY NJ
2014-11-17 551-236-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 CLOSTER NJ
2014-11-17 551-236-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 CLOSTER NJ
2014-11-17 551-236-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 CLOSTER NJ
2014-11-17 551-257-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 UNION CITY NJ
2014-11-17 551-257-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 UNION CITY NJ
2014-11-14 551-204-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 FAIR LAWN NJ
2014-11-14 551-204-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 FAIR LAWN NJ
2014-11-14 551-204-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 FAIR LAWN NJ
2014-11-14 551-204-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 FAIR LAWN NJ
2014-11-11 551-252-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 RAMSEY NJ
2014-10-29 551-204-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 FAIR LAWN NJ
2014-10-29 551-204-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 FAIR LAWN NJ
2014-10-24 551-313-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K CLIFFSIDE NJ
2014-10-21 551-233-0XXX 0000–0999Assigned PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F JERSEYCITY NJ
2014-10-15 551-233-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 JERSEYCITY NJ
2014-10-10 551-252-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 RAMSEY NJ
2014-10-08 551-235-8XXX 8000–8999Assigned ONVOY, LLC - NJ 637C JERSEYCITY NJ
2014-10-08 551-235-9XXX 9000–9999Assigned ONVOY, LLC - NJ 637C JERSEYCITY NJ
2014-10-07 551-228-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 HACKENSACK NJ
2014-10-07 551-228-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 HACKENSACK NJ
2014-10-07 551-500-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 RAMSEY NJ
2014-10-03 551-232-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2014-10-03 551-232-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2014-10-03 551-232-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2014-10-03 551-232-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2014-10-03 551-233-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 JERSEYCITY NJ
2014-09-30 551-224-9XXX 9000–9999Assigned ONVOY, LLC - NJ 637C FAIR LAWN NJ
2014-09-29 551-225-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 JERSEYCITY NJ
2014-09-29 551-225-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 JERSEYCITY NJ
2014-09-26 551-500-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RAMSEY NJ
2014-09-24 551-500-9XXX 9000–9999Assigned CSC VOICE, LLC 612K RAMSEY NJ
2014-09-19 551-666-5XXX 5000–5999Assigned ONVOY, LLC - NJ 637C BAYONNE NJ
2014-09-16 551-227-9XXX 9000–9999Assigned ONVOY, LLC - NJ 637C JERSEYCITY NJ
2014-09-16 551-888-3XXX 3000–3999Assigned ONVOY, LLC - NJ 637C UNION CITY 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.