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
2012-11-20 551-888-8XXX 8000–8999Assigned PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F UNION CITY NJ
2011-03-03 551-404-6XXX 6000–6999Assigned METROPCS, INC. 5562 HACKENSACK NJ
2011-02-10 551-333-4XXX 4000–4999Assigned METROPCS, INC. 5562 CLIFFSIDE NJ
2011-01-25 551-333-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F CLIFFSIDE NJ
2010-09-24 551-333-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F CLIFFSIDE NJ
2010-08-04 551-579-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 RAMSEY NJ
2010-07-22 551-795-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F FAIR LAWN NJ
2010-07-21 551-333-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F CLIFFSIDE NJ
2010-07-21 551-333-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F CLIFFSIDE NJ
2010-06-03 551-579-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 RAMSEY NJ
2010-05-21 551-333-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F CLIFFSIDE NJ
2010-05-03 551-587-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F HACKENSACK NJ
2010-03-29 551-333-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - NJ 325E CLIFFSIDE NJ
2010-01-07 551-795-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 FAIR LAWN NJ
2009-12-10 551-579-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J RAMSEY NJ
2009-11-06 551-795-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 FAIR LAWN NJ
2009-09-03 551-795-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 FAIR LAWN NJ
2009-07-30 551-333-0XXX 0000–0999Assigned METROPCS, INC. 5562 CLIFFSIDE NJ
2009-03-16 551-587-4XXX 4000–4999Assigned METROPCS, INC. 5562 HACKENSACK NJ
2009-03-16 551-587-5XXX 5000–5999Assigned METROPCS, INC. 5562 HACKENSACK NJ
2009-01-09 551-333-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F CLIFFSIDE NJ
2008-11-04 551-226-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F JERSEYCITY NJ
2008-11-04 551-579-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F RAMSEY NJ
2008-11-04 551-587-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NJ 118F HACKENSACK NJ
2008-08-12 551-226-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - NJ 325E JERSEYCITY NJ
2008-06-24 551-795-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 FAIR LAWN NJ
2008-06-20 551-200-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - NJ 325E JERSEYCITY NJ
2008-06-02 551-497-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ 7134 HACKENSACK NJ
2008-05-02 551-579-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RAMSEY NJ
2008-03-25 551-333-2XXX 2000–2999Assigned FUSION, LLC 482E CLIFFSIDE NJ
2008-03-12 551-579-5XXX 5000–5999Assigned FUSION, LLC 482E RAMSEY NJ
2008-02-22 551-556-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 UNION CITY NJ
2008-01-31 551-226-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 JERSEYCITY NJ
2008-01-31 551-226-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 JERSEYCITY NJ
2008-01-17 551-226-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 JERSEYCITY NJ
2008-01-17 551-226-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 JERSEYCITY NJ
2008-01-04 551-221-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2008-01-04 551-226-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 JERSEYCITY NJ
2008-01-04 551-226-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 JERSEYCITY NJ
2007-10-18 551-226-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 JERSEYCITY NJ
2007-10-18 551-226-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 JERSEYCITY NJ
2007-10-05 551-200-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 JERSEYCITY NJ
2007-10-05 551-556-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 UNION CITY NJ
2007-10-05 551-556-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 UNION CITY NJ
2007-10-05 551-579-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RAMSEY NJ
2007-10-05 551-697-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 JERSEYCITY NJ
2007-09-25 551-200-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J JERSEYCITY NJ
2007-09-25 551-200-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J JERSEYCITY NJ
2007-09-07 551-689-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 JERSEYCITY NJ
2007-09-07 551-689-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 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.