NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 201
LEVEL 3 COMMUNICATIONS, LLC - NJ 205
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
2020-01-29 201-777-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RUTHERFORD NJ
2016-10-11 201-422-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 UNION CITY NJ
2016-10-11 201-422-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 UNION CITY NJ
2016-04-05 201-849-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 LEONIA NJ
2015-05-28 201-882-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RIDGEWOOD NJ
2015-01-13 201-735-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 ENGLEWOOD NJ
2014-09-29 201-340-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RUTHERFORD NJ
2014-09-29 201-583-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 UNION CITY NJ
2014-09-29 201-775-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 PARK RIDGE NJ
2014-09-26 201-735-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 ENGLEWOOD NJ
2014-06-25 201-646-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 HACKENSACK NJ
2014-04-07 201-713-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 UNION CITY NJ
2014-03-25 201-514-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RUTHERFORD NJ
2014-01-28 201-484-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 JERSEYCITY NJ
2014-01-21 201-561-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 HACKENSACK NJ
2014-01-16 201-366-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 CLIFFSIDE NJ
2013-11-20 201-831-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 CRAGMERE NJ
2013-11-14 201-561-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 HACKENSACK NJ
2013-10-02 201-713-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 UNION CITY NJ
2013-09-18 201-345-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RIDGEWOOD NJ
2013-09-10 201-340-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RUTHERFORD NJ
2013-08-15 201-731-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 ENGLEWOOD NJ
2013-07-31 201-885-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 JERSEYCITY NJ
2013-06-26 201-957-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 HACKENSACK NJ
2013-01-09 201-885-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 JERSEYCITY NJ
2012-12-21 201-494-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 HACKENSACK NJ
2012-11-28 201-354-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 BAYONNE NJ
2012-11-07 201-781-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 WESTWOOD NJ
2012-10-10 201-660-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 CLOSTER NJ
2012-08-03 201-591-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 TEANECK NJ
2012-07-05 201-212-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 HACKENSACK NJ
2012-02-01 201-355-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RUTHERFORD NJ
2012-02-01 201-509-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 FAIR LAWN NJ
2012-01-31 201-479-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 JERSEYCITY NJ
2011-12-22 201-308-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 ENGLEWOOD NJ
2011-12-08 201-351-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 UNION CITY NJ
2011-12-01 201-425-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 WYCKOFF NJ
2011-12-01 201-603-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 BAYONNE NJ
2011-10-28 201-419-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RAMSEY NJ
2011-10-28 201-977-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 ORADELL NJ
2011-10-06 201-279-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 KEARNY NJ
2011-10-06 201-877-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 CLIFFSIDE NJ
2011-08-03 201-345-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RIDGEWOOD NJ
2011-07-08 201-470-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 HACKENSACK NJ
2011-03-08 201-448-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 JERSEYCITY NJ
2011-03-08 201-448-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 JERSEYCITY NJ
2011-02-25 201-468-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 FAIR LAWN NJ
2011-02-24 201-425-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 WYCKOFF NJ
2011-02-24 201-654-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 CLIFFSIDE NJ
2010-12-10 201-605-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 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.