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 732
LEVEL 3 COMMUNICATIONS, LLC - NJ 226
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2017-03-21 732-855-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 WOODBRIDGE NJ
2016-08-05 732-764-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 BOUNDBROOK NJ
2016-08-05 732-907-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 BOUNDBROOK NJ
2015-09-23 732-507-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 BOUNDBROOK NJ
2015-07-24 732-875-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 NEWBRNSWCK NJ
2015-07-08 732-515-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 METUCHEN NJ
2015-01-13 732-941-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 LAKEHURST NJ
2014-03-31 732-375-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 SEASIDE PK NJ
2014-03-31 732-884-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 KEANSBURG NJ
2012-08-03 732-231-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 CARTERET NJ
2012-07-10 732-230-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 MONMTH JCT NJ
2012-07-05 732-704-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RED BANK NJ
2012-05-31 732-451-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 PTPLEASANT NJ
2012-05-16 732-923-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 LONGBRANCH NJ
2012-02-15 732-820-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 SPRINGLAKE NJ
2012-02-01 732-852-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RED BANK NJ
2011-12-01 732-348-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 FRANKLINPK NJ
2011-12-01 732-853-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 NEWBRNSWCK NJ
2011-12-01 732-943-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RAHWAY NJ
2011-11-04 732-412-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 BOUNDBROOK NJ
2011-10-20 732-333-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 FREEHOLD NJ
2011-04-13 732-408-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 LAKEHURST NJ
2011-03-16 732-443-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 LONGBRANCH NJ
2011-03-08 732-784-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RED BANK NJ
2011-02-25 732-355-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 MONMTH JCT NJ
2011-02-25 732-812-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 MATAWAN NJ
2011-02-24 732-412-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 BOUNDBROOK NJ
2011-02-24 732-734-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 WOODBRIDGE NJ
2011-02-24 732-820-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 SPRINGLAKE NJ
2011-02-22 732-289-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 NEWBRNSWCK NJ
2010-12-10 732-638-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 PERTHAMBOY NJ
2010-12-10 732-852-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RED BANK NJ
2010-10-26 732-719-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 LAKEWOOD NJ
2010-01-21 732-807-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 ASBURYPARK NJ
2009-09-03 732-372-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 METUCHEN NJ
2008-11-17 732-440-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 EATONTOWN NJ
2008-11-10 732-800-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 MANASQUAN NJ
2008-11-07 732-704-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 RED BANK NJ
2008-09-09 732-584-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 BOUNDBROOK NJ
2008-09-04 732-903-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 PTPLEASANT NJ
2008-08-14 732-391-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 MIDDLETOWN NJ
2008-08-14 732-807-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 ASBURYPARK NJ
2008-08-14 732-853-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 NEWBRNSWCK NJ
2008-08-14 732-853-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 NEWBRNSWCK NJ
2008-08-01 732-416-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 SOUTHRIVER NJ
2008-05-08 732-640-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 NEWBRNSWCK NJ
2008-05-08 732-856-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 MIDDLETOWN NJ
2008-05-07 732-355-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 MONMTH JCT NJ
2008-05-07 732-551-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 TOMS RIVER NJ
2008-05-07 732-654-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 SOUTHAMBOY 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.