NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 919
LEVEL 3 COMMUNICATIONS, LLC - NC 222
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
2020-07-21 919-804-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CARY NC
2020-05-21 919-850-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 RALEIGH NC
2019-12-03 919-873-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 RALEIGH NC
2019-10-29 919-276-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 BROADWAY NC
2018-04-11 919-276-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 BROADWAY NC
2017-11-03 919-589-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 APEX NC
2017-04-26 919-765-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 DURHAM NC
2016-07-01 919-243-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CLAYTON NC
2015-09-10 919-748-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 DURHAM NC
2015-09-02 919-921-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GOLDSBORO NC
2015-05-07 919-298-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 OLIVIA NC
2015-04-03 919-589-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 APEX NC
2015-02-25 919-985-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 RALEIGH NC
2015-02-19 919-230-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CARY NC
2014-09-29 919-897-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 SANFORD NC
2014-09-12 919-296-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 HILLSBORGH NC
2014-01-10 919-650-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CARY NC
2014-01-09 919-338-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHAPELHILL NC
2014-01-09 919-948-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 RALEIGH NC
2013-10-10 919-338-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHAPELHILL NC
2013-03-18 919-258-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 BROADWAY NC
2012-10-16 919-948-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 RALEIGH NC
2012-07-12 919-813-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 DURHAM NC
2012-06-05 919-263-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WAKEFOREST NC
2012-03-27 919-514-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 OXFORD NC
2012-02-08 919-948-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 RALEIGH NC
2012-01-26 919-879-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CLAYTON NC
2012-01-11 919-813-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 DURHAM NC
2012-01-11 919-813-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 DURHAM NC
2011-12-29 919-701-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 BENSON NC
2011-11-09 919-751-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GOLDSBORO NC
2011-10-26 919-267-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 APEX NC
2011-10-07 919-888-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 SANFORD NC
2011-09-29 919-263-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WAKEFOREST NC
2011-07-13 919-948-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 RALEIGH NC
2011-05-31 919-948-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 RALEIGH NC
2011-05-25 919-241-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 HILLSBORGH NC
2011-05-25 919-436-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 RALEIGH NC
2011-05-25 919-436-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 RALEIGH NC
2011-05-25 919-436-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 RALEIGH NC
2011-05-25 919-666-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 DURHAM NC
2011-03-15 919-912-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 SMITHFIELD NC
2011-03-10 919-825-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 RALEIGH NC
2011-03-10 919-825-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 RALEIGH NC
2011-02-04 919-666-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 DURHAM NC
2011-01-31 919-666-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 DURHAM NC
2010-12-16 919-930-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 SILER CITY NC
2010-11-24 919-666-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 DURHAM NC
2010-10-26 919-586-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 FUQUAYVRIN NC
2010-10-05 919-666-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 DURHAM NC

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.