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 678
LEVEL 3 COMMUNICATIONS, LLC - GA 360
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
2017-09-19 678-940-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 LULA GA
2017-08-01 678-722-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NE GA
2017-05-25 678-434-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NW GA
2016-09-21 678-635-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 MONROE GA
2015-08-05 678-214-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NW GA
2015-08-05 678-217-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NW GA
2015-07-30 678-214-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NW GA
2015-02-25 678-981-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NW GA
2015-02-25 678-981-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NW GA
2014-10-23 678-214-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NW GA
2014-06-12 678-752-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 JACKSON GA
2014-06-04 678-909-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NW GA
2014-03-13 678-585-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NE GA
2014-01-15 678-509-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 CONYERS GA
2014-01-10 678-504-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NW GA
2013-10-04 678-515-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA GA
2013-08-23 678-394-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 BUFORD GA
2013-07-17 678-515-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA GA
2013-03-27 678-335-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 KINGSTON GA
2012-11-09 678-563-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 TEMPLE GA
2012-11-09 678-723-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 SENOIA GA
2012-11-09 678-971-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 GAINESVL GA
2012-05-09 678-853-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ROOPVILLE GA
2012-03-16 678-379-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA SO GA
2012-03-16 678-929-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 LUTHERSVL GA
2012-02-16 678-981-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NW GA
2012-02-08 678-871-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 SOCIALCRCL GA
2012-01-26 678-661-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 BOGARTSTHM GA
2011-12-01 678-573-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 TALLAPOOSA GA
2011-11-30 678-212-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 COVINGTON GA
2011-11-22 678-929-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 LUTHERSVL GA
2011-09-22 678-400-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 CLERMONT GA
2011-09-19 678-374-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 CONYERS GA
2011-09-19 678-929-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 LUTHERSVL GA
2011-08-24 678-359-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 BARNESVL GA
2011-08-03 678-288-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 BUFORD GA
2011-08-03 678-865-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 GAINESVL GA
2011-07-27 678-256-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NE GA
2011-07-27 678-256-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NE GA
2011-07-13 678-246-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 CEDARTOWN GA
2011-06-16 678-853-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ROOPVILLE GA
2011-06-16 678-929-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 LUTHERSVL GA
2011-03-03 678-974-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA GA
2011-03-03 678-974-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA GA
2010-12-16 678-249-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NE GA
2010-12-10 678-619-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA SO GA
2010-12-02 678-831-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NW GA
2010-12-02 678-831-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NW GA
2010-12-02 678-831-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA NW GA
2010-11-29 678-671-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - GA 6116 CONCORD GA

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.