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 704
LEVEL 3 COMMUNICATIONS, LLC - NC 250
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
2021-06-17 704-420-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2021-06-17 704-420-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2021-01-26 704-317-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2019-08-21 704-285-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2019-08-21 704-285-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2019-08-21 704-285-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2019-06-11 704-627-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WAXHAW NC
2019-06-03 704-272-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 PEACHLPKTN NC
2019-03-05 704-850-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 NEW LONDON NC
2018-10-30 704-561-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2018-10-30 704-565-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2018-09-25 704-424-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2018-07-30 704-417-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2018-07-30 704-417-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2018-07-30 704-417-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2017-01-24 704-324-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WINGATE NC
2015-04-17 704-486-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 OAKBORO NC
2015-04-03 704-593-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2015-02-25 704-467-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CONCORD NC
2014-04-03 704-350-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2013-07-10 704-504-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2013-06-26 704-961-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 ALBEMARLE NC
2013-06-19 704-343-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2013-06-19 704-343-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2013-06-19 704-378-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2013-01-24 704-594-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2012-12-12 704-594-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2012-11-28 704-897-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 DAVIDSON NC
2012-10-10 704-360-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 MOORESVL NC
2012-07-12 704-870-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 SALISBURY NC
2012-02-16 704-774-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 MONROE NC
2012-01-26 704-413-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 BELMONT NC
2011-09-16 704-935-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 KANNAPOLIS NC
2011-05-19 704-360-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 MOORESVL NC
2011-03-15 704-256-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WAXHAW NC
2011-03-11 704-903-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 STATESVL NC
2011-03-10 704-869-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GASTONIA NC
2011-03-03 704-826-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 ANSONVILLE NC
2011-02-11 704-879-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 LOWELL NC
2011-01-03 704-512-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2010-07-30 704-612-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2010-05-25 704-612-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2010-05-18 704-247-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2010-03-22 704-665-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2010-02-03 704-200-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2010-02-02 704-675-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GASTONIA NC
2010-01-22 704-603-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 SALISBURY NC
2010-01-22 704-709-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 ALTON NC
2008-10-31 704-230-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 MOORESVL NC
2008-10-31 704-234-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 INDIANTRAL 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.