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 540
LEVEL 3 COMMUNICATIONS, LLC - VA 176
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
2026-08-12 540-236-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 HARRISONBG VA
2025-07-25 540-901-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BROADWAY VA
2024-04-15 540-863-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 CLIFTNFORG VA
2023-02-10 540-233-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WOODSTOCK VA
2022-12-06 540-515-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BRIDGEWTR VA
2022-08-22 540-740-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 NEW MARKET VA
2022-04-25 540-796-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 HARTWOOD VA
2022-04-08 540-971-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 EDINBURG VA
2021-10-25 540-802-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 MONTVALE VA
2021-08-11 540-909-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BOONESMILL VA
2021-03-03 540-966-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 TROUTVILLE VA
2020-11-06 540-884-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 EAGLE ROCK VA
2020-10-27 540-473-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 FINCASTLE VA
2020-09-15 540-417-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 MCGAHEYSVL VA
2020-08-26 540-821-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BERRYVILLE VA
2020-08-05 540-738-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 MADISON VA
2020-06-12 540-694-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 STEPHENSCY VA
2020-06-05 540-447-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WAYNESBORO VA
2019-09-16 540-503-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 GORE VA
2018-12-20 540-531-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 MCCLUNG VA
2018-12-20 540-608-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 MOUNTANGRV VA
2018-12-20 540-637-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 MCDOWELL VA
2018-12-20 540-916-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WILLIAMSVL VA
2018-09-12 540-281-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BLUEMONT VA
2018-01-29 540-549-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 MILL GAP VA
2018-01-29 540-601-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BLUE GRASS VA
2018-01-29 540-648-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 MONTEREY VA
2017-07-03 540-799-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 RAPHINE VA
2017-06-26 540-348-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BROWNSBURG VA
2017-06-26 540-691-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 COVINGTON VA
2017-06-26 540-889-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 CRAIGSVL VA
2016-05-04 540-654-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 FREDECKSBG VA
2016-04-26 540-488-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 ROCKYMOUNT VA
2015-12-23 540-559-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 CROWSHMTIT VA
2015-12-23 540-595-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 ROANOKE VA
2015-07-23 540-595-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 ROANOKE VA
2015-07-07 540-684-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 FREDECKSBG VA
2015-05-28 540-699-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 STAFFORD VA
2015-05-28 540-795-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 ROANOKE VA
2014-12-01 540-486-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WINCHESTER VA
2014-12-01 540-707-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BEDFORD VA
2014-09-30 540-512-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 ROANOKE VA
2014-09-30 540-765-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 SALEM VA
2014-06-26 540-456-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 GREENWOOD VA
2014-06-19 540-217-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 HARRISONBG VA
2014-06-17 540-360-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 ORANGE VA
2014-06-16 540-218-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 SHENANDOAH VA
2014-06-16 540-225-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 STANLEY VA
2014-06-16 540-259-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 MINERAL VA
2014-03-25 540-212-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 CULPEPER VA

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.