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 270
LEVEL 3 COMMUNICATIONS, LLC - KY 135
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
2026-08-19 270-437-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 HARDIN KY
2026-03-13 270-548-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 TEMPLEHILL KY
2024-07-24 270-657-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 DUNMOR KY
2024-03-04 270-507-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 RUSSELLSPG KY
2023-01-24 270-786-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 HORSE CAVE KY
2022-11-23 270-895-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 SALEM KY
2022-10-19 270-359-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 OWENSBORO KY
2022-06-10 270-292-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LA CENTER KY
2022-05-19 270-279-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 HICKMAN KY
2022-05-19 270-429-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 ELKTON KY
2022-05-19 270-473-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 MUNFORDVL KY
2022-05-19 270-504-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 HARTFORD KY
2022-05-19 270-614-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 GLASGWRURL KY
2022-05-19 270-696-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 HODGENVL KY
2022-05-19 270-815-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 EDMONTON KY
2022-05-19 270-998-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 BRANDENBG KY
2022-05-18 270-508-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 SMITHLAND KY
2021-08-24 270-390-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 RADCLIFF KY
2021-03-23 270-914-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 EDDYVILLE KY
2021-02-10 270-715-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 BOWLNGGREN KY
2020-09-15 270-664-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 CLAY KY
2020-08-18 270-869-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 HENDERSON KY
2020-08-03 270-261-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 GLASGOW KY
2020-06-30 270-600-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 ELIZABTHTN KY
2020-06-02 270-639-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 DIXON KY
2020-05-19 270-552-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 CALVERT CY KY
2020-05-19 270-833-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 HENDERSON KY
2020-05-12 270-953-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 PADUCAH KY
2020-05-05 270-228-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 OWENSBORO KY
2019-10-22 270-418-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 BOWLNGGREN KY
2019-01-08 270-645-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 OWENSBORO KY
2018-09-25 270-222-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 OWENSBORO KY
2018-08-21 270-810-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 PEMBROKE KY
2018-05-08 270-296-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEITCHFLD KY
2018-04-17 270-304-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 ELIZABTHTN KY
2018-03-27 270-344-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 OWENSBORO KY
2017-12-21 270-297-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 OWENSBORO KY
2017-11-01 270-446-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 CLARKSON KY
2017-11-01 270-960-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 SO HARDIN KY
2017-10-03 270-418-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 BOWLNGGREN KY
2017-09-27 270-445-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 BARDWELL KY
2017-09-27 270-773-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 CAVE CITY KY
2017-01-11 270-431-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LORETTO KY
2016-12-21 270-337-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 BRADFODSVL KY
2016-12-21 270-367-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 CANEYVILLE KY
2016-12-21 270-951-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 CECILIA KY
2016-03-29 270-263-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 MADISONVL KY
2016-03-04 270-215-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 OWENSBORO KY
2016-02-09 270-228-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 OWENSBORO KY
2015-12-24 270-744-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 PADUCAH KY

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.