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 904
LEVEL 3 COMMUNICATIONS, LLC - FL 180
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
2026-06-08 904-668-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 HILLIARD FL
2023-03-22 904-873-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MACCLENNY FL
2022-12-12 904-558-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 KINGSLEYLK FL
2022-12-12 904-756-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 LAWTEY FL
2022-02-18 904-841-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2022-02-18 904-841-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2022-02-18 904-841-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2022-02-18 904-841-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2022-02-18 904-841-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2022-02-18 904-841-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2022-02-18 904-841-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2022-02-18 904-841-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2022-02-18 904-841-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2022-02-18 904-841-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2021-07-16 904-691-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ST JOHNS FL
2021-07-16 904-691-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ST JOHNS FL
2021-07-16 904-691-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ST JOHNS FL
2021-07-16 904-691-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ST JOHNS FL
2021-07-16 904-691-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ST JOHNS FL
2021-07-16 904-691-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ST JOHNS FL
2021-07-16 904-691-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ST JOHNS FL
2021-07-16 904-691-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ST JOHNS FL
2021-07-16 904-691-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ST JOHNS FL
2021-07-16 904-691-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ST JOHNS FL
2021-04-16 904-837-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ST JOHNS FL
2021-04-16 904-837-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ST JOHNS FL
2021-02-24 904-618-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2021-02-01 904-618-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2020-11-17 904-650-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2019-10-02 904-539-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2019-08-14 904-523-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2019-05-31 904-431-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2019-03-22 904-490-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2019-03-22 904-490-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2017-09-29 904-344-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 HASTINGS FL
2017-08-01 904-362-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2017-05-15 904-409-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 SANDERSON FL
2016-06-20 904-760-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2016-01-06 904-827-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ST JOHNS FL
2015-11-25 904-559-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2015-07-23 904-559-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2015-07-23 904-903-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2015-07-23 904-903-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2015-04-07 904-717-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2015-04-07 904-717-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2015-04-07 904-717-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2014-10-22 904-575-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2014-10-22 904-575-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL
2014-07-25 904-770-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ST JOHNS FL
2014-06-26 904-570-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JACKSONVL FL

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.