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 505
LEVEL 3 COMMUNICATIONS, LLC - NM 149
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
2023-01-25 505-499-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ZUNI NM
2023-01-25 505-622-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 PECOS NM
2023-01-25 505-646-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 FENCE LAKE NM
2023-01-25 505-744-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 RAMAH NM
2023-01-25 505-758-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 PINE HILL NM
2023-01-25 505-799-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 VANDERWGON NM
2021-04-30 505-477-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SANTA FE NM
2019-11-20 505-732-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 NASCHITTI NM
2019-11-18 505-371-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 TSE BONITO NM
2019-11-18 505-696-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 NEWCOMB NM
2019-11-18 505-723-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SANOSTEE NM
2019-11-18 505-733-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 TOHATCHI NM
2019-11-18 505-735-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 TWIN LAKES NM
2019-11-18 505-777-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 NAVAJO NM
2019-11-18 505-789-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 TOADLENA NM
2019-10-31 505-354-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SHIPROCK NM
2019-10-31 505-422-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 CROWNPOINT NM
2018-09-27 505-692-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ESPANOLA NM
2017-01-31 505-494-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2017-01-17 505-772-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SANTA FE NM
2017-01-17 505-772-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SANTA FE NM
2017-01-17 505-772-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SANTA FE NM
2017-01-17 505-772-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SANTA FE NM
2017-01-17 505-772-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SANTA FE NM
2017-01-17 505-772-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SANTA FE NM
2017-01-17 505-772-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SANTA FE NM
2017-01-17 505-772-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SANTA FE NM
2016-02-03 505-355-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2016-02-03 505-355-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2015-12-16 505-389-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2015-11-24 505-389-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2015-09-01 505-300-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2015-08-31 505-910-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2015-08-11 505-544-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2015-08-05 505-303-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SANTA FE NM
2014-09-30 505-209-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 GRANTS NM
2014-09-30 505-545-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2014-09-30 505-545-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2014-09-30 505-985-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2014-09-17 505-985-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2014-09-10 505-780-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SANTA FE NM
2014-08-12 505-257-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 LOS ALAMOS NM
2014-08-12 505-709-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 WHITE ROCK NM
2014-08-05 505-339-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 GALLUP NM
2014-07-25 505-322-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2014-05-29 505-600-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2013-11-05 505-596-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2013-10-02 505-219-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2013-09-25 505-395-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SANTA FE NM
2013-09-05 505-219-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM

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.