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 TELECOM OF NEW MEXICO, LLC - NM 29
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
2016-01-22 505-539-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2015-03-19 505-303-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 SANTA FE NM
2015-01-23 505-787-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 FARMINGTON NM
2013-12-06 505-267-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2013-12-06 505-267-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2013-01-16 505-395-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 SANTA FE NM
2012-11-16 505-569-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-11-21 505-200-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-11-21 505-200-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-11-21 505-200-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-11-21 505-200-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-11-21 505-200-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-05-05 505-253-0XXX 0000–0999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-05-05 505-253-1XXX 1000–1999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-05-05 505-253-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-05-05 505-253-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-05-05 505-253-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-05-05 505-253-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-05-05 505-253-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-05-05 505-253-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-05-05 505-253-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2011-05-05 505-253-9XXX 9000–9999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2009-05-04 505-455-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 SANTA FE NM
2007-05-01 505-467-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 SANTA FE NM
2007-02-15 505-515-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2006-09-07 505-515-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2006-08-08 505-227-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2004-08-06 505-404-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2004-04-06 505-216-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 SANTA FE 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.