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 501
PAETEC ITEL, LLC 12
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
2022-09-21 501-527-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J LITTLEROCK AR
2021-10-13 501-665-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J LITTLEROCK AR
2021-10-13 501-665-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J LITTLEROCK AR
2021-09-07 501-512-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J BRYANTCGVL AR
2020-06-08 501-630-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J LITTLEROCK AR
2020-05-05 501-534-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J LITTLEROCK AR
2014-06-02 501-470-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J CONWAY AR
2013-11-08 501-408-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J BENTON AR
2012-10-30 501-651-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J HOTSPRINGS AR
2011-03-28 501-400-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J LITTLEROCK AR
2011-01-03 501-939-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J LONSDALE AR
2010-06-24 501-547-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J HOTSPRINGS AR

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.