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 475
PAETEC ITEL, LLC 24
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
2021-02-26 475-837-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J NEW HAVEN CT
2021-02-26 475-837-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J NEW HAVEN CT
2021-02-26 475-837-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J NEW HAVEN CT
2020-02-18 475-263-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J WATERBURY CT
2019-06-03 475-685-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J STAMFORD CT
2017-09-14 475-319-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J BRIDGEPORT CT
2017-05-16 475-414-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J NEW HAVEN CT
2016-05-19 475-313-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J WATERBURY CT
2016-01-06 475-225-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J BRIDGEPORT CT
2015-07-22 475-206-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J DANBURY CT
2015-06-26 475-343-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J MERIDEN CT
2015-06-03 475-655-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J NEW HAVEN CT
2015-05-07 475-619-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J STAMFORD CT
2014-10-06 475-289-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J DANBURY CT
2014-04-24 475-329-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J DANBURY CT
2013-09-18 475-529-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J DANBURY CT
2013-08-28 475-222-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J WATERBURY CT
2013-08-23 475-882-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J HUNTINGTON CT
2013-08-23 475-882-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J HUNTINGTON CT
2013-07-11 475-222-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WATERBURY CT
2013-03-07 475-999-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J FAIRFIELD CT
2011-05-23 475-202-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J NEW HAVEN CT
2011-05-23 475-202-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J NEW HAVEN CT
2009-08-13 475-882-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J HUNTINGTON CT

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.