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 571
PAETEC ITEL, LLC 103
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
2019-02-27 571-752-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J HERNDON VA
2017-05-31 571-369-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WSNGTNZN17 VA
2016-09-27 571-371-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2016-09-27 571-371-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2016-09-27 571-371-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2016-09-27 571-371-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2016-09-27 571-371-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2016-09-14 571-525-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J HERNDON VA
2016-05-24 571-376-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J HERNDON VA
2016-03-16 571-775-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2016-02-08 571-444-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2015-10-19 571-707-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J LEESBURG VA
2015-05-27 571-351-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2014-10-01 571-349-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J ARCOLA VA
2014-04-24 571-458-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2013-06-06 571-526-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J HERNDON VA
2013-06-06 571-526-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J HERNDON VA
2013-04-22 571-302-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2013-04-17 571-458-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2013-04-04 571-398-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J OCCOQUAN VA
2013-02-26 571-302-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2012-10-12 571-353-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J HERNDON VA
2012-10-12 571-353-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J HERNDON VA
2012-09-13 571-359-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J MANASSAS VA
2012-08-09 571-298-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J DALE CITY VA
2012-08-07 571-733-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2012-03-28 571-447-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2011-11-23 571-392-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J HERNDON VA
2011-10-11 571-989-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J DALE CITY VA
2011-08-15 571-447-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2011-05-25 571-553-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J LEESBURG VA
2011-05-25 571-553-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J LEESBURG VA
2011-05-25 571-553-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J LEESBURG VA
2011-05-25 571-553-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J LEESBURG VA
2011-05-25 571-553-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J LEESBURG VA
2011-05-25 571-553-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J LEESBURG VA
2011-05-25 571-553-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J LEESBURG VA
2011-05-25 571-553-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J LEESBURG VA
2011-05-25 571-553-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J LEESBURG VA
2011-05-25 571-553-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J LEESBURG VA
2011-03-30 571-858-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2011-03-28 571-421-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J WSNGTNZN17 VA
2010-12-06 571-358-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J MANASSAS VA
2010-11-09 571-814-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2010-10-26 571-612-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J HERNDON VA
2010-08-23 571-319-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2010-08-23 571-449-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J HERNDON VA
2010-06-11 571-319-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2010-05-13 571-405-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WSNGTNZN17 VA
2010-05-04 571-318-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WSNGTNZN19 VA

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.