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 574
PAETEC ITEL, LLC 21
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
2022-03-14 574-381-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2014-07-01 574-404-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2013-02-07 574-334-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2011-06-02 574-222-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2010-09-03 574-367-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2010-05-11 574-322-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J ELKHART IN
2009-07-08 574-312-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J GOSHEN IN
2008-05-13 574-231-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2008-03-17 574-343-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J ELKHART IN
2007-12-07 574-485-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2007-02-12 574-822-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J MIDDLEBURY IN
2007-01-26 574-855-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2006-11-14 574-312-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J GOSHEN IN
2006-03-22 574-807-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2006-03-22 574-807-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2005-11-11 574-204-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2005-11-11 574-807-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2005-10-25 574-204-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2005-10-25 574-204-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2005-10-25 574-204-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J SOUTH BEND IN
2005-04-18 574-971-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J GOSHEN IN

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.