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 443
PAETEC ITEL, LLC 210
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
2016-11-25 443-213-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J PIKESVILLE MD
2016-11-08 443-988-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J CENTREVL MD
2016-06-21 443-652-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J TOWSON MD
2015-08-06 443-588-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J PARKVILLE MD
2014-10-13 443-666-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J CHESTERTN MD
2014-07-31 443-808-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J ANNAPOLIS MD
2014-06-27 443-607-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J WEST RIVER MD
2014-02-26 443-948-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J BALTIMORE MD
2013-09-12 443-733-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WATERLO238 MD
2013-08-23 443-259-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J COLUMBIA MD
2013-02-07 443-805-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J GLENBURNIE MD
2012-08-10 443-931-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J BALTIMORE MD
2012-06-29 443-258-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J EASTON MD
2012-06-29 443-972-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J CAMBRIDGE MD
2012-05-02 443-297-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J ARBUTUS MD
2012-03-14 443-607-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J WEST RIVER MD
2012-03-01 443-320-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J BALTIMORE MD
2011-12-08 443-575-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J ARBUTUS MD
2011-12-06 443-843-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J HAVREGRACE MD
2011-10-11 443-868-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J ESSEX MD
2011-02-15 443-537-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J COLUMBIA MD
2011-01-10 443-379-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J PIKESVILLE MD
2011-01-10 443-888-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J PRINCEANNE MD
2010-09-22 443-292-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J CROFTON MD
2010-07-26 443-261-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J SEVERNA PK MD
2010-06-01 443-515-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J CAMBRIDGE MD
2010-05-21 443-810-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J BALTIMORE MD
2010-05-21 443-873-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J BALTIMORE MD
2010-05-21 443-873-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J BALTIMORE MD
2010-05-11 443-470-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J TOWSON MD
2010-05-06 443-533-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J JARRETTSVL MD
2010-03-16 443-464-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J CHURCHVL MD
2010-03-16 443-464-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J CHURCHVL MD
2010-02-24 443-760-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J ABERDEEN MD
2010-02-17 443-558-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J ABERDEEN MD
2009-10-14 443-832-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J COLUMBIA MD
2009-09-24 443-924-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J ANNAPOLIS MD
2009-09-04 443-438-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J BALTIMORE MD
2009-04-08 443-503-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J DUNDALK MD
2009-04-07 443-792-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J BRYNPKLNCM MD
2009-03-05 443-733-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J WATERLO238 MD
2008-12-03 443-769-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J BALTIMORE MD
2008-10-31 443-529-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J BALTIMORE MD
2008-09-15 443-718-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J COLUMBIA MD
2008-08-27 443-578-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J COCKEYSVL MD
2008-08-21 443-761-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J TOWSON MD
2008-08-21 443-767-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J WORTHINGTN MD
2008-07-22 443-492-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J ELKRIDGE MD
2008-06-20 443-743-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J BALTIMORE MD
2008-05-29 443-718-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J COLUMBIA MD

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.