NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 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, last 30 days — NPA 603
OMNIPOINT MIAMI E LICENSE, LLC 5
BELL ATLANTIC MOBILE, INC 4
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
2012-07-30 603-515-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K WOLFEBORO NH
2012-07-30 603-575-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K LITTLETON NH
2012-07-30 603-586-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K JEFFERSON NH
2012-07-30 603-636-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K GROVETON NH
2012-07-30 603-638-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K MONROE NH
2012-07-30 603-651-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K CTROSSIPEE NH
2012-07-30 603-662-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K CONWAY NH
2012-07-30 603-730-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K NO CONWAY NH
2012-07-30 603-745-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K NOWOODSTOK NH
2012-07-30 603-764-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K WARREN NH
2012-07-30 603-786-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K RUMNEY NH
2012-07-30 603-787-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K WOODSVILLE NH
2012-07-30 603-788-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K LANCASTER NH
2012-07-30 603-823-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K FRANCONIA NH
2012-07-30 603-837-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K WHITEFIELD NH
2012-07-30 603-838-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K LISBON NH
2012-07-30 603-839-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K FARMINGTON NH
2012-07-30 603-846-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K TWIN MT NH
2012-07-30 603-869-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K BETHLEHEM NH
2012-07-30 603-871-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K SANBORNVL NH
2012-07-30 603-876-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K MARLBOROGH NH
2012-07-30 603-915-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K GORHAM NH
2012-07-30 603-960-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K CAMPTON NH
2012-07-30 603-989-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K PIKE NH
2012-07-20 603-375-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K ASHLAND NH
2012-07-11 603-782-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J MANCHESTER NH
2012-07-10 603-715-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J CONCORD NH
2012-06-25 603-580-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J EXETER NH
2012-06-14 603-793-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 EXETER NH
2012-06-05 603-818-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J DERRY NH
2012-05-18 603-339-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 DERRY NH
2012-05-18 603-440-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 MERRIMACK NH
2012-05-18 603-832-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 LACONIA NH
2012-05-18 603-921-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2012-05-18 603-923-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 ROCHESTER NH
2012-05-14 603-921-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K NASHUA NH
2012-05-08 603-458-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SALEM NH
2012-05-08 603-554-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J MILFORD NH
2012-05-08 603-631-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 LANCASTER NH
2012-05-08 603-716-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2012-05-08 603-851-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2012-04-25 603-518-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MANCHESTER NH
2012-04-20 603-751-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PELHAM NH
2012-04-18 603-565-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PENACOOK NH
2012-04-18 603-678-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LEBANON NH
2012-04-13 603-217-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 BRISTOL NH
2012-04-13 603-610-3XXX 3000–3999Assigned FREEDOM RING COMMUNICATIONS, LLC 8468 PORTSMOUTH NH
2012-04-12 603-589-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J NASHUA NH
2012-04-12 603-843-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J NEWPORT NH
2012-04-05 603-377-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MERRIMACK NH

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.