NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

9 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, 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
2003-01-23 603-373-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PORTSMOUTH NH
2003-01-09 603-305-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2003-01-09 603-540-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2003-01-09 603-540-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2002-12-18 603-580-8XXX 8000–8999Assigned FREEDOM RING COMMUNICATIONS, LLC 8468 EXETER NH
2002-12-12 603-206-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J MANCHESTER NH
2002-12-12 603-505-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 DERRY NH
2002-12-12 603-580-6XXX 6000–6999Assigned FREEDOM RING COMMUNICATIONS, LLC 8468 EXETER NH
2002-12-12 603-580-7XXX 7000–7999Assigned FREEDOM RING COMMUNICATIONS, LLC 8468 EXETER NH
2002-12-12 603-821-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 NASHUA NH
2002-12-11 603-540-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2002-11-14 603-547-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J GREENFIELD NH
2002-11-14 603-671-0XXX 0000–0999Assigned FREEDOM RING COMMUNICATIONS, LLC 8468 FRANKLIN NH
2002-11-14 603-730-1XXX 1000–1999Assigned FREEDOM RING COMMUNICATIONS, LLC 8468 NO CONWAY NH
2002-11-07 603-440-8XXX 8000–8999Assigned BELL ATLANTIC MOBILE, INC 6386 MERRIMACK NH
2002-11-04 603-505-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 DERRY NH
2002-11-02 603-760-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SEABROOK NH
2002-10-31 603-540-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2002-10-31 603-568-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
2002-10-31 603-568-1XXX 1000–1999Assigned BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
2002-10-31 603-568-2XXX 2000–2999Assigned BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
2002-10-31 603-568-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
2002-10-31 603-686-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 EXETER NH
2002-10-24 603-206-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J MANCHESTER NH
2002-10-23 603-210-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 SUNCOOK NH
2002-10-23 603-310-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 BEDFORD NH
2002-10-23 603-384-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 GOFFSTOWN NH
2002-10-23 603-483-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 CANDIA NH
2002-10-23 603-760-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 SEABROOK NH
2002-10-23 603-769-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 MILFORD NH
2002-10-23 603-864-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 NASHUA NH
2002-10-15 603-664-0XXX 0000–0999Assigned FREEDOM RING COMMUNICATIONS, LLC 8468 BARRINGTON NH
2002-10-06 603-681-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 SALEM NH
2002-10-01 603-865-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 NEWPORT NH
2002-09-25 603-242-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J TROY NH
2002-09-25 603-363-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SPOFFORD NH
2002-09-25 603-399-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J WESTMORELD NH
2002-09-25 603-587-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J CANDIA NH
2002-09-25 603-751-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J PELHAM NH
2002-09-25 603-827-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J HARRISVL NH
2002-09-10 603-790-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NH 996E W LEBANON NH
2002-09-09 603-238-4XXX 4000–4999Assigned OTEL TELEKOM, INC. - NH 9827 PLYMOUTH NH
2002-09-09 603-239-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NH 996E WINCHESTER NH
2002-09-09 603-246-4XXX 4000–4999Assigned OTEL TELEKOM, INC. - NH 9827 WSTEWATSTN NH
2002-09-09 603-274-4XXX 4000–4999Assigned OTEL TELEKOM, INC. - NH 9827 SO HAMPTON NH
2002-09-09 603-515-4XXX 4000–4999Assigned OTEL TELEKOM, INC. - NH 9827 WOLFEBORO NH
2002-09-09 603-592-4XXX 4000–4999Assigned OTEL TELEKOM, INC. - NH 9827 SPOFFORD NH
2002-09-09 603-760-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 SEABROOK NH
2002-09-07 603-210-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NH 996E SUNCOOK NH
2002-09-07 603-244-4XXX 4000–4999Assigned OTEL TELEKOM, INC. - NH 9827 RAYMOND NH

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.