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
Clear Download CSV ↓
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 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.