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
2005-03-17 603-250-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J CENTER HBR NH
2005-03-15 603-206-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MANCHESTER NH
2005-03-08 603-685-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 SALEM NH
2005-03-08 603-685-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 SALEM NH
2005-03-07 603-459-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2005-03-07 603-819-1XXX 1000–1999Assigned BELL ATLANTIC MOBILE, INC 6386 PLAISTOW NH
2005-03-07 603-865-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J NEWPORT NH
2005-02-28 603-842-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 DOVER NH
2005-02-20 603-708-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J CANTERBURY NH
2005-02-15 603-664-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 BARRINGTON NH
2005-02-10 603-632-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J ENFIELD NH
2005-02-08 603-389-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J DURHAM NH
2005-02-08 603-835-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 ALSTEAD NH
2005-02-07 603-244-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 RAYMOND NH
2005-02-07 603-391-2XXX 2000–2999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2005-02-07 603-828-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 PORTSMOUTH NH
2005-02-07 603-965-5XXX 5000–5999Assigned BELL ATLANTIC MOBILE, INC 6386 DERRY NH
2005-02-07 603-978-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER NH
2005-02-03 603-394-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J SO HAMPTON NH
2005-01-27 603-505-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 DERRY NH
2005-01-27 603-821-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 NASHUA NH
2005-01-20 603-822-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J ROCHESTER NH
2005-01-15 603-439-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J KEENE NH
2005-01-13 603-729-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J TILTON NH
2005-01-06 603-828-1XXX 1000–1999Assigned BELL ATLANTIC MOBILE, INC 6386 PORTSMOUTH NH
2005-01-05 603-219-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CONCORD NH
2005-01-05 603-836-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 MANCHESTER NH
2005-01-05 603-988-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 PORTSMOUTH NH
2004-12-30 603-328-0XXX 0000–0999Assigned OTEL TELEKOM, INC. - NH 9827 SALEM NH
2004-12-30 603-371-5XXX 5000–5999Assigned OTEL TELEKOM, INC. - NH 9827 PETERBROGH NH
2004-12-30 603-677-5XXX 5000–5999Assigned OTEL TELEKOM, INC. - NH 9827 MEREDITH NH
2004-12-30 603-819-0XXX 0000–0999Assigned OTEL TELEKOM, INC. - NH 9827 PLAISTOW NH
2004-12-29 603-640-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J HANOVER NH
2004-12-29 603-978-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER NH
2004-12-22 603-354-0XXX 0000–0999Assigned OTEL TELEKOM, INC. - NH 9827 KEENE NH
2004-12-22 603-640-3XXX 3000–3999Assigned OTEL TELEKOM, INC. - NH 9827 HANOVER NH
2004-12-22 603-684-0XXX 0000–0999Assigned OTEL TELEKOM, INC. - NH 9827 LANCASTER NH
2004-12-22 603-832-5XXX 5000–5999Assigned OTEL TELEKOM, INC. - NH 9827 LACONIA NH
2004-12-20 603-342-0XXX 0000–0999Assigned OTEL TELEKOM, INC. - NH 9827 BERLIN NH
2004-12-20 603-504-0XXX 0000–0999Assigned OTEL TELEKOM, INC. - NH 9827 CLAREMONT NH
2004-12-20 603-671-1XXX 1000–1999Assigned OTEL TELEKOM, INC. - NH 9827 FRANKLIN NH
2004-12-20 603-758-0XXX 0000–0999Assigned OTEL TELEKOM, INC. - NH 9827 HAMPTON NH
2004-12-20 603-845-5XXX 5000–5999Assigned OTEL TELEKOM, INC. - NH 9827 DERRY NH
2004-12-16 603-831-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 GREENFIELD NH
2004-12-14 603-865-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J NEWPORT NH
2004-12-08 603-391-8XXX 8000–8999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2004-12-08 603-391-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2004-12-08 603-689-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2004-12-08 603-689-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2004-12-08 603-707-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 MEREDITH 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.