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
2005-08-18 603-242-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 TROY NH
2005-08-18 603-323-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 TAMWORTH NH
2005-08-18 603-399-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 WESTMORELD NH
2005-08-18 603-487-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 NEW BOSTON NH
2005-08-16 603-237-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 COLEBROOK NH
2005-08-16 603-287-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 CLAREMONT NH
2005-08-16 603-397-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 DURHAM NH
2005-08-16 603-463-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 DEERFIELD NH
2005-08-16 603-585-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 FITZWILLIM NH
2005-08-16 603-768-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 DANBURY NH
2005-08-16 603-965-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 DERRY NH
2005-08-10 603-601-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 HAMPTON NH
2005-08-04 603-826-8XXX 8000–8999Assigned OTEL TELEKOM, INC. - NH 9827 CHARLESTN NH
2005-08-02 603-236-1XXX 1000–1999Assigned BELL ATLANTIC MOBILE, INC 6386 CAMPTON NH
2005-08-02 603-236-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 CAMPTON NH
2005-08-02 603-325-8XXX 8000–8999Assigned BELL ATLANTIC MOBILE, INC 6386 NEW BOSTON NH
2005-08-02 603-466-4XXX 4000–4999Assigned OTEL TELEKOM, INC. - NH 9827 GORHAM NH
2005-08-02 603-546-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 NASHUA NH
2005-08-02 603-592-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 SPOFFORD NH
2005-08-02 603-821-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 NASHUA NH
2005-08-02 603-828-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 PORTSMOUTH NH
2005-07-29 603-466-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J GORHAM NH
2005-07-28 603-481-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J PLYMOUTH NH
2005-07-28 603-481-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J PLYMOUTH NH
2005-07-28 603-821-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J NASHUA NH
2005-07-28 603-821-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J NASHUA NH
2005-07-28 603-852-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 KEENE NH
2005-07-28 603-866-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 DOVER NH
2005-07-11 603-373-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J PORTSMOUTH NH
2005-07-07 603-249-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 MILFORD NH
2005-07-07 603-391-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2005-07-07 603-391-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2005-07-07 603-667-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 LEBANON NH
2005-07-07 603-667-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 LEBANON NH
2005-07-07 603-686-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 EXETER NH
2005-07-07 603-689-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2005-07-07 603-706-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 RAYMOND NH
2005-06-27 603-343-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 DOVER NH
2005-06-27 603-413-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J MANCHESTER NH
2005-06-27 603-413-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J MANCHESTER NH
2005-06-27 603-563-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J DUBLIN NH
2005-06-21 603-238-8XXX 8000–8999Assigned METROPCS, INC. 5562 PLYMOUTH NH
2005-06-20 603-371-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 PETERBROGH NH
2005-06-20 603-371-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 PETERBROGH NH
2005-06-20 603-499-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 KEENE NH
2005-06-20 603-556-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 LACONIA NH
2005-06-20 603-556-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 LACONIA NH
2005-06-13 603-617-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 DOVER NH
2005-06-13 603-617-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 DOVER NH
2005-06-13 603-845-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J DERRY 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.