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
2007-07-06 603-581-8XXX 8000–8999Assigned BELL ATLANTIC MOBILE, INC 6386 LACONIA NH
2007-07-06 603-581-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 LACONIA NH
2007-07-06 603-727-2XXX 2000–2999Assigned BELL ATLANTIC MOBILE, INC 6386 LEBANON NH
2007-07-06 603-733-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 NO CONWAY NH
2007-07-06 603-809-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2007-06-27 603-389-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 DURHAM NH
2007-06-27 603-833-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 ROCHESTER NH
2007-06-26 603-892-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CONCORD NH
2007-06-25 603-237-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J COLEBROOK NH
2007-06-21 603-531-4XXX 4000–4999Assigned CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 PORTSMOUTH NH
2007-06-21 603-531-5XXX 5000–5999Assigned CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 PORTSMOUTH NH
2007-06-21 603-531-6XXX 6000–6999Assigned CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 PORTSMOUTH NH
2007-06-12 603-229-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CONCORD NH
2007-06-12 603-410-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CONCORD NH
2007-06-12 603-573-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CONCORD NH
2007-06-12 603-715-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CONCORD NH
2007-06-11 603-356-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J NO CONWAY NH
2007-06-06 603-545-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
2007-06-06 603-703-8XXX 8000–8999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2007-06-06 603-809-2XXX 2000–2999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2007-06-01 603-570-7XXX 7000–7999Assigned FREEDOM RING COMMUNICATIONS, LLC 8468 PORTSMOUTH NH
2007-05-09 603-593-6XXX 6000–6999Assigned OTEL TELEKOM, INC. - NH 9827 JAFFREY NH
2007-05-04 603-686-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 EXETER NH
2007-05-04 603-732-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 MILFORD NH
2007-05-04 603-831-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 GREENFIELD NH
2007-05-04 603-845-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 DERRY NH
2007-05-04 603-998-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 LACONIA NH
2007-04-25 603-842-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J DOVER NH
2007-04-25 603-842-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J DOVER NH
2007-04-23 603-812-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 PORTSMOUTH NH
2007-04-23 603-988-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 PORTSMOUTH NH
2007-04-09 603-913-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J MERRIMACK NH
2007-04-06 603-257-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J PLAISTOW NH
2007-04-06 603-310-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J BEDFORD NH
2007-04-05 603-325-1XXX 1000–1999Assigned BELL ATLANTIC MOBILE, INC 6386 NEW BOSTON NH
2007-04-05 603-325-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 NEW BOSTON NH
2007-04-05 603-340-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 SUNCOOK NH
2007-04-05 603-372-2XXX 2000–2999Assigned BELL ATLANTIC MOBILE, INC 6386 CLAREMONT NH
2007-04-05 603-703-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2007-04-05 603-714-1XXX 1000–1999Assigned BELL ATLANTIC MOBILE, INC 6386 BEDFORD NH
2007-04-05 603-809-1XXX 1000–1999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2007-04-05 603-913-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 MERRIMACK NH
2007-04-04 603-852-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 KEENE NH
2007-03-14 603-809-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2007-03-02 603-326-9XXX 9000–9999Assigned UNITED STATES CELLULAR - NH 6290 BERLIN NH
2007-03-02 603-998-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 LACONIA NH
2007-03-01 603-283-5XXX 5000–5999Assigned FREEDOM RING COMMUNICATIONS, LLC 8468 KEENE NH
2007-02-28 603-285-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER NH
2007-02-28 603-285-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER NH
2007-02-28 603-285-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER 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.