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
2014-06-09 603-952-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SALEM NH
2014-05-21 603-223-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
2014-05-21 603-341-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 MERRIMACK NH
2014-05-21 603-777-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 EXETER NH
2014-05-21 603-918-2XXX 2000–2999Assigned BELL ATLANTIC MOBILE, INC 6386 HAMPTON NH
2014-05-07 603-307-7XXX 7000–7999Assigned CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NO CONWAY NH
2014-04-24 603-213-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 MILFORD NH
2014-04-24 603-456-8XXX 8000–8999Assigned BELL ATLANTIC MOBILE, INC 6386 WARNER NH
2014-04-24 603-513-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
2014-04-24 603-573-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
2014-04-24 603-812-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 PORTSMOUTH NH
2014-04-24 603-921-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2014-04-24 603-937-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 MEREDITH NH
2014-04-24 603-991-1XXX 1000–1999Assigned BELL ATLANTIC MOBILE, INC 6386 LITTLETON NH
2014-04-17 603-309-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 NEWPORT NH
2014-04-11 603-306-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEBANON NH
2014-03-27 603-293-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 LACONIA NH
2014-03-27 603-293-5XXX 5000–5999Assigned BELL ATLANTIC MOBILE, INC 6386 LACONIA NH
2014-03-27 603-318-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2014-03-27 603-331-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 COLEBROOK NH
2014-03-19 603-402-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J NASHUA NH
2014-03-13 603-307-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NO CONWAY NH
2014-03-13 603-439-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 KEENE NH
2014-02-28 603-948-5XXX 5000–5999Assigned BELL ATLANTIC MOBILE, INC 6386 ROCHESTER NH
2014-02-20 603-470-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CONCORD NH
2014-02-06 603-593-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 JAFFREY NH
2014-01-29 603-327-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 SALEM NH
2014-01-23 603-562-4XXX 4000–4999Assigned UNITED STATES CELLULAR - NH 6290 PETERBROGH NH
2014-01-17 603-912-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SALEM NH
2014-01-09 603-366-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LACONIA NH
2014-01-08 603-260-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 DERRY NH
2014-01-08 603-260-1XXX 1000–1999Assigned BELL ATLANTIC MOBILE, INC 6386 DERRY NH
2013-12-18 603-570-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 PORTSMOUTH NH
2013-12-05 603-558-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 CLAREMONT NH
2013-12-05 603-851-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2013-12-05 603-851-8XXX 8000–8999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2013-11-27 603-265-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 NEW BOSTON NH
2013-11-26 603-266-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 TILTON NH
2013-11-22 603-952-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SALEM NH
2013-11-21 603-395-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 EXETER NH
2013-11-20 603-227-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J CONCORD NH
2013-11-20 603-973-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NH
2013-11-08 603-261-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J MERRIMACK NH
2013-10-28 603-213-1XXX 1000–1999Assigned BELL ATLANTIC MOBILE, INC 6386 MILFORD NH
2013-10-28 603-273-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 LACONIA NH
2013-10-28 603-722-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2013-10-28 603-757-2XXX 2000–2999Assigned BELL ATLANTIC MOBILE, INC 6386 KEENE NH
2013-10-24 603-205-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J PORTSMOUTH NH
2013-10-15 603-400-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HOLLIS NH
2013-10-09 603-575-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J LITTLETON 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.