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
2018-09-07 603-484-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 NASHUA NH
2018-09-05 603-268-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 SUNCOOK NH
2018-09-05 603-316-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 MILFORD NH
2018-09-05 603-333-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
2018-09-05 603-854-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MANCHESTER NH
2018-08-24 603-932-6XXX 6000–6999Assigned ONVOY, LLC - NH 637E MANCHESTER NH
2018-08-24 603-945-1XXX 1000–1999Assigned ONVOY, LLC - NH 637E MANCHESTER NH
2018-08-24 603-945-7XXX 7000–7999Assigned ONVOY, LLC - NH 637E MANCHESTER NH
2018-08-24 603-945-8XXX 8000–8999Assigned ONVOY, LLC - NH 637E MANCHESTER NH
2018-08-16 603-329-2XXX 2000–2999Assigned BELL ATLANTIC MOBILE, INC 6386 HAMPSTEAD NH
2018-08-16 603-605-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 DOVER NH
2018-08-10 603-350-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MILTON NH
2018-08-01 603-484-1XXX 1000–1999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2018-08-01 603-932-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2018-07-31 603-403-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J ROCHESTER NH
2018-07-16 603-614-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 WCHESTEFLD NH
2018-07-11 603-309-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 NEWPORT NH
2018-07-11 603-404-8XXX 8000–8999Assigned BELL ATLANTIC MOBILE, INC 6386 DERRY NH
2018-07-06 603-932-7XXX 7000–7999Assigned ONVOY, LLC - NH 637E MANCHESTER NH
2018-06-13 603-333-5XXX 5000–5999Assigned BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
2018-06-08 603-307-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 NO CONWAY NH
2018-05-24 603-346-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PLYMOUTH NH
2018-05-17 603-333-4XXX 4000–4999Assigned METROPCS, INC. 5562 CONCORD NH
2018-05-04 603-945-2XXX 2000–2999Assigned ONVOY, LLC - NH 637E MANCHESTER NH
2018-05-04 603-945-4XXX 4000–4999Assigned ONVOY, LLC - NH 637E MANCHESTER NH
2018-05-04 603-945-5XXX 5000–5999Assigned ONVOY, LLC - NH 637E MANCHESTER NH
2018-05-03 603-419-1XXX 1000–1999Assigned BELL ATLANTIC MOBILE, INC 6386 SUNCOOK NH
2018-05-03 603-544-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K MELVIN VLG NH
2018-05-01 603-777-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 EXETER NH
2018-04-16 603-507-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 ROCHESTER NH
2018-03-21 603-852-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 KEENE NH
2018-03-15 603-932-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANCHESTER NH
2018-03-15 603-932-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANCHESTER NH
2018-02-28 603-484-8XXX 8000–8999Assigned PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 927H NASHUA NH
2018-02-28 603-836-8XXX 8000–8999Assigned PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 927H MANCHESTER NH
2018-02-27 603-237-2XXX 2000–2999Assigned BELL ATLANTIC MOBILE, INC 6386 COLEBROOK NH
2018-02-07 603-409-2XXX 2000–2999Assigned BELL ATLANTIC MOBILE, INC 6386 LACONIA NH
2018-02-02 603-203-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANCHESTER NH
2018-01-24 603-333-3XXX 3000–3999Assigned PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 927H CONCORD NH
2018-01-08 603-270-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 SUNCOOK NH
2018-01-08 603-270-5XXX 5000–5999Assigned BELL ATLANTIC MOBILE, INC 6386 SUNCOOK NH
2018-01-05 603-782-9XXX 9000–9999Assigned ONVOY, LLC - NH 637E MANCHESTER NH
2018-01-05 603-935-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 MANCHESTER NH
2017-12-28 603-368-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 PORTSMOUTH NH
2017-12-28 603-368-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 PORTSMOUTH NH
2017-12-28 603-368-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 PORTSMOUTH NH
2017-12-28 603-368-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 PORTSMOUTH NH
2017-12-27 603-333-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CONCORD NH
2017-12-22 603-484-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2017-12-19 603-901-9XXX 9000–9999Assigned UNITED STATES CELLULAR - NH 6290 CONWAY 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.