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
2020-11-05 603-842-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER NH
2020-11-05 603-866-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER NH
2020-11-05 603-866-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER NH
2020-11-05 603-866-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER NH
2020-10-27 603-519-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 EXETER NH
2020-10-22 603-212-1XXX 1000–1999Assigned ONVOY, LLC - NH 637E SALEM NH
2020-10-12 603-453-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 HAMPSTEAD NH
2020-10-09 603-301-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 CTROSSIPEE NH
2020-10-07 603-451-4XXX 4000–4999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CONCORD NH
2020-10-05 603-403-2XXX 2000–2999Assigned BELL ATLANTIC MOBILE, INC 6386 ROCHESTER NH
2020-10-02 603-600-7XXX 7000–7999Assigned ONVOY, LLC - NH 637E MANCHESTER NH
2020-10-01 603-288-6XXX 6000–6999Assigned PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 927H NASHUA NH
2020-10-01 603-497-1XXX 1000–1999Assigned BELL ATLANTIC MOBILE, INC 6386 GOFFSTOWN NH
2020-09-30 603-600-3XXX 3000–3999Assigned PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 927H MANCHESTER NH
2020-09-30 603-609-9XXX 9000–9999Assigned PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 927H DOVER NH
2020-09-25 603-331-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 COLEBROOK NH
2020-09-25 603-680-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 HILLSBORO NH
2020-09-25 603-739-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 NOWOODSTOK NH
2020-09-22 603-600-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H MANCHESTER NH
2020-09-22 603-999-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H SALEM NH
2020-09-15 603-255-9XXX 9000–9999Assigned NUSO, LLC 478J MANCHESTER NH
2020-09-15 603-600-6XXX 6000–6999Assigned ONVOY, LLC - NH 637E MANCHESTER NH
2020-09-14 603-288-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2020-09-14 603-288-8XXX 8000–8999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2020-09-14 603-288-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2020-09-14 603-484-2XXX 2000–2999Assigned BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
2020-09-09 603-852-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 KEENE NH
2020-08-31 603-847-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SULLIVAN NH
2020-08-31 603-847-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SULLIVAN NH
2020-08-25 603-451-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CONCORD NH
2020-08-25 603-800-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MEREDITH NH
2020-08-24 603-702-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 KINGSTON NH
2020-08-20 603-255-7XXX 7000–7999Assigned ONVOY, LLC - NH 637E MANCHESTER NH
2020-08-17 603-607-1XXX 1000–1999Assigned NUSO, LLC 478J WCHESTEFLD NH
2020-08-04 603-406-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
2020-07-29 603-287-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 CLAREMONT NH
2020-07-27 603-270-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 SUNCOOK NH
2020-07-13 603-605-5XXX 5000–5999Assigned BELL ATLANTIC MOBILE, INC 6386 DOVER NH
2020-07-01 603-665-0XXX 0000–0999Assigned ONVOY, LLC - NH 637E MANCHESTER NH
2020-06-23 603-685-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H SALEM NH
2020-06-23 603-685-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H SALEM NH
2020-06-23 603-685-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H SALEM NH
2020-06-16 603-500-0XXX 0000–0999Assigned FRACTEL, LLC 965H TILTON NH
2020-06-16 603-500-5XXX 5000–5999Assigned FRACTEL, LLC 965H TILTON NH
2020-06-16 603-900-0XXX 0000–0999Assigned FRACTEL, LLC 965H NEWPORT NH
2020-06-16 603-900-9XXX 9000–9999Assigned FRACTEL, LLC 965H NEWPORT NH
2020-06-11 603-212-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 SALEM NH
2020-06-11 603-977-7XXX 7000–7999Assigned FRACTEL, LLC 965H ANDOVER NH
2020-06-02 603-255-5XXX 5000–5999Assigned ONVOY, LLC - NH 637E MANCHESTER NH
2020-06-01 603-600-0XXX 0000–0999Assigned COMMIO, LLC 939H MANCHESTER 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.