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
2013-01-02 603-722-8XXX 8000–8999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2013-01-02 603-782-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2012-12-27 603-307-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J NO CONWAY NH
2012-12-14 603-200-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 NEWMARKET NH
2012-12-13 603-601-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 HAMPTON NH
2012-12-10 603-402-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J NASHUA NH
2012-11-30 603-410-8XXX 8000–8999Assigned CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CONCORD NH
2012-11-30 603-470-1XXX 1000–1999Assigned CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CONCORD NH
2012-11-30 603-470-2XXX 2000–2999Assigned CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CONCORD NH
2012-11-30 603-573-2XXX 2000–2999Assigned CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CONCORD NH
2012-11-30 603-573-7XXX 7000–7999Assigned CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CONCORD NH
2012-11-15 603-294-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J PORTSMOUTH NH
2012-11-13 603-587-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CANDIA NH
2012-11-07 603-537-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 DERRY NH
2012-11-02 603-273-2XXX 2000–2999Assigned BELL ATLANTIC MOBILE, INC 6386 LACONIA NH
2012-11-02 603-554-0XXX 0000–0999Assigned BELL ATLANTIC MOBILE, INC 6386 MILFORD NH
2012-11-02 603-918-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 HAMPTON NH
2012-10-11 603-366-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LACONIA NH
2012-10-11 603-777-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 EXETER NH
2012-10-02 603-331-5XXX 5000–5999Assigned BELL ATLANTIC MOBILE, INC 6386 COLEBROOK NH
2012-10-02 603-397-8XXX 8000–8999Assigned BELL ATLANTIC MOBILE, INC 6386 DURHAM NH
2012-10-02 603-421-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 DERRY NH
2012-10-01 603-729-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J TILTON NH
2012-09-24 603-354-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K KEENE NH
2012-09-24 603-939-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K EASTCONWAY NH
2012-09-11 603-952-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 SALEM NH
2012-09-11 603-952-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NH 4017 SALEM NH
2012-09-07 603-943-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J NASHUA NH
2012-09-06 603-530-1XXX 1000–1999Assigned BELL ATLANTIC MOBILE, INC 6386 BRISTOL NH
2012-08-23 603-277-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HANOVER NH
2012-08-23 603-729-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TILTON NH
2012-08-23 603-973-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NH
2012-08-15 603-285-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J DOVER NH
2012-08-13 603-782-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J MANCHESTER NH
2012-08-13 603-782-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MANCHESTER NH
2012-08-03 603-325-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 NEW BOSTON NH
2012-08-03 603-730-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 NO CONWAY NH
2012-08-03 603-923-2XXX 2000–2999Assigned BELL ATLANTIC MOBILE, INC 6386 ROCHESTER NH
2012-08-03 603-923-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NH
2012-07-30 603-215-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K BERLIN NH
2012-07-30 603-217-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K BRISTOL NH
2012-07-30 603-238-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K PLYMOUTH NH
2012-07-30 603-253-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K CENTER HBR NH
2012-07-30 603-323-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K TAMWORTH NH
2012-07-30 603-367-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K MADISON NH
2012-07-30 603-374-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K BARTLETT NH
2012-07-30 603-383-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K JACKSON NH
2012-07-30 603-392-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K WINCHESTER NH
2012-07-30 603-473-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K MILTON ML NH
2012-07-30 603-476-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K CTRSANDWIH 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.