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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2012-04-05 603-452-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 CONWAY NH
2012-04-05 603-974-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 PLAISTOW NH
2012-03-28 603-263-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 MANCHESTER NH
2012-03-21 603-570-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 PORTSMOUTH NH
2012-03-20 603-336-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 HINSDALE NH
2012-03-16 603-327-9XXX 9000–9999Assigned BELL ATLANTIC MOBILE, INC 6386 SALEM NH
2012-03-16 603-715-6XXX 6000–6999Assigned BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
2012-03-16 603-757-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 KEENE NH
2012-03-06 603-716-4XXX 4000–4999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2012-03-06 603-716-5XXX 5000–5999Assigned BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
2012-03-06 603-748-8XXX 8000–8999Assigned BELL ATLANTIC MOBILE, INC 6386 WARNER NH
2012-02-29 603-251-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J CHARLESTN NH
2012-01-24 603-609-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER NH
2012-01-24 603-854-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANCHESTER NH
2012-01-12 603-702-5XXX 5000–5999Assigned BELL ATLANTIC MOBILE, INC 6386 KINGSTON NH
2011-12-27 603-820-7XXX 7000–7999Assigned METROPCS, INC. 5562 MERRIMACK NH
2011-12-21 603-814-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 SEABROOK NH
2011-11-22 603-787-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 WOODSVILLE NH
2011-11-21 603-773-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J EXETER NH
2011-11-08 603-583-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 EXETER NH
2011-11-04 603-583-7XXX 7000–7999Assigned BELL ATLANTIC MOBILE, INC 6386 EXETER NH
2011-10-25 603-964-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J RYE BEACH NH
2011-10-24 603-324-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 NASHUA NH
2011-10-24 603-421-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 DERRY NH
2011-10-12 603-422-4XXX 4000–4999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 PORTSMOUTH NH
2011-10-12 603-422-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 PORTSMOUTH NH
2011-09-30 603-263-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 MANCHESTER NH
2011-09-30 603-400-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HOLLIS NH
2011-09-29 603-508-5XXX 5000–5999Assigned METROPCS, INC. 5562 PELHAM NH
2011-09-22 603-306-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEBANON NH
2011-09-22 603-793-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 EXETER NH
2011-09-22 603-854-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANCHESTER NH
2011-09-22 603-854-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANCHESTER NH
2011-09-14 603-324-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J NASHUA NH
2011-09-09 603-306-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J LEBANON NH
2011-09-07 603-593-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 JAFFREY NH
2011-09-06 603-812-3XXX 3000–3999Assigned BELL ATLANTIC MOBILE, INC 6386 PORTSMOUTH NH
2011-09-01 603-400-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K HOLLIS NH
2011-08-19 603-721-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J MILFORD NH
2011-08-17 603-439-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 KEENE NH
2011-08-17 603-841-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SOMERSWTH NH
2011-08-16 603-200-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J NEWMARKET NH
2011-08-03 603-341-2XXX 2000–2999Assigned BELL ATLANTIC MOBILE, INC 6386 MERRIMACK NH
2011-08-03 603-903-8XXX 8000–8999Assigned BELL ATLANTIC MOBILE, INC 6386 KEENE NH
2011-07-26 603-943-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J NASHUA NH
2011-07-26 603-973-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NH
2011-07-22 603-272-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PIERMONT NH
2011-07-22 603-721-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MILFORD NH
2011-07-22 603-989-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PIKE NH
2011-07-21 603-243-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WOODSVILLE 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.