NumberResearchRecent thousands-block assignments
9 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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
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
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2006-10-19 | 603-262-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | MERRIMACK | NH |
| 2006-10-19 | 603-354-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | KEENE | NH |
| 2006-10-19 | 603-445-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | NO WALPOLE | NH |
| 2006-10-19 | 603-487-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | NEW BOSTON | NH |
| 2006-10-19 | 603-508-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | PELHAM | NH |
| 2006-10-19 | 603-593-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | JAFFREY | NH |
| 2006-10-19 | 603-709-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | PLAINFIELD | NH |
| 2006-10-19 | 603-763-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | SUNAPEE | NH |
| 2006-10-19 | 603-784-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | PETERBROGH | NH |
| 2006-10-19 | 603-865-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | NEWPORT | NH |
| 2006-10-19 | 603-904-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | WALPOLE | NH |
| 2006-10-18 | 603-504-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | CLAREMONT | NH |
| 2006-10-18 | 603-525-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | HANCOCK | NH |
| 2006-10-18 | 603-632-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | ENFIELD | NH |
| 2006-10-18 | 603-671-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | FRANKLIN | NH |
| 2006-10-18 | 603-768-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | DANBURY | NH |
| 2006-10-18 | 603-826-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | CHARLESTN | NH |
| 2006-10-18 | 603-831-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | GREENFIELD | NH |
| 2006-10-18 | 603-835-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | ALSTEAD | NH |
| 2006-10-13 | 603-275-5XXX | 5000–5999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | DERRY | NH |
| 2006-10-10 | 603-988-2XXX | 2000–2999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | PORTSMOUTH | NH |
| 2006-10-10 | 603-988-3XXX | 3000–3999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | PORTSMOUTH | NH |
| 2006-10-05 | 603-570-2XXX | 2000–2999 | Assigned | FREEDOM RING COMMUNICATIONS, LLC | 8468 | PORTSMOUTH | NH |
| 2006-10-04 | 603-238-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NH | 4017 | PLYMOUTH | NH |
| 2006-10-04 | 603-253-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CENTER HBR | NH |
| 2006-10-04 | 603-301-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CTROSSIPEE | NH |
| 2006-10-04 | 603-452-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CONWAY | NH |
| 2006-10-04 | 603-459-5XXX | 5000–5999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | NASHUA | NH |
| 2006-10-04 | 603-703-4XXX | 4000–4999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | MANCHESTER | NH |
| 2006-10-04 | 603-726-1XXX | 1000–1999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | CAMPTON | NH |
| 2006-10-04 | 603-733-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | NO CONWAY | NH |
| 2006-10-04 | 603-953-5XXX | 5000–5999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | DOVER | NH |
| 2006-09-28 | 603-518-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | MANCHESTER | NH |
| 2006-09-22 | 603-905-0XXX | 0000–0999 | Assigned | OTEL TELEKOM, INC. - NH | 9827 | BARRINGTON | NH |
| 2006-09-14 | 603-369-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | CONCORD | NH |
| 2006-09-14 | 603-369-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | CONCORD | NH |
| 2006-09-14 | 603-501-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PORTSMOUTH | NH |
| 2006-09-12 | 603-203-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MANCHESTER | NH |
| 2006-09-07 | 603-545-1XXX | 1000–1999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | CONCORD | NH |
| 2006-09-07 | 603-703-2XXX | 2000–2999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | MANCHESTER | NH |
| 2006-09-07 | 603-707-2XXX | 2000–2999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | MEREDITH | NH |
| 2006-09-07 | 603-831-3XXX | 3000–3999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | GREENFIELD | NH |
| 2006-09-06 | 603-617-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | DOVER | NH |
| 2006-09-06 | 603-676-5XXX | 5000–5999 | Assigned | AT&T - LOCAL | 7421 | HANOVER | NH |
| 2006-08-25 | 603-283-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | KEENE | NH |
| 2006-08-25 | 603-601-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | HAMPTON | NH |
| 2006-08-23 | 603-707-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - NH | 996E | MEREDITH | NH |
| 2006-08-16 | 603-216-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | DERRY | NH |
| 2006-08-16 | 603-852-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | KEENE | NH |
| 2006-08-15 | 603-219-7XXX | 7000–7999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | CONCORD | 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.