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 |
|---|---|---|---|---|---|---|---|
| 2015-12-18 | 603-402-6XXX | 6000–6999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | NASHUA | NH |
| 2015-12-14 | 603-417-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | NASHUA | NH |
| 2015-12-10 | 603-408-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BERLIN | NH |
| 2015-12-10 | 603-408-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BERLIN | NH |
| 2015-12-03 | 603-215-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BERLIN | NH |
| 2015-11-16 | 603-365-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | MERRIMACK | NH |
| 2015-11-12 | 603-941-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | WOLFEBORO | NH |
| 2015-11-11 | 603-507-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NH |
| 2015-11-11 | 603-952-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SALEM | NH |
| 2015-11-09 | 603-260-8XXX | 8000–8999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | DERRY | NH |
| 2015-11-05 | 603-395-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | EXETER | NH |
| 2015-11-05 | 603-417-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | NASHUA | NH |
| 2015-11-05 | 603-910-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | HAMPTON | NH |
| 2015-11-04 | 603-309-6XXX | 6000–6999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | NEWPORT | NH |
| 2015-10-29 | 603-389-7XXX | 7000–7999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | DURHAM | NH |
| 2015-10-29 | 603-957-2XXX | 2000–2999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | PORTSMOUTH | NH |
| 2015-10-19 | 603-678-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LEBANON | NH |
| 2015-10-14 | 603-409-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LACONIA | NH |
| 2015-10-08 | 603-417-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NASHUA | NH |
| 2015-10-05 | 603-200-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | NEWMARKET | NH |
| 2015-10-01 | 603-775-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | EXETER | NH |
| 2015-09-25 | 603-380-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | PORTSMOUTH | NH |
| 2015-09-24 | 603-895-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | RAYMOND | NH |
| 2015-09-24 | 603-931-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | CONCORD | NH |
| 2015-09-24 | 603-931-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | CONCORD | NH |
| 2015-09-17 | 603-266-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | TILTON | NH |
| 2015-09-16 | 603-213-3XXX | 3000–3999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | MILFORD | NH |
| 2015-09-10 | 603-400-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HOLLIS | NH |
| 2015-09-04 | 603-417-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | NASHUA | NH |
| 2015-09-03 | 603-757-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | KEENE | NH |
| 2015-09-02 | 603-782-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | MANCHESTER | NH |
| 2015-08-27 | 603-287-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | CLAREMONT | NH |
| 2015-08-27 | 603-338-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | KEENE | NH |
| 2015-08-25 | 603-263-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH | 7778 | MANCHESTER | NH |
| 2015-08-20 | 603-678-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | LEBANON | NH |
| 2015-07-31 | 603-270-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | SUNCOOK | NH |
| 2015-07-31 | 603-395-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | EXETER | NH |
| 2015-07-30 | 603-570-1XXX | 1000–1999 | Assigned | FREEDOM RING COMMUNICATIONS, LLC | 8468 | PORTSMOUTH | NH |
| 2015-07-29 | 603-507-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROCHESTER | NH |
| 2015-07-28 | 603-304-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | ENFIELD | NH |
| 2015-07-28 | 603-380-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | PORTSMOUTH | NH |
| 2015-07-21 | 603-931-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - NH | 996E | CONCORD | NH |
| 2015-07-20 | 603-291-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | GREENVILLE | NH |
| 2015-07-20 | 603-328-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | SALEM | NH |
| 2015-07-08 | 603-215-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH | 7778 | BERLIN | NH |
| 2015-07-06 | 603-814-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | SEABROOK | NH |
| 2015-06-24 | 603-229-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | CONCORD | NH |
| 2015-06-23 | 603-509-8XXX | 8000–8999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | ROCHESTER | NH |
| 2015-06-01 | 603-273-8XXX | 8000–8999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | LACONIA | NH |
| 2015-05-26 | 603-931-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH | 7778 | 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.