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 |
|---|---|---|---|---|---|---|---|
| 2015-05-18 | 603-932-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | MANCHESTER | NH |
| 2015-05-01 | 603-254-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PLYMOUTH | NH |
| 2015-05-01 | 603-581-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LACONIA | NH |
| 2015-04-30 | 603-395-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | EXETER | NH |
| 2015-04-24 | 603-301-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH | 7778 | CTROSSIPEE | NH |
| 2015-04-24 | 603-832-9XXX | 9000–9999 | Assigned | IDT AMERICA, CORP. - NH | 314C | LACONIA | NH |
| 2015-04-23 | 603-394-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | SO HAMPTON | NH |
| 2015-04-16 | 603-567-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | PETERBROGH | NH |
| 2015-04-15 | 603-417-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | NASHUA | NH |
| 2015-04-15 | 603-722-7XXX | 7000–7999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | MANCHESTER | NH |
| 2015-04-13 | 603-486-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NH | 637E | MANCHESTER | NH |
| 2015-03-31 | 603-230-0XXX | 0000–0999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | CONCORD | NH |
| 2015-03-31 | 603-260-3XXX | 3000–3999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | DERRY | NH |
| 2015-03-31 | 603-273-1XXX | 1000–1999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | LACONIA | NH |
| 2015-03-31 | 603-327-1XXX | 1000–1999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | SALEM | NH |
| 2015-03-31 | 603-513-3XXX | 3000–3999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | CONCORD | NH |
| 2015-03-31 | 603-577-0XXX | 0000–0999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | NASHUA | NH |
| 2015-03-31 | 603-714-7XXX | 7000–7999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | BEDFORD | NH |
| 2015-03-31 | 603-722-4XXX | 4000–4999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | MANCHESTER | NH |
| 2015-03-31 | 603-722-5XXX | 5000–5999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | MANCHESTER | NH |
| 2015-03-31 | 603-841-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | SOMERSWTH | NH |
| 2015-03-24 | 603-693-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | EPPING | NH |
| 2015-03-19 | 603-402-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | NASHUA | NH |
| 2015-03-17 | 603-912-6XXX | 6000–6999 | Assigned | FREEDOM RING COMMUNICATIONS, LLC | 8468 | SALEM | NH |
| 2015-03-16 | 603-383-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH | 7778 | JACKSON | NH |
| 2015-02-26 | 603-309-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | NEWPORT | NH |
| 2015-02-25 | 603-834-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | DOVER | NH |
| 2015-02-24 | 603-854-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | MANCHESTER | NH |
| 2015-02-23 | 603-281-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | NASHUA | NH |
| 2015-02-23 | 603-281-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | NASHUA | NH |
| 2015-02-23 | 603-281-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | NASHUA | NH |
| 2015-02-23 | 603-281-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | NASHUA | NH |
| 2015-02-19 | 603-310-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | BEDFORD | NH |
| 2015-02-19 | 603-836-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | MANCHESTER | NH |
| 2015-02-18 | 603-937-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | MEREDITH | NH |
| 2015-02-04 | 603-379-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | RYE BEACH | NH |
| 2015-02-04 | 603-746-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | CONTOOCOOK | NH |
| 2015-01-29 | 603-306-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LEBANON | NH |
| 2015-01-29 | 603-338-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | KEENE | NH |
| 2015-01-08 | 603-841-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SOMERSWTH | NH |
| 2015-01-02 | 603-229-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | CONCORD | NH |
| 2014-12-29 | 603-260-4XXX | 4000–4999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | DERRY | NH |
| 2014-12-29 | 603-310-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | BEDFORD | NH |
| 2014-12-29 | 603-395-0XXX | 0000–0999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | EXETER | NH |
| 2014-12-29 | 603-815-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | DURHAM | NH |
| 2014-11-24 | 603-461-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | MERRIMACK | NH |
| 2014-11-21 | 603-509-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | ROCHESTER | NH |
| 2014-11-14 | 603-260-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | DERRY | NH |
| 2014-11-12 | 603-328-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | SALEM | NH |
| 2014-11-12 | 603-864-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | NASHUA | 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.