NumberResearchRecent thousands-block assignments
17 blocks assigned in February 2026 · from the daily NANPA thousands-block report, 09/19/2026
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, February 2026 — NPA 603
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-02-25 | 603-327-3XXX | 3000–3999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | SALEM | NH |
| 2026-02-25 | 603-351-4XXX | 4000–4999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | GOFFSTOWN | NH |
| 2026-02-25 | 603-472-0XXX | 0000–0999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | BEDFORD | NH |
| 2026-02-25 | 603-916-3XXX | 3000–3999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | MEREDITH | NH |
| 2026-02-19 | 603-501-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PORTSMOUTH | NH |
| 2026-02-18 | 603-218-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MANCHESTER | NH |
| 2026-02-18 | 603-253-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CENTER HBR | NH |
| 2026-02-18 | 603-327-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SALEM | NH |
| 2026-02-18 | 603-420-3XXX | 3000–3999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | MERRIMACK | NH |
| 2026-02-18 | 603-588-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ANTRIM | NH |
| 2026-02-18 | 603-590-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DURHAM | NH |
| 2026-02-18 | 603-718-7XXX | 7000–7999 | Assigned | BELL ATLANTIC MOBILE, INC | 6386 | NASHUA | NH |
| 2026-02-18 | 603-776-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BARNSTEAD | NH |
| 2026-02-18 | 603-859-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NEW DURHAM | NH |
| 2026-02-18 | 603-875-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ALTON | NH |
| 2026-02-18 | 603-877-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NH | 637E | NEW LONDON | NH |
| 2026-02-18 | 603-938-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BRADFORD | NH |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.