NumberResearchThousands-blocks in 603-414
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 603-414 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 603 blocks
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 |
|---|---|---|---|---|---|---|---|
| 2024-06-07 | 603-414-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | SUNAPEE | NH |
| — | 603-414-1XXX | 1000–1999 | Available | SUNAPEE | NH | ||
| 2016-06-03 | 603-414-2XXX | 2000–2999 | Assigned | TDS METROCOM, LLC | 520K | SUNAPEE | NH |
| 2022-09-02 | 603-414-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | SUNAPEE | NH |
| — | 603-414-4XXX | 4000–4999 | Available | SUNAPEE | NH | ||
| 2025-02-17 | 603-414-5XXX | 5000–5999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | SUNAPEE | NH |
| 2021-03-24 | 603-414-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - NH | 8299 | SUNAPEE | NH |
| — | 603-414-7XXX | 7000–7999 | Reserved | UNITED STATES CELLULAR - NH | 6290 | SUNAPEE | NH |
| 2026-09-10 | 603-414-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | SUNAPEE | NH |
| — | 603-414-9XXX | 9000–9999 | Available | SUNAPEE | 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.