NumberResearchThousands-blocks in 640-345
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 640-345 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 640 blocks
Most active assignees, all time — NPA 640
New assignments by month
Sep 2026
Aug 2026
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Jun 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-12-07 | 640-345-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | SEAIS CITY | NJ |
| — | 640-345-1XXX | 1000–1999 | Available | SEAIS CITY | NJ | ||
| — | 640-345-2XXX | 2000–2999 | Available | SEAIS CITY | NJ | ||
| 2022-02-08 | 640-345-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SEAIS CITY | NJ |
| 2022-02-08 | 640-345-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SEAIS CITY | NJ |
| 2023-11-29 | 640-345-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | SEAIS CITY | NJ |
| 2021-08-17 | 640-345-6XXX | 6000–6999 | Assigned | FRACTEL, LLC | 965H | SEAIS CITY | NJ |
| 2023-01-06 | 640-345-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | SEAIS CITY | NJ |
| 2023-01-06 | 640-345-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | SEAIS CITY | NJ |
| 2023-01-06 | 640-345-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | SEAIS CITY | NJ |
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.