NumberResearchThousands-blocks in 443-490
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 443-490 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 443 blocks
Most active assignees, all time — NPA 443
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 443-490-0XXX | 0000–0999 | Available | EDGEWOOD | MD | ||
| 2025-04-08 | 443-490-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EDGEWOOD | MD |
| 2016-07-06 | 443-490-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | EDGEWOOD | MD |
| 2016-07-06 | 443-490-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | EDGEWOOD | MD |
| — | 443-490-4XXX | 4000–4999 | Available | EDGEWOOD | MD | ||
| 2020-11-02 | 443-490-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | EDGEWOOD | MD |
| 2017-09-19 | 443-490-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | EDGEWOOD | MD |
| 2017-09-19 | 443-490-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | EDGEWOOD | MD |
| 2016-11-18 | 443-490-8XXX | 8000–8999 | Assigned | BARR TELL USA, INC. | 964H | EDGEWOOD | MD |
| 2017-09-20 | 443-490-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | EDGEWOOD | MD |
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.