NumberResearchThousands-blocks in 939-444
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 939-444 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 939 blocks
Most active assignees, all time — NPA 939
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2020-02-13 | 939-444-0XXX | 0000–0999 | Assigned | LUMEN TECHNOLOGIES PUERTO RICO, LLC | 091J | ROOSEVLTRD | PR |
| 2022-11-22 | 939-444-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | ROOSEVLTRD | PR |
| 2023-11-03 | 939-444-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ROOSEVLTRD | PR |
| 2020-12-11 | 939-444-3XXX | 3000–3999 | Assigned | NEUTRAL TANDEM - PR | 559F | ROOSEVLTRD | PR |
| 2018-12-17 | 939-444-4XXX | 4000–4999 | Assigned | NATURAL G.C. INC. - PR | 985G | ROOSEVLTRD | PR |
| 2021-06-17 | 939-444-5XXX | 5000–5999 | Assigned | LIBERTY COMMUNICATIONS OF PUERTO RICO LLC | 955G | ROOSEVLTRD | PR |
| — | 939-444-6XXX | 6000–6999 | Available | ROOSEVLTRD | PR | ||
| — | 939-444-7XXX | 7000–7999 | Available | ROOSEVLTRD | PR | ||
| — | 939-444-8XXX | 8000–8999 | Available | ROOSEVLTRD | PR | ||
| — | 939-444-9XXX | 9000–9999 | Available | ROOSEVLTRD | PR |
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.