NumberResearchThousands-blocks in 201-731
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 201-731 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 201 blocks
Most active assignees, all time — NPA 201
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 201-731-0XXX | 0000–0999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - NJ | 4804 | ENGLEWOOD | NJ |
| 2005-05-24 | 201-731-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | ENGLEWOOD | NJ |
| 2010-05-21 | 201-731-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | ENGLEWOOD | NJ |
| 2010-03-01 | 201-731-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ENGLEWOOD | NJ |
| 2013-08-15 | 201-731-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NJ | 4804 | ENGLEWOOD | NJ |
| — | 201-731-5XXX | 5000–5999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - NJ | 4804 | ENGLEWOOD | NJ |
| 2010-07-22 | 201-731-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | ENGLEWOOD | NJ |
| 2024-09-23 | 201-731-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ENGLEWOOD | NJ |
| 2010-07-22 | 201-731-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | ENGLEWOOD | NJ |
| 2024-09-18 | 201-731-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ENGLEWOOD | NJ |
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.