NumberResearchThousands-blocks in 361-231
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 361-231 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 361 blocks
Most active assignees, all time — NPA 361
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 361-231-0XXX | 0000–0999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HEBBRONVL | TX |
| — | 361-231-1XXX | 1000–1999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HEBBRONVL | TX |
| — | 361-231-2XXX | 2000–2999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HEBBRONVL | TX |
| 2016-03-15 | 361-231-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | HEBBRONVL | TX |
| 2013-11-25 | 361-231-4XXX | 4000–4999 | Assigned | FOREMOST TELECOMMUNICATIONS CORPORATION - TX | 319D | HEBBRONVL | TX |
| — | 361-231-5XXX | 5000–5999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HEBBRONVL | TX |
| 2016-04-20 | 361-231-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HEBBRONVL | TX |
| 2013-10-10 | 361-231-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HEBBRONVL | TX |
| 2016-05-11 | 361-231-8XXX | 8000–8999 | Assigned | VTX COMMUNICATIONS, LLC | 776A | HEBBRONVL | TX |
| 2017-02-03 | 361-231-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | HEBBRONVL | TX |
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.