NumberResearchThousands-blocks in 936-427
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 936-427 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 936 blocks
Most active assignees, all time — NPA 936
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-01-12 | 936-427-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CENTER | TX |
| — | 936-427-1XXX | 1000–1999 | Available | CENTER | TX | ||
| 2014-06-26 | 936-427-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CENTER | TX |
| 2013-12-19 | 936-427-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | CENTER | TX |
| 2015-02-05 | 936-427-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | CENTER | TX |
| 2012-01-13 | 936-427-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CENTER | TX |
| 2022-03-08 | 936-427-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CENTER | TX |
| 2015-12-30 | 936-427-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CENTER | TX |
| 2015-04-21 | 936-427-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CENTER | TX |
| — | 936-427-9XXX | 9000–9999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | CENTER | 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.