NumberResearchThousands-blocks in 740-338
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 740-338 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 740 blocks
Most active assignees, all time — NPA 740
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2007-05-21 | 740-338-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | STCLAIRSVL | OH |
| 2007-05-21 | 740-338-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | STCLAIRSVL | OH |
| 2010-05-19 | 740-338-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - OH | 001F | STCLAIRSVL | OH |
| 2004-08-24 | 740-338-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - OH | 7532 | STCLAIRSVL | OH |
| 2012-09-25 | 740-338-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - OH | 001F | STCLAIRSVL | OH |
| 2019-01-28 | 740-338-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | STCLAIRSVL | OH |
| 2012-03-05 | 740-338-6XXX | 6000–6999 | Assigned | ONVOY, LLC - OH | 464C | STCLAIRSVL | OH |
| 2007-01-04 | 740-338-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | STCLAIRSVL | OH |
| 2006-11-17 | 740-338-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | STCLAIRSVL | OH |
| 2006-11-17 | 740-338-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | STCLAIRSVL | OH |
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.