NumberResearchThousands-blocks in 937-640
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 937-640 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 937 blocks
Most active assignees, all time — NPA 937
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2012-03-06 | 937-640-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAYTON | OH |
| 2014-09-26 | 937-640-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DAYTON | OH |
| 2012-03-06 | 937-640-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAYTON | OH |
| 2012-03-08 | 937-640-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | DAYTON | OH |
| — | 937-640-4XXX | 4000–4999 | Reserved | OHIO BELL TEL CO | 9321 | DAYTON | OH |
| — | 937-640-5XXX | 5000–5999 | Reserved | OHIO BELL TEL CO | 9321 | DAYTON | OH |
| 2014-04-15 | 937-640-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DAYTON | OH |
| — | 937-640-7XXX | 7000–7999 | Reserved | OHIO BELL TEL CO | 9321 | DAYTON | OH |
| — | 937-640-8XXX | 8000–8999 | Reserved | OHIO BELL TEL CO | 9321 | DAYTON | OH |
| — | 937-640-9XXX | 9000–9999 | Reserved | OHIO BELL TEL CO | 9321 | DAYTON | OH |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.