NumberResearchThousands-blocks in 937-452
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 937-452 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
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 937-452-0XXX | 0000–0999 | Reserved | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | CAMDEN | OH |
| — | 937-452-1XXX | 1000–1999 | Reserved | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | CAMDEN | OH |
| 2005-02-10 | 937-452-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | CAMDEN | OH |
| — | 937-452-3XXX | 3000–3999 | Reserved | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | CAMDEN | OH |
| 2013-10-25 | 937-452-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | CAMDEN | OH |
| 2014-05-05 | 937-452-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CAMDEN | OH |
| 2006-10-18 | 937-452-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CAMDEN | OH |
| — | 937-452-7XXX | 7000–7999 | Reserved | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | CAMDEN | OH |
| 2020-02-05 | 937-452-8XXX | 8000–8999 | Assigned | CINCINNATI BELL EXTENDED TERRITORIES LLC - OH | 309B | CAMDEN | OH |
| — | 937-452-9XXX | 9000–9999 | Reserved | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | CAMDEN | 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.