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Harmonium
James Klein

JK

Agency

James Klein

CEO at Harmonium.

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Email: Not on file.

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Seen at

Affiliate Summit East
Traffic and Conversion Summit

Also at Harmonium

This is the only person we have listed at Harmonium.

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Direct Publishers, Brokers, and Exchanges: Understanding the Tradeoffs in Call Supply
How Benchmarks Help New Sources Get Buyer Confidence

Role: CEO
Company: Harmonium
Category: Agency
LinkedIn: www.linkedin.com/in/james-klein-2a33904
Updated: August 24, 2026

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Dependable Call Exchange LLC compiled this record from attendee and exhibitor materials at industry events. It has not been reviewed or confirmed by the person named, and inclusion here is not a recommendation or endorsement by Dependable Call Exchange. We make no representation about any listed party's quality, performance, traffic, compliance, or reliability.

Contact details are shown partially masked; full values require a free account. Record last updated August 24, 2026.

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Record updated August 24, 2026 · snapshot 20261018T090043Z-unknown

Dependable Call Exchange

Dependable Call Exchange LLC Florida LLC (private, for-profit) 10728 Eveningwood Ct, Trinity, FL 34655, US +1 716-525-5245 · [email protected] https://dependablecalls.com EIN 99-4103401

A B2B pay-per-call exchange — calls routed by vertical, in real time.

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