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Question

VoIP.ms integration question

  • March 14, 2026
  • 2 replies
  • 6 views
B

Hi,

I cannot seem to get the integration to link my VoIP.ms account.

I have tried multiple username/password combos.

My actual web username/password, the sub-account username and password, API username and password but none let me in. I keep getting an invalid username or password error. The VoIP.ms API requires whitelisting the IP addresses and doesn’t support the user-agent whitelist unfortunately. I asked the AI assistant who provided the following ranges: 44.214.195.64/28,18.246.81.208/28 

Are there other ranges I need to include?

 

2 replies

Troy Tessalone
Zapier Orchestrator & Solution Partner
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  • Troy TessaloneZapier Orchestrator & Solution Partner
  • Zapier Orchestrator & Solution Partner
  • March 16, 2026

Hi ​@ben4217 

Try reaching out to VOIP.ms Support for help with their app and Zap app integration.

⚡ Troy Tessalone - AutomationAce.com | Top Zapier Solution Partner | #1 Zapier Community Contributor
F
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  • Fahad S
  • New
  • March 16, 2026

Hi ​@ben4217 

Most “invalid username/password” errors with VoIP.ms happen when the API credentials are not used — make sure you’re entering the VoIP.ms API Username & API Password, not your web or sub‑account login. Also, VoIP.ms requires IP whitelisting, but Zapier’s outbound IPs are mostly dynamic, so whitelisting just 44.214.195.64/28 and 18.246.81.208/28 may not cover all calls. The reliable way is to use Zapier Static IP or a fixed IP proxy.

Here's the VoIP.ms doc that might help: https://voip.ms/resources/api

If you’re still having trouble, happy to take a look!

And if you'd rather just get it sorted quickly, I offer a free 20-min Zapier troubleshooting call. Book it under Resources on my Zapier Directory profile: https://zapier.com/partnerdirectory/automatemybiz

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