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SIP Affinity is a SIP Trunk and VOIP Provider

We are a new kind of VOIP service provider... we make business telephone service simple.

Our reliable and powerful VOIP calling platform offers quality you can count on for critical business communication. We offer a complete SIP calling solution that includes inbound, outbound, international, toll free, E911, caller ID, caller name (CNAM) and LNP at extremely competative rates.

All VOIP services can be managed in real time using our sophisticated web portal. Say good bye to VOIP headaches and hello to savings with SIP Affinity.

Learn More About Our VOIP Services

Instant Account Activation. Free Startup Credit.

Need a SIP Trunk fast? Open an online account now and start making calls in as little as five minutes. Port your existing numbers in as little as five days. Order new DIDs instantly.

Signup Now for Free Test Credits

Need help with setup or want to talk with someone first? Contact us.

Partner With Us


We partner with value added resellers and application developers. Leverage our strong business and VOIP expertise to create a profitable business and avoid costly errors. SIP Affinity can provide you with a complete product set, immediate capabilities, and guaranteed customer satisfaction. Our wholesale VOIP and SIP Trunk services are globally available with a high quality of service.

Check our national U.S. coverage areas for local number service.

View VOIP Coverage Areas

Got calls? We've got minutes. No commitment. Great prices. Pay as you go.

Inbound Calling
Local DID

$ 0.0120
Tollfree DID

$ 0.0290
Outbound Calling

$ 0.0120

$ 0.0120