Zentrunk Cloud-Based SIP Trunking

Global connectivity and unlimited concurrent calls with flexible pay-as-you-go pricing. Connect your VoIP infrastructure in minutes.

Zentrunk Sip trunking

Zentrunk is Quality SIP Trunking

We've built and optimized our network infrastructure so that you don't have to


Guaranteed Quality

Your calls are terminated through one-hop local carriers to give you low post-dial delay, guaranteed features such as CLI and DTMF, and no out-of-region audio looping.


Global Infrastructure

Our PoPs are located in seven locations (California, Virginia, Frankfurt, Mumbai, Singapore, Sydney, São Paulo ) across five continents to ensure that you experience low latency and high voice quality.


High Availability and Uptime

With a redundant infrastructure across multiple geographies and at least three local carrier connections across countries, Zentrunk promises 99.99% uptime.

Zentrunk Outbound


Make Calls to More Than 190 Countries

Connect to mobile or fixed phone numbers globally using your existing VoIP infrastructure.


Multiple Authentication Options

Secure your SIP trunk using IP-based or credentials-based authentication.


Unlimited Concurrent Calls

Scale your outbound calls and experience unlimited concurrent calls at no extra cost.

Zentrunk Inbound


Receive Calls in More Than 70 Countries

Purchase Local, National, Mobile or Toll-Free phone numbers across the globe.


Instantly Provision Phone Numbers

Configure phone numbers with Zentrunk and start receiving calls in minutes.


Unlimited Concurrent Calls

Receive unlimited concurrent calls on your phone numbers at no extra cost.

Robust Feature Set for All Your Business Needs

IP Authentication

IP Authentication

Authenticate and access your SIP trunks using IP authentication or credentials for added security.

Encrypted Trunks

Encrypted Trunks

Secure your trunks with Transport Layer Security (TLS) and Secure Real-Time Transport Protocol (SRTP).

Fraud Protection & Alerts

Fraud Protection and Alerts

Our systems automatically detect and alert you to fraudulent activity on your account.



Interoperate with standard softswitches and IP PBXs.

Self Service Portal

Self-Service Portal

Easily access and manage your account analytics, logs, and SIP trunks.

Separated Trunks

Separated Trunks

Each trunk has a unique SIP domain for easy traffic segmentation and management.

Top reasons why businesses choose Plivo


Proven Quality and Scale

With over a billion API requests every month, our globally distributed direct to carrier network and intelligent routing ensures highest SMS delivery and lowest latency for your calls.


Enterprise Grade Platform

Engineered for high availability, extreme reliability and 99.95% uptime SLA. Privacy Shield and GDPR Compliance means any business can trust Plivo with data privacy and security.


A Team That Truly Cares about Your Success

Our 24x7 premium support and a consultative customer success team, provide you with all the technical guidance and industry expertise you need, when you need it.


Lower Cost of Ownership

Receive discounted pricing from the start with simple usage based pricing where you only pay for what you use. Avail additional discounts with committed usage as you scale.

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