API menu

Vonage / Phone Numbers

Reach customers through virtual phone numbers

No more negotiate agreements with regional telco operators

Nexmo is now called Vonage, but there are still references to Nexmo in our URLs, code snippets and message templates.

Vonage's Phone Numbers API offers several programmable number types for customer communication, such as virtual phone numbers, toll free numbers and short codes. No need to negotiate prices with regional telco operators.

How it works

Use and connect the programmable elements of the Phone Numbers API to achieve anonymous communication, interactive voice response systems and smart conference bridges with just a few lines of code. By using the API, you may search, provision, cancel or update virtual numbers anytime, while benefiting from the broadest reach of virtual numbers from across the globe.

supplier logo full vonage
Phone Numbers

GDPR compliance: Yes
SLA: Standard via the KPN Developer Portal


Coverage: Global
Data center location: US & EU
End-to-end encryption: Yes
Scalable infrastructure: Yes

ISO/IEC 27001:2013, 27017:2015 & 27018:2014
ISO 22301:2012 & 31000:2009
SOC 2 & 3 
NIST 800-171

This API helps you to...

icon Generate on-demand QR-codes

Improve user privacy

Connect users by phone without disclosing their phone numbers to improve privacy and avoid off‑platform transactions.

Icon paint template product page KPN bulk

Offer interactive phone responses

Add voice menus to your call flow with a simple Interactive Voice Response (IVR). No need to build and deploy a traditional IVR system.

icon create new services

Increase revenue through call data

Track call meta data for lead generation and marketing campaigns.


Instant provisioning

Phone numbers are now software assets that can be used to instantly build communication tools with just a few lines of code.

Extensive reach

Comprehensive offering of phone numbers and shortcodes, enabling you to reach your target markets reliably.


Local phone numbers from across the globe are easily aquired with a simple and cost-effective API call.

What it costs

Pricing on request

Need help?

Contact our customer service.

Ask your questionFAQs