IN VoIP services in 13 European countries over our award-winning network

Leverage your VoIP investments with Colt’s Service Provider Portfolio. With a single VoIP connectivity manage all your inbound traffic for your Intelligent Network (IN) services across Europe. We collect your IN VoIP calls (Freephone, Shared Cost, or IN Geo) in 13 European countries and deliver them to your VoIP platform over our award-winning carrier-grade Network.



The Pan-European partner of choice for expertise and flexibility

Cost Effective

Better manage costs with one Pan-European partner for all your IN service numbers. Our tools also make it easy to manage and bill.


With more than 20 years’ regulatory experience, and our award-winning network, we are the European partner of choice for IN service numbers.


Don’t be constricted by your partner. We help you create the best service for you, by offering a choice of VoIP connectivity and IN service numbers.

Slice 1

Amanda Thomas


As VoIP gains more acceptance and demand increases, we’re confident that Colt is well equipped to accommodate our growth and will continue to provide us with the excellent support we always receive.

Full visibility and control of your IN services


Our IN services are regulatory compliant and support all country specific rules and local laws across Europe.


It’s important for you to be able to maintain control. Our B2B interface, Cocom, gives resellers twice daily unrated Call Detail Records (CDRs).


Scale with confidence. Our IN services can support high-volume traffic over a single IP connectivity for all your target countries.

Customers interested in our DCA service also looked at:

How To Contact Us

Arrange a consultation with a specialist.


Live Chat is open 9am - 5pm Monday to Friday

Chat with us

Speak with a specialist today.

+44 (0) 20 7863 5510