ENUM Products and Services
e164.org - Free ENUM provider, SIP compatible.
Enum2go Ltd - Enum2go Ltd is a UK based company offering multi-media and telephone domain registration services. Enum2Go does not offer SIP services; so the ENUM domain holder is free to contact a SIP provider
Kapsch CarrierCom - SIP Client software and ENUM Services
My SIP Switch - SIP Switch is an online call management application; enabling you to use multiple SIP providers services from one piece of hardware and to manage all your calls on the fly: hang up; transfer; forward
NetNumber - Secure, reliable, ENUM-compliant directory services for the Internet-Telephony industry.
NeuStar - ENUM Public Trial
Sentiro - If you are an ITSP, our ENUM management solution provides you with the platform to deploy Voice over IP services with minimal investment. A cost effective and scalable hosted solution, compliant with SIP, H323, IAX, MGCP.
Tekea AB - ENUM service and DNS service for SIP users
The Voice Peering Fabric - The VPF ENUM Registry allows organizations to terminate calls between one another at no termination, creating a "centrex" like calling between one another.
Telcordia - Number portability Solution
Verisign - WebNum service
Voxeo IVR - Voxeo VoiceCenter is a comprehensive, SIP / VOIP conferencing + IVR solution including full support for VoiceXML, CCXML, and ENUM.