SIP Provider NL
- SIP Provider i4IP (NL)
- SIP Provider Intellinet (BE)
- SIP Provider NFON (NL)
- SIP Provider oneCentral (BE, NL)
- SIP Provider OZMO (NL)
- SIP Provider RoutIT (NL)
- SIP Provider SpeakUp (NL)
- SIP Provider VodafoneZiggo (NL) - Corporate Net over IP
- SIP Provider VodafoneZiggo (NL) - Vodafone One Fix
- SIP Provider VodafoneZiggo (NL) - Whitelabel
- SIP Provider Voiceworks (NL)