TelstraClear customers are to get unmetered access to all MediaWorks websites.
TV3's on-demand service and the MediaWorks family of streaming radio stations will be zero-rated, meaning they won't count towards a customer's monthly data.
"We've always wanted to offer the market unmetered access to the MediaWorks Interactive sites and TelstraClear makes a great partner for this as they have been providing us with telecommunication services for many years," said Siobhan McKenna, MediaWorks' director of interactive.
TelstraClear head of consumer markets Steve Jackson said the company already provided customers with unmetered content on TradeMe, the On3 gaming network, Clernet Video, Ziln and the TelstraClear Steam server.
"We're committed to providing customers with high quality, reliable and good-value Internet and telecommunications services. Earlier this month we announced for our broadband customers increased data at no cost. Now we're making that go even further with more unmetered content."