TelstraClear is New Zealand's second-largest telecommunications company and is a wholly owned subsidiary of Telstra

Telstra

Telstra Corporation Limited is an Australian telecommunications and media company, building and operating telecommunications networks and marketing voice, mobile, internet access and pay television products and services....

 Corporation (Australia), with around 400,000 customers.

The company provides residential line rental services, internet services, IT services, security services, cable TV/cable modem and mobile telephone services to 70,000 subscribers on its network in Wellington, Christchurch and Kapiti.

In 2004 TelstraClear began offering residential line HomePlan services including broadband outside those areas where it has its own network, reselling a wholesale product from Telecom New Zealand

Telecom New Zealand

Telecom New Zealand is a New Zealand-wide communications service provider , providing fixed line telephone services, a mobile network, an internet service provider , a major ICT provider to NZ businesses , and a wholesale network infrastructure provider to other NZ CSPs...

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TelstraClear had its beginnings in 1996 with Telstra New Zealand.

Telstra NZ slowly expanded its operations in the business market bundling Telecom New Zealand services distributed as a reseller with its own network services.