Hot on the heels of Telecom New Zealand's major XT 3G network outage, its legacy CDMA network has also gone down.
Telecom spokesperson Katherine Murphy said the 9am outage lasted just over half an hour and blamed a hardware fault.
Murphy added that customer impact was limited thanks to overlapping coverage and Telecom backup procedures.
Some 32 cell sites were affected, scattered across Northland, Auckland, Lower Hutt plus parts of the South Island, according to Telecom spokesperson Ian Bonnar.
The network vendor for both the XT network and the CDMA network was Alcatel-Lucent.