One Orcon customer said he was re-connected to the internet within an hour after the fault, while Spark customer Layth Shasha said he was still without internet in Unsworth Heights through to mid-morning.
He said he was frustrated by the lack of information from Spark last night about the outage.
"I'm an IT guy, I understand that issues happen but why don't they put out a small alert... to say there is an outage and an update will come when it's fixed."
North Shore resident Diane Ensoll said she lost internet around 9pm last night, and it wasn't restored until 8am today.
"My husband was working late from home on an email that needed to be sent and we lost all connection."
Mitch Cuevas lives in Grey Lynn and is connected to the fibre optic network through Spark.
He said he lost internet at 9pm last night and the connection wasn't restored when he left the house at 8am today.
"My wife works from home and she has documents and things she needed to access that she couldn't. It definitely caused some problems."
He said he expected better transparency from Spark.
"If you've got a problem, no worries, but don't act like there's no problem."
Meanwhile, Mangere Bridge resident Pat Rossiter said he was concerned that scammers had taken advantage of the Spark outage already.
Mr Rossiter isn't a Spark customer but read the news of the outage online this morning.
He received a phone call from a person with an Asian accent claiming to be a Spark technician, who said his internet connection would be cut for two months.
"I couldn't help myself and burst out with laughter... he didn't finish his pitch," Mr Rossiter said.
Mr Rossiter was concerned that others might fall victim to the scam given the widespread outage.
"They'll be calling other people as we speak," he said.
