Thousands of Victorians have had their phone and internet connections disconnected after several telecommunications companies went into administration on Friday.

It is estimated that as many as 10,000 people have had their access to phone and Internet disconnected.

Businesses and residents on Phillip Island, who who were connected via iBoss International, are among those affected.

Waterfront Computers, a service provider based on the island, reported that about 500 internet and 300 phone of its customers had been disconnected.

“We’re in disaster mode here,” owner Steve Murphy said. “Unfortunately these things take time to fix. It’s been affecting our business massively.”