Afghanistan's main airport is at a standstill as the country grapples with the fallout of a nationwide internet shutdown imposed by the Taliban government.

The Taliban has yet to give an official reason for the decision, which took effect on Monday, but did say it would last until further notice. The UN said it risked inflicting significant harm.

Communication within Afghanistan, and out to the wider world, has been severely affected, as have essential services - including banking and payments - and access to online education, a lifeline for many women and girls.

Kabul airport, meanwhile, was nearly deserted, according to one resident, with no evidence of planes arriving or leaving.

#Flight tracking service Flightradar24 showed that a handful of incoming and outgoing flights on Tuesday had been cancelled. Many more simply had their status marked as unknown.

One passenger who planned to fly into Kabul International Airport on Tuesday was told there would be no flights until Thursday at the earliest.

Another local said all flights from Kabul airport had been cancelled since Monday evening.

He added that life in Kabul seems to be normal, but added that there was no communication at all across the country.

The United Nations mission in Afghanistan called on the Taliban authorities to immediately and fully restore nationwide internet and telecommunications access.

The cut in access has left Afghanistan almost completely cut off from the outside world and risks inflicting significant harm on the Afghan people, including by threatening economic stability and exacerbating one of the world's worst humanitarian crises.

The Taliban government have for weeks been severing fibre-optic internet connections across several provinces.

Najibullah, a 42-year-old shopkeeper in Kabul, told news agency AFP that residents felt like they were left blind without phones and internet.

All our business relies on mobiles. The deliveries are with mobiles. It's like a holiday, everyone is at home. The market is totally frozen.

International news agencies also say they have lost contact with offices in Kabul due to the blackout. Mobile internet and satellite TV services have also been severely disrupted.

Tolo News, a privately owned Afghan news channel, urged people to follow its social media pages for updates due to expected disruptions to its networks.

In an earlier post on social network Mastodon.social, Netblocks reported that the country was in the midst of a total internet blackout as Taliban authorities move to implement morality measures.

Reports indicate that the Taliban ban on fibre-optic internet is part of a wider restriction campaign since their return to power, drastically affecting women's access to education and communication.