UPDATE: The ABC has reported Liam Oliver and Dianne Coburn are safe, and have made contact with their family. 

UPDATE: Four members of the same Daylesford family are missing in the Tsum Valley. 

Francis and Jen Comber are travelling with their two young daughters Rani and Neve. 

Mr Comber's mother Dianne Comber said they were waiting on any news of the family. 

"They were trekking in the Tsum Valley, in the earthquake area," she said. 

"No one's heard anything from them yet." 

The family is on a long trip through Asia, leaving Australia in June last year. 

Liam Oliver, 18, was travelling with his aunt Dianne Coburn further North in the Annapurna Valley when the quake hit. 

Both are listed missing on the Red Cross's Family Links site, on which people can log in and let others know they are alive. 

His brother Darcy confirmed to Fairfax Media he was missing but declined to comment. 

Almost 350 Australians are unaccounted for in Nepal following the deadly earthquake which devastated the country, killing more than 1800 and cutting off communications.

There are 549 Australians registered as travelling in Nepal according to the Department of Foreign Affairs and Trade and the Australian embassy has confirmed the safety of more than 200.

Foreign minister Julie Bishop said there were no reports of Australian deaths.

Ms Bishop said damage to infrastructure had made communication difficult but urged families to try to contact their loved ones directly.

EARLIER: A Daylesford teenager is among 11 Australians reported missing after a 7.8  magnitude earthquake in Nepal.

The Red Cross's Family Links website lists Dianne Coburn, 59, and her nephew Liam Oliver, 18, as missing.

Mr Oliver's brother Darcy, who declined to comment, has confirmed the pair are missing in Nepal.

Liam Oliver posted a photo of himself and Ms Coburn on his Facebook page on April 20.

The teen lived in Daylesford and attended Daylesford Secondary College. 

At least 11 Australians have been listed as missing in Nepal following the earthquake which has claimed more than 1300 lives.

​Victorian reserve grade football player Richard Jaroszczuk, 22, is also listed as missing from base camp at Mount Everest.

Among the missing are Zachary Sheridan, the younger brother of Packed to the Rafters star Hugh Sheridan, who reached out on social media to people to pray for his sibling.

According to his listing on the Red Cross Family Links site, the 20-year-old from Adelaide last contacted his family on April 22 from Namche Bazar, described as the gateway to Everest.

Also listed as missing is Sydney-born film industry executive Zyra McAuliffe whose credits include Changi and Crocodile Dundee in Los Angeles.

Her husband, cinematographer Greg De Marigny​, said the 41-year-old had planned to go trekking but believed she was well away from the areas worst affected by the earthquake.

Photo journalist Athena Zelandonii​ is also listed on the website, last contacting family on April 20 from Langtang Valley. According to Ms Zelandonii's Facebook page, the 25-year-old left Australia for an open-ended trip through South East Asia in mid-February and she arrived in Nepal at the beginning of April.

Sydney man Matthew Graves, 24, is also listed as missing. His family last heard from him on April 24 when he was in Pokhara, 200km from Kathmandu.

Perth woman Ballantyne Paige Forder, 20, is believed to have been working in an orphanage in Kathmandu at the time of the quake. Her sister Amanda-Sue Markham has taken to Twitter in a desperate bid to locate her younger sister.

Others listed as missing include 27-year-old Brisbane man Adam Jay Murphy; Dianne Joy Coburn, 59, of Melbourne; Eden Row, 20, of Melbourne; Sydney-born Brisbane woman Samantha McGree, 25; and Taisha-Dayne Reed, 23, of Melbourne.

An Australian born man, 43-year-old Jason Upton, who has been living in the UK is also listed among the missing.

Aid agencies including Oxfam are already sending teams to Nepal to help in the aftermath of the country's deadliest earthquake in more than 80 years.

Oxfam Australia chief executive Helen Szoke says a group of disaster specialists from the UK is flying in with supplies.

"People are gathered in their thousands in open spaces and are scared, as there were several aftershocks," Dr Szoke said in a statement.

"Oxfam staff in Nepal, along with thousands of others, are sleeping outside tonight in football fields and other open spaces because they are the safest place to be."

The Department of Foreign of Affairs has been contacted for comment.

with The Age