The CAA confirmed to TTG Super Break had 254 passengers overseas across 113 Atol-protected bookings when it ceased trading, with a further 7,300 passengers due to travel on 3,100 Atol-protected forward bookings.
According to Abta, about 400 Super Break passengers were on holiday with the business either overseas in the UK when the company collapsed and should be able to continue with their holiday as booked.
A further 53,000 passengers across 20,000 forward bookings, the majority of whom are yet to travel, should be able to obtain a refund either through Abta or another financial protection scheme depending on the type of booking.
MORE: Super Break and LateRooms.com cease trading
Malvern placed itself up for sale last week after the historic Indian tour operator defaulted on its Iata billing and settlement plan (BSP) in June.
However, despite drafting in KPMG to oversee a sale, the company confirmed on Thursday it had not been able to find a buyer or secure support from the banking sector.
Cox & Kings UK has confirmed it is not affected by the news as it is a wholly separate business.
Super Break is understood to have employed about 250 people across its bases in Manchester and York.
Abta and the CAA have issued advice to help agents assist their Super Break clients, including those currently travelling with the operator overseas or in the UK, and those with forward bookings.