Booking.com is a travel fare aggregator website and travel metasearch engine for lodging reservations. It is owned and operated by and is the primary revenue source of United States-based Booking Holdings. Booking.com is headquartered in Amsterdam. Booking.com was formed when bookings.nl, founded in 1996 by Geert-Jan Bruinsma, merged in 2000 with Bookings Online, founded by Sicco and Alec Behrens, Marijn Muyser and Bas Lemmens, which operated as Bookings.org. The name and URL were changed to Booking.com and Stef Noorden was appointed as its CEO.