Based on the namesake American channel, it primarily aired animated programming from the Warner Bros.

The European feed at the time consisted of four audio tracks, which were in English, Romanian, Hungarian and Polish.

It launched a subfeed intended to air German advertisements and has no Russian rating icons being displayed in its broadcast, differing from the main feed.

[8] Since 10 November 2020, Boomerang has received a Czech licence (RRTV) to ensure the continuation of legal broadcasting in the European Union Directive on Audiovisual Media Services (AVMSD) and the law on the single market after the UK leaves the European Union.

In August 2013, SES Platform Services (later MX1, now part of SES Video) won an international tender by Turner Broadcasting System, to provide playout services for Boomerang, and for Cartoon Network, TNT Glitz, TNT Film and TNT Serie (in both SD and HD) for the German-speaking market, digitization of existing Turner content, and playout for Turner on-demand and catch-up services in Germany, Austria, Switzerland the Benelux region, from November 2013.

[12] Boomerang was launched in English for the Middle East and select African countries in March 2005.

[13] On 5 June, the channel expanded to Europe, with audio tracks for Polish (though partial) and Hungarian viewers.

On 1 August 2007, the channel began broadcasting from the Astra 1K and Hot Bird 7A satellites in CIS and Baltic countries.

[14] In January 2010, Boomerang expanded to Romania, Hungary, the Czech Republic, Slovakia, Croatia, Serbia, and Montenegro, bringing its total distribution to 9.5 million homes.

[20] In late 2005, Turner Broadcasting System Europe reported that they had intended to launch Boomerang in the Nordic region.

On 30 September 2010, it was launched as a channel on Viasat's satellite platform, with the block closing the day before.

The channel had a time shift signal, which retransmitted programming an hour later, called Boomerang +1.

[31] Subsequently, Cartoonito closed its broadcasts on June 30, 2013 together with Cartoon Network Spain, due to the strong Spanish economic crisis, transferring its programming to the DTT channel Boing.