ONO was a Spanish broadband communication and entertainment company, delivering integrated telephone, television and Internet services to its residential customers.

Before commencing its operations, ONO's then-parent company Cableuropa (founded in 1992) took part in a series of competitive tenders which were called after the coming into force of Spain's General Telecommunications by Cable Act 42/95.

From 1996 to 1998, ONO was awarded the licenses to provide cable television and telecommunications services in the regions of Valencia, Castellon, Alicante, Murcia, Cádiz, Huelva, Cantabria, Majorca and Albacete.

In November 2005, ONO closed the acquisition of 100% of the telecoms company Auna Tlc, thereby consolidating its presence as Spain's leading broadband communications and entertainment company and extending its services to the communities of Aragon, Andalusia (excluding Cadiz and Huelva, which already belonged to ONO), the Canary Islands, Catalonia, La Rioja, Madrid and Navarra.

According to data from its web page, at the end of First Quarter of 2008, ONO had 1.8 million clients and it has rolled out a next generation network that covers over 6,850,000 homes and business.

Internet customers can surf the web at speeds of: Thanks to ONO's technology based on Hybrid Fibre-Coaxial, it's possible to enjoy different contents on different TV sets throughout the home.