"most extensive network" is correct and usable in written English.
It is typically used to describe a resource that is widespread and large in scope. For example: "Amazon has the most extensive network of distribution centers of any online retailer."
But while many people in the communications business -- including those at Equant's competitors -- acknowledge that Equant probably has the world's most extensive network, the quality and capacity of that network have been questioned.
Length: Start/finish: Difficulty: Route: New maps: Route notes: Much work has been done over the past two years to raise Dalby Forest's mountain biking reputation - the aim is to develop England's most extensive network of purpose-built trails here.
It investigates how German teachers could be legendary for their sarcasm and harsh methods but support the world's most vigorous school reform movement and most extensive network of youth clubs.
Al Jazeera and Al Arabiya, which have provided some of the most extensive network coverage of the revolt, said their journalists had been hounded from the street and from vantage points above the square where their cameras had been placed.
Several people said there would be strenuous efforts to restore the bank's standing because it was the nation's largest and had the most extensive network of branch offices and a contract to pay 250,000 government salaries including those of the army, the police and teachers.
Although it's a tiresome cliché to repeat that Britain has the best of this and the best of that in the world, there is no doubt at all that Britain does possess the most extensive network of amateur wildlife observers anywhere on the planet, and that our flora and fauna are known better and in greater detail than anywhere else.
Aeroméxico (00 52 51 33 40 00; aeromexico.com ) and Mexicana have the most extensive networks of routes.
Most towns are connected by state-owned railroad systems, one of the most extensive networks in the world.
A few months later, on August 30, with the support of the government, the combine merged with another line, Compagnie Générale Aéropostale (founded 1919), to form Air France, which in the years before World War II developed one of the most extensive networks in Europe.
It also has one of the most extensive networks of bike lanes in the country, with 75 miles added since 2011.
It became a full member on 15 November 2010, adding to Oneworld one of the most extensive networks covering Russia and the Commonwealth of Independent States (CIS).
