I think there is a telephone area code, throughout the world.
> > On 01 March 2017 at 21:37 Richard Wordingham > <[email protected]> wrote: > > > On Wed, 1 Mar 2017 12:56:23 -0800 > Jean Aurambault <[email protected]> wrote: > > > I'm wondering if there is any standard that defines a universal city > > id (similar to country codes). > > ISO 3166-2 defines codes for some cities, but its uneven. However, > what's a city? Does Constantinople exist? > > Richard. >
