noun: A rapid transit rail transport system, or a train in such systems, generally underground and serving a metropolitan area.
noun: A metropolitan area.
adjective: metropolitan
Definition: Wiktionary.
On 2026-10-10, 326 new domains containing "metro" were registered across 13 extensions.
10,903 in the last 12 months.
Keyword Pulse research for "metro": search demand, how many extensions already use the exact name, the registration trend and recorded sales.