It is the emergency number for North America. It is free to call and they can request Police, Fire Service, to Ambulance.
Dial 911.
No, 911 is a special case. You just dial 911, even if you dial area+number or 1+area+number for other local calls.
Yeah, dial 911!
Dial 911
There aren't any charges to dial 911.
Call 911 before you start CPR.
Dial 911
If in USA dial 911 If in India dial 100
depends what country you are in. For example, in the UK, you would dial 999 and in the USA you would dial 911.
dial 911 and select cops
In America, you dial 911.
911