The N11 codes are 3 digit codes used in the USA for getting help or assistance with a cell phone.
You already know about 411 and 911 to directory and emergency, respectively.
Here is a list for Wikipedia:
https://en.wikipedia.org/wiki/N11_code 2-1-1: Community services and information
3-1-1: Municipal government services, non-emergency number
4-1-1: Directory assistance
5-1-1: Traffic information or police non-emergency services
6-1-1: Telephone company (telco) customer service and repair
7-1-1: TDD and Relay Services for the deaf and hard of hearing
8-1-1: Underground public utility location (United States);[1] non-emergency health information and services (Canada)
9-1-1: Emergency services (police, fire, ambulance and rescue services)
Handy when you need some help.
