Do you know the American service numbers 9 1 1, 21,31,4 1 1?

9 1 1 is a common alarm number in the United States: fire, domestic violence, crime, car accident, emergency medical situation.

2 1 1 was founded by a non-profit organization in the United States, and it is a national help in the United States. The main services of 2 1 1 include: housing, shelter, resources for the aged, provision of food, clothing, housing and transportation, legal consultation, employment consultation, medical and health consultation, and even "where can I take English classes".

3 1 1 is a non-emergency municipal service line in the United States, and it is the reserve force of 9 1 1. 3 1 1 mainly provides municipal related services, including repairing sidewalks, removing animal carcasses and obstacles on roads, garbage truck services, reporting illegal buildings, repairing street lamps/traffic lights/parking meters, reporting noise and violations, and reporting broken sewers and road pipes.

4 1 1 is a local directory assistance station, which is equivalent to 1 14 in China.

5 1 1 is a tourist telephone number. You can call 5 1 1 to report traffic conditions, car accidents, construction and closed sections, highway traffic, and inquire about tourism-related information and weather conditions.

6 1 1 is a mobile phone service line. If you have questions about mobile phone packages, services, bills and operator charges, or want to inquire about the remaining and usage of this month's traffic, you can directly dial 6 1 1 to connect your telephone service provider's customer service center. 6 1 1 is also a toll-free phone.