400电话号码使用范围包括以下几点：

400 the use range of the telephone number includes the following points:

1）加盟企业或连锁企业；

1) join enterprises or chain enterprises;

2）企事业单位，更好的搭建政府部门与广大民众之间良好的信息桥梁；

2) enterprises and institutions, better to build a good bridge of information between the government departments and the masses of the masses;

3）企业的信息增值业务量大，如互联网公司企业，需要建立系统的信息台等公司；

3) the enterprise has a large amount of information value-added services, such as the Internet Co enterprises, which need to establish a system of information stations and other companies.

4）企业的业务需求为各地，包括工业制造行业、旅游服务行业、物流行业、IT电子信息行业、医疗销售、影视传媒行业等，都可以用400电话包装企业；

4) business needs for all parts, including industrial manufacturing industry, tourism service industry, logistics industry, IT electronic information industry, medical sales, film and television media industry, etc., can be used in 400 phone packaging enterprises.

5）根据企业业务需求需建立企业7*24小时客服热线，如证券公司、基金股票公司等单位；

5) according to the business needs, we should set up an enterprise 7*24 hour customer service hotline, such as securities companies, fund stock companies and other units.

6）由于各种原因未能在信息技术部申请业务员专用短号码的，但又必不可少一个系统的客服中心接入码的企业；

6) for a variety of reasons, it is not possible to apply for a short number for the service clerk in the information technology department, but it is necessary for a system to access the code of the customer service center.