由于没有概念，在了解400电话怎么申请时，很多企业并不会关注到不良号码。需要提醒大家的是有些代理商提供的400号码之所以便宜，有可能是因为这批号码之前有诈骗或是违规的不良记录，号码由之前的企业低价甩卖导致。如果一家正规企业选择了这批不良的号码，除了影响公司信誉之外，还面临随时被运营商封号的风险。而被封号码中所充的预存话费，运营商是不会返还的。
Because there is no concept, many enterprises do not pay attention to bad numbers when they understand how to apply for 400 phone. We need to remind you that the reason why the 400 numbers provided by some agents are cheap may be that these numbers have a bad record of fraud or violation before. The numbers are caused by the low-cost sales of previous enterprises. If a regular enterprise chooses these bad numbers, it will not only affect the reputation of the company, but also face the risk of being blocked by the operator at any time. The operator will not return the pre stored call fee charged in the sealed number.