COS’s default origin server domain is in the format of
&dxlt;BucketName-APPID>.cos.&dxlt;Region>.myqcloud.com. By default, public network and intra-region private network access are supported. You can use this domain to access COS over a private network (COS will be resolved to a private IP). In this case, traffic generated is private network traffic and will not incur traffic fees.