Error code

1.Residential Proxy

HTTP Status Code	Reason Phrase	illustrate
`407`	Proxy Authentication Failed/White IP Failed	Username, password or whitelist error
`413`	Illegal Request	Request format error
`415`	Request Over Limit	Concurrency exceeded
`416`	Bandwidth Over Limit	Bandwidth exceeded
`418`	Miss Host	Unable to resolve destination host address
`419`	Mainland China Access Not Permitted	Mainland China client banned
`421`	DNS Resolution Failed	DNS resolution failed
`423`	Public Host Required	Target host address non-public network ip
`429`	Insufficient Traffic	Insufficient order flow
`431`	Unauthorized IP Usage	Use unauthorized ip
`503`	Proxy Connect Error	Failed to connect to target host

HTTP Status Code	Reason Phrase	illustrate
`407`	Proxy Authentication Failed/White IP Failed	Username, password or whitelist error
`413`	Illegal Request	Request format error
`415`	Request Over Limit	Concurrency exceeded
`416`	Bandwidth Over Limit	Bandwidth exceeded
`418`	Miss Host	Unable to resolve destination host address
`419`	Mainland China Access Not Permitted	Mainland China client banned
`421`	DNS Resolution Failed	DNS resolution failed
`423`	Public Host Required	Target host address non-public network ip
`431`	Unauthorized IP Usage	Use unauthorized ip
`503`	Proxy Connect Error	Failed to connect to target host