Query result status code

Each time a query succeeds or fails, a code object is returned.

Code	Description
200	Query successful
400	Error in querying IP address
401	Access key error
402	Your package has been used up. Please settle the excess charges or renew your subscription.
408	Network delay, request processing time is too long
500	An unknown internal error occurred.
501	The access IP address is not included in the whitelist.