When using the Sticky IP addresses you can get an exact UNIX timestamp as to when the exit node (IP address) will change.
Simply make an HTTP or SOCKS request to the URL refresh_timestamp and a UNIX timestamp will be returned.
This timestamp indicates when the new exit node (IP address) will be returned for this particular port.
$ curl -x private.residential.proxyrack.net:10000 -U USERNAME:PASSWORD refresh_timestamp -v * Rebuilt URL to: refresh_timestamp/ * Trying 18.104.22.168... * TCP_NODELAY set * Connected to 22.214.171.124 (126.96.36.199) port 1581 (#0) * Proxy auth using Basic with user 'USERNAME' > GET http://refresh_timestamp/ HTTP/1.1 > Host: refresh_timestamp > Proxy-Authorization: Basic > User-Agent: curl/7.54.0 > Accept: */* > Proxy-Connection: Keep-Alive > 1524477900667
We also support the new command api.refresh_seconds which will display in how many seconds your sticky port will rotate to a new IP address.
You may need to enter the HTTP protocol http://api.refresh_seconds when using your browser.