Change Web Service URL .net

you should not be worried about them changing there webservice IP unless you use there public IP to access the service which is not right.

any exposed webservice should have one URL and never use an IP to reference the webservice.

you should use a domain URL to access their web service not the IP.

and why they change the IP every day ?

or you have a list of IPs 

Thank you for your time answering my question

I am using a external IP to call the web service, because, i cannot access to the server name because is not populated in the network

The issue is, that i need to change every day the URL automatically using the K2 API, and i dont know how can i do it.

Thank you very much

Juan Antonio