How can I learn whether my ip address has restricted or not?
The access of IPs may be resitricted beacuse of the SPAM, Viruses, unauthorized usage, P2P Sharing, and breach of license for a limited time or indefinite by the METU-CC. You can check the status of your IP by the link below:
https://netregister.metu.edu.tr -> Restriction Menu
The users has the restricted IPs, after solving the problem caused to the restriction may login https://netregister.metu.edu.tr with their METU username and password and remove the restriction.