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My ISP is about to close down. I want to keep the IP addresses they issued to me. Am I allowed to do that?

If the IP addresses you received from your ISP have a status of "ASSIGNED PI" they are Provider Independent. That means you can take them with you when you change ISP. If your IP addresses have a status of "ASSIGNED PA" they are Provider Aggregatable; that means you will not be able to take them with you. You will have to renumber.

The status of the addresses is visible in the inetnum object in the RIPE Whois Database. You can query the Database on our web site at:

http://www.db.ripe.net/whois

You can read more about PA and PI address space in the RIPE document "Provider Independent versus Provider Aggregatable Address Space" which is available from the RIPE Document Store.