Former Australian prime minister Kevin Rudd's website has been unblocked by federal parliament's internal internet filter after it was mistakenly given the classification of "weapons".

First spotted on Monday by Maiy Azize, an advisor for the Australian Greens, kevinrudd.com was blocked on parliament's network for all staff, displaying the message "access to this webpage is restricted at this time".

Former prime minister Kevin Rudd's website was blocked within parliament. Credit:Andrew Meares

".@MrKRudd Fair shake of the sauce bottle! Your website has been blocked by parliament," Azize said in a tweet.

Fairfax Media asked parliament's Department of Parliamentary Services, which manages the computer network, why Mr Rudd's website was blocked.