I have got different IP addresses (of /29 networks) which are mentioned below. I have to add them in OSPF... one way is to add all the networks one by one ... however to avoid lengthy commands,i would prefer to 'summarise' the networks (by working on its wild-card mask).
What do you suggest? What could be the shortest possible wild-card mask?
The subnets for the addresses you mention can be summarised into 100.100.52.0/26 (note that this includes 100.100.52.0/29 which you have not said that you are using).
The subnet mask is 255.255.255.192 which gives a wildcard mask of 0.0.0.63.