Subnetting practice generator

If you are like me and feel like you maybe have memorized everything that subnettingquestions.com can throw at you...

This is probably well known but I just now found it... great site for practice as it throws you many many more Class A's than subnettingquestions.com does. I haven't clicked on the advanced subnetting button yet... but its nice to see things other than subnetting the private addresses

http://www.kehlet.cx/docs/2004/03/subnet.php

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Comments

Essendon

That's a great find, Dale. The only down-side is it's the same type of queestion each time, if he had added finding subnets, number of subnets and IP's, this would have been fantastic. But still, very good.

dazerski

Yeah... thats true. And I was practicing more with this site and I received a question that was like...

0.92.119.20
192.0.0.0

Network: ?
Broadcast: ?

is that even valid?

Essendon

Perhaps this isnt used, but I'd say it's possible. Address class A is 0 - 127 so yeah possible, but certainly a weird IP address.

Network address : 0.0.0.0
Broadcast : 63.255.255.255

I'll probably leave it the experts to say whether this can be used in production as the network address is 0.0.0.0

networker050184

0 and 127 are reserved addresses for special use.

RFC 3330