real life subnet question

ja5983

IP 41.142.215.131
subnet 255.255.255.248
that = 41.142.215.130/30 since 70 is class A...
so that should be 2 hosts and 2 subnets right?
so how is it possible for the subnet range to be
41.142.215.130-37?

(these arent actually the IPs i changed them a little...but the class is the same and it seemed odd to me...)

dmaftei

ja5983 wrote:

IP 41.142.215.131
subnet 255.255.255.248

You're subnetting a class A network by borrowing 8 + 8 + 5 = 21 bits from the host part. That gives you 2^21 = 2097152 subnets (including all-zeros and all-ones), with 2^3 = 8 IP addresses per subnet, hence the 130-137 range.