first octet 30 (Class A )
subnet mask is /24 (Class C)
so is this a class A address or class C address?
or subnetted class A address?
thank you in advance for all responses
Generally, the IP address that you provided is a Class A network. What we are dealing here is Variable Length Subnet Masks (VLSM). Giving a subnet that is different than the usual to be able to come of with a larger number of networks that supports a smaller number of hosts (long masks) or vise versa. VLSM was created to find ways to use address space more efficiently. VLSM runs on Cisco routers with IOS that supports it. Several routing protocols such as RIPv2, EIGRP and OSPF also supports VLSM.
So you're right, this is a subnetted Class A network.
Please see link below for additional reference:
Hope this helps,