### IPv4 network addresses, masks, notations, etc. ###
* Masks of most used address plans:
------------------------------------------------------------
| Mask | CIDR notation | Available addresses |
|--------------------+---------------+---------------------|
| 255.0.0.0 | /8 | 16777214 |
| 255.255.0.0 | /16 | 65534 |
| 255.255.255.0 | /24 | 254 |
| 255.255.255.128 | /25 | 126 |
| 255.255.255.192 | /26 | 62 |
| 255.255.255.224 | /27 | 30 |
| 255.255.255.240 | /28 | 14 |
| 255.255.255.248 | /29 | 6 |
| 255.255.255.252 | /30 | 2 |
| 255.255.255.254 | /31 | 2 |
| 255.255.255.252 | /32 | 1 |
------------------------------------------------------------
* Some addresses are reserved for specific use (RFC 3330):
Private networks (RFC 1918):
For class A: 10.0.0.0/8 (10.0.0.0 - 10.255.255.255)
For class B: 172.16.0.0/12 (172.16.0.0 - 172.31.255.255)
For class C: 192.168.0.0/16 (192.168.0.0 - 192.168.255.255)
Localhost addresses: 127.0.0.0/8 (127.0.0.0 - 127.255.255.255)
Multicast (class D): 224.0.0.0/4 (224.0.0.0 - 239.255.255.255)
APIPA addresses (RFC 3927): 169.254.0.0/16 (169.254.0.0 - 169.254.255.255)