tracert DNSBL ipcalc SPF punycode check  

 Examples: 192.168.2.1/24 or 10.10.10.0/255.255.254.0

IP/mask:
192.168.10.10/24BINDEC
ip adress192.168.10.10110000001010100000001010000010103232238090
mask255.255.255.0 = 24111111111111111111111111000000004294967040
mask inversion (wildcard)0.0.0.25500000000000000000000000011111111255
network192.168.10.0/24110000001010100000001010000000003232238080
first ip adress192.168.10.1110000001010100000001010000000013232238081
last ip adress192.168.10.254110000001010100000001010111111103232238334
broadcast192.168.10.255110000001010100000001010111111113232238335
count hosts25400000000000000000000000011111110 

<-----end