url2it

Make a small URL for your BIG link - It's free, of course

Tools

• Root DNS Tree-walk
• Request & Response Headers
• Redirect Revealer
• URL Decoder
• IP Mask, Network & Broadcast Calculator
• DNS Report

Subnet-Mask Calculator
Enter the IP Network Address:
Force as Class:	Default Class A Class B Class C
Enter the required number of sub-nets:	1 2 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152 4194304 8388608
OR enter the required number of hosts per network (including network & bcast addresses):	2 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152 4194304 8388608 16777216 33554432 67108864 134217728 268435456 536870912 1073741824 2147483648
Network Class:
Subnet-mask:	or
Subnets:
Hosts per Network (including network and bcast addresses):
Network/Node Calculator
Enter the Subnet-Mask:
Enter the IP Address:
Network:
Host:
Broadcast Address:
IP Address Converter
Enter the dotted decimal IP Address:
or Enter the binary IP Address:
or Enter the hex IP Address:
or Enter the decimal IP Address:
Subnet-mask Converter
Enter the dotted decimal Subnet-mask
or Enter the number of bits in the subnet-mask	/
Subnet-mask Inverter
Enter the dotted decimal Subnet-mask
Enter inverted Subnet-mask