gIP

Just a very simple but useful subnetting helper for IPs.

Examples

Input: 192.0.2.0/24

[IPv4 Network] Private address
IP address      - 192.0.2.0
Network address - 192.0.2.0/24

Subnet mask     - 255.255.255.0
Wildcard mask   - 0.0.0.255

Network range   - 192.0.2.0
                - 192.0.2.255

Usable range    - 192.0.2.1
                - 192.0.2.254

Input: 2001:db8::abcd:1234

[IPv6 Network] Private address
IP address      - 2001:db8::abcd:1234
Network address - 2001:db8::/64

Network range   - 2001:0db8:0000:0000:0000:0000:0000:0000
                - 2001:0db8:0000:0000:ffff:ffff:ffff:ffff

Usable range    - 2001:0db8:0000:0000:0000:0000:0000:0001
                - 2001:0db8:0000:0000:ffff:ffff:ffff:fffe

Other alternate supported inputs:

• 192.0.2.0 (works like a /32)
• 192.0.2.0 255.255.255.0
• 192.0.2.0/255.255.255.0
• 2001:db8:: (works like a /128)
• 2001:db8::/64
• -l 192.0.2.0/28 (just lists all the IPs in the subnet (handy for loops))

Exit codes

• 0: Clean exit
• 1: Cannot parse IP
• 2: List called with more than 2^8 IPs and not --force
• 3: Called with -h (help)

Tests

Run using python3 -m pytest