oyster farm
Download Pearl

IP Address, Alan Sure

Matches IPv4 addresses. It's relatively lax but is more than enough for the majoirty of use-cases.

(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)