SHELL

regex for ips

# Match between 1 to 3 numbers separated by . in four groups
[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}

ip regex pattern

String pattern = "([01]?[0-9]{1,2}|2[0-4][0-9]|25[0-5])";

regular expressions for ip addresses

here there are some regular expressions that may help you recognise ip addresses:

binary format (separated by the '.'):
"([01]{8}.){3}[01]{8}"gsxi

decimal format (separated by the '.'):
"(([01][0-9][0-9]|2[0-4][0-9]|25[0-5]).){3}[01][0-9][0-9]|2[0-4][0-9]|25[0-5]"gsxi

ip regex

//Regex IPv4
^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$

//Regex IPv6  https://regex101.com/r/rB9pG1/1
^([[:xdigit:]]{1,4}(?::[[:xdigit:]]{1,4}){7}|::|:(?::[[:xdigit:]]{1,4}){1,6}|[[:xdigit:]]{1,4}:(?::[[:xdigit:]]{1,4}){1,5}|(?:[[:xdigit:]]{1,4}:){2}(?::[[:xdigit:]]{1,4}){1,4}|(?:[[:xdigit:]]{1,4}:){3}(?::[[:xdigit:]]{1,4}){1,3}|(?:[[:xdigit:]]{1,4}:){4}(?::[[:xdigit:]]{1,4}){1,2}|(?:[[:xdigit:]]{1,4}:){5}:[[:xdigit:]]{1,4}|(?:[[:xdigit:]]{1,4}:){1,6}:)$

ip address regex

^((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]?)$

regex ip address

^((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]?)$

ip address regex

rgx = re.compile(r"^((25[0-5]|(2[0-4]|1d|[1-9]|)d)(.(?!$)|$)){4}$")