Regular Expressions 101

Group 1((?:[0-9]{1,3}\.){3}[0-9]{1,3})

Non-Capturing Group(?:[0-9]{1,3}\.){3}

{3}repeats the group contents below exactly 3 times:

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

.*any character (except for line terminators), repeated any number of times

Group 2(([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2}))

Group 3([0-9A-Fa-f]{2}[:-]){5}

{5}repeats the group contents below exactly 5 times:

Character Class[0-9A-Fa-f]{2}

{2}matches exactly 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

A-Fone character from A (65₁₀) to F (70₁₀) (case sensitive)

a-fone character from a (97₁₀) to f (102₁₀) (case sensitive)

Character Class[:-]

:the literal : (58₁₀ / 72₈ / 3A₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 4([0-9A-Fa-f]{2})

Character Class[0-9A-Fa-f]{2}

{2}matches exactly 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

A-Fone character from A (65₁₀) to F (70₁₀) (case sensitive)

a-fone character from a (97₁₀) to f (102₁₀) (case sensitive)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

((?:[0-9]{1,3}\.){3}[0-9]{1,3}).*(([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2}))

New


IP address        HW type   Flags   HW address          Mask              Device      Ethernet interface   VLAN ID
10.26.64.1        0x1       0x2     e0:97:96:bd:e6:48   *                 veip0.2
1.1.1.2           0x1       0x2     00:26:86:00:00:00   *                 br0
192.168.1.3       0x1       0x2     b8:27:eb:48:3d:e6   *                 br0         LAN3                 0

IPv6 Neighbor Table:
IPv6 address                              HW Address          Device
fe80::9a97:d1ff:fe70:eeb6                 98:97:d1:70:ee:b6   br0

Regular Expression

Extraction