Regular Expressions 101

Pro

^start of line

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)

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)

Global pattern flags

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

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

^[0-9]{1,3}.[0-9]{1,3}

New

103.145.72.0/24  Alibaba.com HK(Kaopuyun)   256
110.76.21.0/24   Zhejiang Ant Small And Micro Financial Services    256
122.254.76.0/23  Internet Global (group) Co., LTD   512
116.251.120.0/22     Zhejiang Taobao Network Co.,Ltd    1,024
149.129.16.0/23  Alibaba.com Singapore E-Commerce Private Limited   512
8.209.96.0/19    Westendstrabe 28, 60325 Frankfurt am Main  8,192