Regular Expressions 101

^start of line

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 1([\w-]+\.[\w-]+\.[\w-]+)

Character Class[\w-]+

+matches at least one character from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\w-]+

+matches at least one character from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\w-]+

+matches at least one character from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

$end of line

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

^.*?\.([\w-]+\.[\w-]+\.[\w-]+)$

New

web1.com
test.web2.com
www.test.web3.com
baz.f-o-o.b-ar.com

a.b.c.d
a.b.c.d.e
a.b.c.d.e.f

web1.com
test.web2.com
www.test.web3.com
baz.f-o-o.b-ar.com

a.b.c.d
a.b.c.d.e
a.b.c.d.e.f