Regular Expressions 101

1st Alternative^(?:go|h[1,3]\-redir02\-v)\.eset\.com

^start of line

Non-Capturing Group(?:go|h[1,3]\-redir02\-v)

1st Alternativego

gothe literal text go (case insensitive)

2nd Alternativeh[1,3]\-redir02\-v

hthe literal h (104₁₀ / 150₈ / 68₁₆) (case insensitive)

Character Class[1,3]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

redir02the literal text redir02 (case insensitive)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

vthe literal v (118₁₀ / 166₈ / 76₁₆) (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

esetthe literal text eset (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (case insensitive)

2nd Alternative(?:support\-)?go\.eset\.eu$

Non-Capturing Group(?:support\-)?

?repeats the group contents below at most once:

supportthe literal text support (case insensitive)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

gothe literal text go (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

esetthe literal text eset (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

euthe literal text eu (case insensitive)

$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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^(?:go|h[1,3]\-redir02\-v)\.eset\.com|(?:support\-)?go\.eset\.eu$

go.eset.com
h1-redir02-v.eset.com
h3-redir02-v.eset.com
go.eset.eu
support-go.eset.eu