Regular Expressions 101

Explanation

Pro

Negative Lookbehind(?<!subdomain\.)

subdomainthe literal text subdomain (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

examplethe literal text example (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (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.

25 tokens

(?<!subdomain\.)example\.com

New

Here is subdomain.example.com but it doesn't match.
Here is example.com which does.

Here is subdomain.example.com but it doesn't match.
Here is example.com which does.