regex101: Country Code

Pro

1st AlternativeCA_[A-Z][0-9][A-Z]\h?[0-9][A-Z][0-9]

CA_the literal text CA_ (case sensitive)

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[0-9]

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

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

\h?optionally matches any horizontal whitespace character

Character Class[0-9]

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

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[0-9]

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

2nd AlternativeUS_[0-9]{5}

US_the literal text US_ (case sensitive)

Character Class[0-9]{5}

{5}matches exactly 5 characters from the set below:

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

3rd AlternativeGB_(?:(?:[A-Z][0-9]|[A-Z][0-9]{2}|[A-Z]{2}[0-9]|[A-Z]{2}[0-9]{2}|[A-Z][0-9][A-Z]|[A-Z]{2}[0-9][A-Z])\h?[0-9][A-Z]{2}|GIR\h?0AA)

GB_the literal text GB_ (case sensitive)

Non-Capturing Group(?:(?:[A-Z][0-9]|[A-Z][0-9]{2}|[A-Z]{2}[0-9]|[A-Z]{2}[0-9]{2}|[A-Z][0-9][A-Z]|[A-Z]{2}[0-9][A-Z])\h?[0-9][A-Z]{2}|GIR\h?0AA)

1st Alternative(?:[A-Z][0-9]|[A-Z][0-9]{2}|[A-Z]{2}[0-9]|[A-Z]{2}[0-9]{2}|[A-Z][0-9][A-Z]|[A-Z]{2}[0-9][A-Z])\h?[0-9][A-Z]{2}

Non-Capturing Group(?:[A-Z][0-9]|[A-Z][0-9]{2}|[A-Z]{2}[0-9]|[A-Z]{2}[0-9]{2}|[A-Z][0-9][A-Z]|[A-Z]{2}[0-9][A-Z])

1st Alternative[A-Z][0-9]

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[0-9]

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

2nd Alternative[A-Z][0-9]{2}

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[0-9]{2}

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

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

3rd Alternative[A-Z]{2}[0-9]

Character Class[A-Z]{2}

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

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[0-9]

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

4th Alternative[A-Z]{2}[0-9]{2}

Character Class[A-Z]{2}

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

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[0-9]{2}

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

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

5th Alternative[A-Z][0-9][A-Z]

6th Alternative[A-Z]{2}[0-9][A-Z]

\h?optionally matches any horizontal whitespace character

Character Class[0-9]

Character Class[A-Z]{2}

2nd AlternativeGIR\h?0AA

25 tokens

Regular Expression

CA_[A-Z][0-9][A-Z]\h?[0-9][A-Z][0-9]|US_[0-9]{5}|GB_(?:(?:[A-Z][0-9]|[A-Z][0-9]{2}|[A-Z]{2}[0-9]|[A-Z]{2}[0-9]{2}|[A-Z][0-9][A-Z]|[A-Z]{2}[0-9][A-Z])\h?[0-9][A-Z]{2}|GIR\h?0AA)

Unit Tests

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