regex101: Golang Match Workspace

Pro

1st Alternative0\s*800\d{3}\s*\d{4}

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

\s*any whitespace character, repeated any number of times

800the literal text 800

\d{3}a digit, repeated exactly 3 times

\s*any whitespace character, repeated any number of times

\d{4}a digit, repeated exactly 4 times

2nd Alternative(?:300[34]|400[34]|4020)[\s\.-]?\d{4}

Non-Capturing Group(?:300[34]|400[34]|4020)

1st Alternative300[34]

300the literal text 300

Character Class[34]

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

2nd Alternative400[34]

400the literal text 400

Character Class[34]

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

3rd Alternative4020

4020the literal text 4020

Character Class[\s\.-]?

?matches at most one character from the set below:

\sany whitespace character

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{4}a digit, repeated exactly 4 times

3rd Alternative\(?(?:[14689]\d|2[^356\D]|3[^69\D]|5[^267-9\D]|7[^268\D])\)?\s*\d{4}[\s\.-]?\d{4}

\(?optionally matches the literal ( (40₁₀ / 50₈ / 28₁₆)

Non-Capturing Group(?:[14689]\d|2[^356\D]|3[^69\D]|5[^267-9\D]|7[^268\D])

1st Alternative[14689]\d

Character Class[14689]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

9the literal 9 (57₁₀ / 71₈ / 39₁₆)

\da digit

2nd Alternative2[^356\D]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Negated Character Class[^356\D]

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

\Dany character that's not a digit

3rd Alternative3[^69\D]

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

Negated Character Class[^69\D]

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

9the literal 9 (57₁₀ / 71₈ / 39₁₆)

\Dany character that's not a digit

4th Alternative5[^267-9\D]

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

Negated Character Class[^267-9\D]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

7-9one character from 7 (55₁₀) to 9 (57₁₀)

\Dany character that's not a digit

5th Alternative7[^268\D]

7the literal 7 (55₁₀ / 67₈ / 37₁₆)

Negated Character Class[^268\D]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

\Dany character that's not a digit

\)?optionally matches the literal ) (41₁₀ / 51₈ / 29₁₆)

\s*any whitespace character, repeated any number of times

\d{4}a digit, repeated exactly 4 times

Character Class[\s\.-]?

?matches at most one character from the set below:

\sany whitespace character

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{4}a digit, repeated exactly 4 times

Global pattern flags

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

25 tokens

Regular Expression

0\s*800\d{3}\s*\d{4}|(?:300[34]|400[34]|4020)[\s\.-]?\d{4}|\(?(?:[14689]\d|2[^356\D]|3[^69\D]|5[^267-9\D]|7[^268\D])\)?\s*\d{4}[\s\.-]?\d{4}

New

<a href="tel:1123456789" class="btn-tel">(11) 2345-6789</a>
<strong>3003-1234</strong>
<b>3698765432</b><i>3798765432</i>
(22)66669696
<a _ngcontent-iqq-c82="" href="tel:30031234" class="ng-tns-c82-0">3003-1025 </a>
<sometag>08001234567</sometag>

Extraction

<a href="tel:1123456789" class="btn-tel">(11) 2345-6789</a>
<strong>3003-1234</strong>
<b>3698765432</b><i>3798765432</i>
(22)66669696
<a _ngcontent-iqq-c82="" href="tel:30031234" class="ng-tns-c82-0">3003-1025 </a>
<sometag>08001234567</sometag>