Regular Expressions 101

^start of line

Group 1(255)

255the literal text 255

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 2(0|128|192|224|240|248|252|254|255)

1st Alternative0

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

2nd Alternative128

128the literal text 128

3rd Alternative192

192the literal text 192

4th Alternative224

224the literal text 224

5th Alternative240

240the literal text 240

6th Alternative248

248the literal text 248

7th Alternative252

252the literal text 252

8th Alternative254

254the literal text 254

9th Alternative255

255the literal text 255

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 3(0|128|192|224|240|248|252|254|255)

1st Alternative0

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

2nd Alternative128

128the literal text 128

3rd Alternative192

192the literal text 192

4th Alternative224

224the literal text 224

5th Alternative240

240the literal text 240

6th Alternative248

248the literal text 248

7th Alternative252

252the literal text 252

8th Alternative254

254the literal text 254

9th Alternative255

255the literal text 255

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 4(0|128|192|224|240|248|252|254|255)

1st Alternative0

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

2nd Alternative128

128the literal text 128

3rd Alternative192

192the literal text 192

4th Alternative224

5th Alternative240

6th Alternative248

7th Alternative252

8th Alternative254

9th Alternative255

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.

Search reference

Regular Expression

^(255)\.(0|128|192|224|240|248|252|254|255)\.(0|128|192|224|240|248|252|254|255)\.(0|128|192|224|240|248|252|254|255)

New

255.0.0.0	
255.128.0.0	
255.192.0.0	
255.224.0.0	
255.240.0.0	
255.248.0.0	
255.252.0.0
255.254.0.0
255.255.0.0
255.255.128.0
255.255.192.0
255.255.224.0
255.255.240.0
255.255.248.0
255.255.252.0	
255.255.254.0	
255.255.255.0	
255.255.255.128
255.255.255.192	
255.255.255.224	
255.255.255.240	
255.255.255.248	
255.255.255.252

Regular Expression

Substitution