Is there a utility to check the valid of .htaccess?

Is there a utility to check the valid of .htaccess?

could you tell me what different there are in the three methods below?

1:
order allow,deny
allow from all
deny from 58.30.0.
deny from 59.64.
deny from 59.66.

2:
<Limit GET>
order allow,deny
deny from 210.25.
deny from 210.26.
allow from all
</Limit>

3:
<Files 403.shtml>
order allow,denyallow from all
</Files>
deny from 221.232.23.24
deny from 221.232.23.25

 

 

 

 

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