| Title | 
                
                    Test
                    Find
                    
                    Class A Network Number
                 | 
            
            
                | Expression | 
                ^(10\.[0-9]|[1-9][0-9]|[1-2][0-5][0-5]\.[0-9]|[1-9][0-9]|[1-2][0-5][0-5]\.[0-9]|[1-9][0-9]|[1-2][0-5][0-5])$  | 
            
            
                | Description | 
                The IANA resrved 24-bit block of IP address space for private internets. It's just a single class A network number. This is also RFC 1918 compliant.  | 
            
            
                | Matches | 
                10.0.0.0 | 10.255.255.255  | 
            
            
                | Non-Matches | 
                17.16.0.0 | 192.168.255.255  | 
            
            
                | Author | 
                
                    Rating:
                        
Not yet rated.
                    tedcambron
                 | 
            
            
                | Source | 
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              | Your Rating | 
              
                
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	                Title: Need to group octets
	                Name: xninjax
	                Date: 10/18/2020 5:06:16 PM
	                Comment: 
I needed to group each octet using brackets for this to evaluate - otherwise was a good base to work from. Thanks!
^(10\.([0-9]|[1-9][0-9]|[1-2][0-5][0-5])\.([0-9]|[1-9][0-9]|[1-2][0-5][0-5])\.([0-9]|[1-9][0-9]|[1-2][0-5][0-5]))$
                
                
            
                
	                Title: Malfunction
	                Name: [email protected]
	                Date: 4/17/2008 9:49:28 AM
	                Comment: 
Installed are Win XP SP2 VB 6.0 SP 5 and Microsofts VBScript Regular Expression 5.5.
Each internal address (eg. 192.168.111.19) does not match.
I testet the following pattern and it goes:
\b192\.168\.([0-9]|[1-9][0-9]|[1-9][0-9][0-9])\.([0-9]|[1-9][0-9]|[1-9][0-9][0-9])\b