Subnet Mask Lengths / Quick Reference

Subnet Mask Lengths / Quick Reference

This is for when you say how many IPs would be in a /20 or /24
Now instead of doing math just remember this table or visit here more often :)

/32 1 IP Address(es)  
/31 2 IP Address(es)  
/30 4 IP Address(es)  
/29 8 IP Address(es)  
/28 16 IP Address(es)  
/27 32 IP Address(es)  
/26 64 IP Address(es)  
/25 128 IP Address(es)  
/24 256 IP Address(es)  
/23 512 IP Address(es)  
/22 1024 IP Address(es)  
/21 2048 IP Address(es)  
/20 4096 IP Address(es)  
/19 8192 IP Address(es)  
/18 16384 IP Address(es)  
/17 32768 IP Address(es)  
/16 65536 IP Address(es)  
/15 131072 IP Address(es)  
/14 262144 IP Address(es)  
/13 524288 IP Address(es)  
/12 1048576 IP Address(es)  
/11 2097152 IP Address(es)  
/10 4194304 IP Address(es)  
 /9 8388608 IP Address(es)  
 /8 16777216 IP Address(es)  



subnet, lengths, referencesubnet, reference, ips, ip, es,

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