서브넷 마스크 테이블, Subnet Mask Table
CIDRSubnet MaskUsableIP Address
/24255.255.255.0254개
192.168.0.0/24
/25255.255.255.128126개
192.168.0.0/25
192.168.0.128/25
/26255.255.255.19262개
192.168.0.0/26
192.168.0.64/26
192.168.0.128/26
192.168.0.192/26
/27255.255.255.22430개
192.168.0.0/27
192.168.0.32/27
192.168.0.64/27
192.168.0.96/27
192.168.0.128/27
192.168.0.160/27
192.168.0.192/27
192.168.0.224/27
/28255.255.255.24014개
192.168.0.0/28
192.168.0.16/28
192.168.0.32/28
192.168.0.48/28
192.168.0.64/28
192.168.0.80/28
192.168.0.96/28
192.168.0.112/28
192.168.0.128/28
192.168.0.144/28
192.168.0.160/28
192.168.0.176/28
192.168.0.192/28
192.168.0.208/28
192.168.0.224/28
192.168.0.240/28
/29255.255.255.2486개
192.168.0.0/29
192.168.0.8/29
192.168.0.16/29
192.168.0.24/29
192.168.0.32/29
192.168.0.40/29
192.168.0.48/29
192.168.0.56/29
192.168.0.64/29
192.168.0.72/29
192.168.0.80/29
192.168.0.88/29
192.168.0.96/29
192.168.0.104/29
192.168.0.112/29
192.168.0.120/29
192.168.0.128/29
192.168.0.136/29
192.168.0.144/29
192.168.0.152/29
192.168.0.160/29
192.168.0.168/29
192.168.0.176/29
192.168.0.184/29
192.168.0.192/29
192.168.0.200/29
192.168.0.208/29
192.168.0.216/29
192.168.0.224/29
192.168.0.232/29
192.168.0.240/29
192.168.0.248/29
/30255.255.255.2522개
192.168.0.0/30
192.168.0.4/30
192.168.0.8/30
192.168.0.12/30
192.168.0.16/30
192.168.0.20/30
192.168.0.24/30
192.168.0.28/30
192.168.0.32/30
192.168.0.36/30
192.168.0.40/30
192.168.0.44/30
192.168.0.48/30
192.168.0.52/30
192.168.0.56/30
192.168.0.60/30
192.168.0.64/30
192.168.0.68/30
192.168.0.72/30
192.168.0.76/30
192.168.0.80/30
192.168.0.84/30
192.168.0.88/30
192.168.0.92/30
192.168.0.96/30
192.168.0.100/30
192.168.0.104/30
192.168.0.108/30
192.168.0.112/30
192.168.0.116/30
192.168.0.120/30
192.168.0.124/30
192.168.0.128/30
192.168.0.132/30
192.168.0.136/30
192.168.0.140/30
192.168.0.144/30
192.168.0.148/30
192.168.0.152/30
192.168.0.156/30
192.168.0.160/30
192.168.0.164/30
192.168.0.168/30
192.168.0.172/30
192.168.0.176/30
192.168.0.180/30
192.168.0.184/30
192.168.0.188/30
192.168.0.192/30
192.168.0.196/30
192.168.0.200/30
192.168.0.204/30
192.168.0.208/30
192.168.0.212/30
192.168.0.216/30
192.168.0.220/30
192.168.0.224/30
192.168.0.228/30
192.168.0.232/30
192.168.0.236/30
192.168.0.240/30
192.168.0.244/30
192.168.0.248/30
192.168.0.252/30
  Private IPv4 Address
10.0.0.0/8
172.16.0.0/12
192.168.0.0/16
  CIDR 표기법
/1128.0.0.0128 A
/2192.0.0.064 A
/3224.0.0.032 A
/4240.0.0.016 A
/5248.0.0.08 A
/6252.0.0.04 A
/7254.0.0.02 A
/8255.0.0.01 A
/9255.128.0.0128 B
/10255.192.0.064 B
/11255.224.0.032 B
/12255.240.0.016 B
/13255.248.0.08 B
/14255.252.0.04 B
/15255.254.0.02 B
/16255.255.0.01 B
/17255.255.128.0128 C
/18255.255.192.064 C
/19255.255.224.032 C
/20255.255.240.016 C
/21255.255.248.08 C
/22255.255.252.04 C
/23255.255.254.02 C
/24255.255.255.01 C
/25255.255.255.1281/2 C
/26255.255.255.1921/4 C
/27255.255.255.2241/8 C
/28255.255.255.2401/16 C
/29255.255.255.2481/32 C
/30255.255.255.2521/64 C
/31255.255.255.2541/128 C
/32255.255.255.2551
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