Last Updated: Monday, 26 May 2025 By: Steve Warner

Decimal IP Address:	2886209520	( http://2886209520 )
IP Address:	172.8.15.240/28	( 0xAC080FF0 )
Subnet Mask:	255.255.255.240	( 0xFFFFFFF0 )
Wildcard (Inverse) Mask:	0.0.0.15	( 0x0000000F )
Network Address:	172.8.15.240	( 0xAC080FF0 )
Broadcast Address:	172.8.15.255	( 0xAC080FFF )
Binary IP Address:	10101100.00001000.00001111.11110000
Binary Subnet Mask:	11111111.11111111.11111111.11110000
AND
Binary Network Address:	10101100.00001000.00001111.11110000
Binary Broadcast Address:	10101100.00001000.00001111.11111111
Class of Address:	B
Number of Subnets:	4096
Number of IP:	16
Number of Useable Hosts:	14
in-addr.arpa format:	240.15.8.172.in-addr.arpa
Hostname:	172-8-15-240.lightspeed.mmphtn.sbcglobal.net
GEOIP Location:	US - United States
NAT64 Address:	64:FF9B::AC08:0FF0
ISATAP Address:	FE80::0200:5EFE:AC08:0FF0
mapped IPV4:	::ffff:AC08:0FF0::/48
6to4:	2002:AC08:0FF0::/48

<Prev


Subnet  Network             First Usable IP     Last Usable IP      Broadcast
0       172.8.15.0          172.8.15.1          172.8.15.14         172.8.15.15         
1       172.8.15.16         172.8.15.17         172.8.15.30         172.8.15.31         
2       172.8.15.32         172.8.15.33         172.8.15.46         172.8.15.47         
3       172.8.15.48         172.8.15.49         172.8.15.62         172.8.15.63         
4       172.8.15.64         172.8.15.65         172.8.15.78         172.8.15.79         
5       172.8.15.80         172.8.15.81         172.8.15.94         172.8.15.95         
6       172.8.15.96         172.8.15.97         172.8.15.110        172.8.15.111        
7       172.8.15.112        172.8.15.113        172.8.15.126        172.8.15.127        
8       172.8.15.128        172.8.15.129        172.8.15.142        172.8.15.143        
9       172.8.15.144        172.8.15.145        172.8.15.158        172.8.15.159        
10      172.8.15.160        172.8.15.161        172.8.15.174        172.8.15.175        
11      172.8.15.176        172.8.15.177        172.8.15.190        172.8.15.191        
12      172.8.15.192        172.8.15.193        172.8.15.206        172.8.15.207        
13      172.8.15.208        172.8.15.209        172.8.15.222        172.8.15.223        
14      172.8.15.224        172.8.15.225        172.8.15.238        172.8.15.239        
15      172.8.15.240        172.8.15.241        172.8.15.254        172.8.15.255        


Next>


        CIDR Block          Network             Broadcast           Subnet Mask         No. IP's
        172.8.15.240/32     172.8.15.240     -  172.8.15.240        255.255.255.255     1              
        172.8.15.240/31     172.8.15.240     -  172.8.15.241        255.255.255.254     2              
        172.8.15.240/30     172.8.15.240     -  172.8.15.243        255.255.255.252     4              
        172.8.15.240/29     172.8.15.240     -  172.8.15.247        255.255.255.248     8              
        172.8.15.240/28     172.8.15.240     -  172.8.15.255        255.255.255.240     16             
        172.8.15.224/27     172.8.15.224     -  172.8.15.255        255.255.255.224     32             
        172.8.15.192/26     172.8.15.192     -  172.8.15.255        255.255.255.192     64             
        172.8.15.128/25     172.8.15.128     -  172.8.15.255        255.255.255.128     128            
        172.8.15.0/24       172.8.15.0       -  172.8.15.255        255.255.255.0       256            
        172.8.14.0/23       172.8.14.0       -  172.8.15.255        255.255.254.0       512            
        172.8.12.0/22       172.8.12.0       -  172.8.15.255        255.255.252.0       1024           
        172.8.8.0/21        172.8.8.0        -  172.8.15.255        255.255.248.0       2048           
        172.8.0.0/20        172.8.0.0        -  172.8.15.255        255.255.240.0       4096           
        172.8.0.0/19        172.8.0.0        -  172.8.31.255        255.255.224.0       8192           
        172.8.0.0/18        172.8.0.0        -  172.8.63.255        255.255.192.0       16384          
        172.8.0.0/17        172.8.0.0        -  172.8.127.255       255.255.128.0       32768          
        172.8.0.0/16        172.8.0.0        -  172.8.255.255       255.255.0.0         65536          
        172.8.0.0/15        172.8.0.0        -  172.9.255.255       255.254.0.0         131072         
        172.8.0.0/14        172.8.0.0        -  172.11.255.255      255.252.0.0         262144         
        172.8.0.0/13        172.8.0.0        -  172.15.255.255      255.248.0.0         524288         
        172.0.0.0/12        172.0.0.0        -  172.15.255.255      255.240.0.0         1048576        
        172.0.0.0/11        172.0.0.0        -  172.31.255.255      255.224.0.0         2097152        
        172.0.0.0/10        172.0.0.0        -  172.63.255.255      255.192.0.0         4194304        
        172.0.0.0/9         172.0.0.0        -  172.127.255.255     255.128.0.0         8388608        
        172.0.0.0/8         172.0.0.0        -  172.255.255.255     255.0.0.0           16777216       
        172.0.0.0/7         172.0.0.0        -  173.255.255.255     254.0.0.0           33554432       
        172.0.0.0/6         172.0.0.0        -  175.255.255.255     252.0.0.0           67108864       
        168.0.0.0/5         168.0.0.0        -  175.255.255.255     248.0.0.0           134217728      
        160.0.0.0/4         160.0.0.0        -  175.255.255.255     240.0.0.0           268435456      
        160.0.0.0/3         160.0.0.0        -  191.255.255.255     224.0.0.0           536870912      
        128.0.0.0/2         128.0.0.0        -  191.255.255.255     192.0.0.0           1073741824     
        128.0.0.0/1         128.0.0.0        -  255.255.255.255     128.0.0.0           2147483648