Find IP IPv4 Network/Subnet and its host address ranges

What is an IPv4 IP address its network and host address ranges?

An IPv4 IP address is an address used in order to uniquely identify a device on an IP network. The address is made up of 32 binary bits, which can be divisible into a network portion and host portion with the help of a subnet mask. The 32 binary bits are broken into four octets (1 octet = 8 bits). Each octet is converted to decimal and separated by a period (dot).

How to Subnet IPv4? Its simple answer is that subnetting is the process of taking a network and splitting it into smaller networks, known as subnets. It's used to free up more public IPv4 addresses and segment networks for security and easier management.
Following are the ranges of IPv4 subnet/network address and their host addresses.

IPv4 AddressIPv6 Address
199.138.191.1 0:0:0:0:0:ffff:c78a:bf01
199.138.191.2 0:0:0:0:0:ffff:c78a:bf02
199.138.191.3 0:0:0:0:0:ffff:c78a:bf03
199.138.191.4 0:0:0:0:0:ffff:c78a:bf04
199.138.191.5 0:0:0:0:0:ffff:c78a:bf05
199.138.191.6 0:0:0:0:0:ffff:c78a:bf06
199.138.191.7 0:0:0:0:0:ffff:c78a:bf07
199.138.191.8 0:0:0:0:0:ffff:c78a:bf08
199.138.191.9 0:0:0:0:0:ffff:c78a:bf09
199.138.191.10 0:0:0:0:0:ffff:c78a:bf0a
199.138.191.11 0:0:0:0:0:ffff:c78a:bf0b
199.138.191.12 0:0:0:0:0:ffff:c78a:bf0c
199.138.191.13 0:0:0:0:0:ffff:c78a:bf0d
199.138.191.14 0:0:0:0:0:ffff:c78a:bf0e
199.138.191.15 0:0:0:0:0:ffff:c78a:bf0f
199.138.191.16 0:0:0:0:0:ffff:c78a:bf10
199.138.191.17 0:0:0:0:0:ffff:c78a:bf11
199.138.191.18 0:0:0:0:0:ffff:c78a:bf12
199.138.191.19 0:0:0:0:0:ffff:c78a:bf13
199.138.191.20 0:0:0:0:0:ffff:c78a:bf14
199.138.191.21 0:0:0:0:0:ffff:c78a:bf15
199.138.191.22 0:0:0:0:0:ffff:c78a:bf16
199.138.191.23 0:0:0:0:0:ffff:c78a:bf17
199.138.191.24 0:0:0:0:0:ffff:c78a:bf18
199.138.191.25 0:0:0:0:0:ffff:c78a:bf19
199.138.191.26 0:0:0:0:0:ffff:c78a:bf1a
199.138.191.27 0:0:0:0:0:ffff:c78a:bf1b
199.138.191.28 0:0:0:0:0:ffff:c78a:bf1c
199.138.191.29 0:0:0:0:0:ffff:c78a:bf1d
199.138.191.30 0:0:0:0:0:ffff:c78a:bf1e
199.138.191.31 0:0:0:0:0:ffff:c78a:bf1f
199.138.191.32 0:0:0:0:0:ffff:c78a:bf20
199.138.191.33 0:0:0:0:0:ffff:c78a:bf21
199.138.191.34 0:0:0:0:0:ffff:c78a:bf22
199.138.191.35 0:0:0:0:0:ffff:c78a:bf23
199.138.191.36 0:0:0:0:0:ffff:c78a:bf24
199.138.191.37 0:0:0:0:0:ffff:c78a:bf25
199.138.191.38 0:0:0:0:0:ffff:c78a:bf26
199.138.191.39 0:0:0:0:0:ffff:c78a:bf27
199.138.191.40 0:0:0:0:0:ffff:c78a:bf28
199.138.191.41 0:0:0:0:0:ffff:c78a:bf29
199.138.191.42 0:0:0:0:0:ffff:c78a:bf2a
199.138.191.43 0:0:0:0:0:ffff:c78a:bf2b
199.138.191.44 0:0:0:0:0:ffff:c78a:bf2c
199.138.191.45 0:0:0:0:0:ffff:c78a:bf2d
199.138.191.46 0:0:0:0:0:ffff:c78a:bf2e
199.138.191.47 0:0:0:0:0:ffff:c78a:bf2f
199.138.191.48 0:0:0:0:0:ffff:c78a:bf30
199.138.191.49 0:0:0:0:0:ffff:c78a:bf31
199.138.191.50 0:0:0:0:0:ffff:c78a:bf32
199.138.191.51 0:0:0:0:0:ffff:c78a:bf33
199.138.191.52 0:0:0:0:0:ffff:c78a:bf34
199.138.191.53 0:0:0:0:0:ffff:c78a:bf35
199.138.191.54 0:0:0:0:0:ffff:c78a:bf36
199.138.191.55 0:0:0:0:0:ffff:c78a:bf37
199.138.191.56 0:0:0:0:0:ffff:c78a:bf38
199.138.191.57 0:0:0:0:0:ffff:c78a:bf39
199.138.191.58 0:0:0:0:0:ffff:c78a:bf3a
199.138.191.59 0:0:0:0:0:ffff:c78a:bf3b
199.138.191.60 0:0:0:0:0:ffff:c78a:bf3c


199.138.191.61 0:0:0:0:0:ffff:c78a:bf3d
199.138.191.62 0:0:0:0:0:ffff:c78a:bf3e
199.138.191.63 0:0:0:0:0:ffff:c78a:bf3f
199.138.191.64 0:0:0:0:0:ffff:c78a:bf40
199.138.191.65 0:0:0:0:0:ffff:c78a:bf41
199.138.191.66 0:0:0:0:0:ffff:c78a:bf42
199.138.191.67 0:0:0:0:0:ffff:c78a:bf43
199.138.191.68 0:0:0:0:0:ffff:c78a:bf44
199.138.191.69 0:0:0:0:0:ffff:c78a:bf45
199.138.191.70 0:0:0:0:0:ffff:c78a:bf46
199.138.191.71 0:0:0:0:0:ffff:c78a:bf47
199.138.191.72 0:0:0:0:0:ffff:c78a:bf48
199.138.191.73 0:0:0:0:0:ffff:c78a:bf49
199.138.191.74 0:0:0:0:0:ffff:c78a:bf4a
199.138.191.75 0:0:0:0:0:ffff:c78a:bf4b
199.138.191.76 0:0:0:0:0:ffff:c78a:bf4c
199.138.191.77 0:0:0:0:0:ffff:c78a:bf4d
199.138.191.78 0:0:0:0:0:ffff:c78a:bf4e
199.138.191.79 0:0:0:0:0:ffff:c78a:bf4f
199.138.191.80 0:0:0:0:0:ffff:c78a:bf50
199.138.191.81 0:0:0:0:0:ffff:c78a:bf51
199.138.191.82 0:0:0:0:0:ffff:c78a:bf52
199.138.191.83 0:0:0:0:0:ffff:c78a:bf53
199.138.191.84 0:0:0:0:0:ffff:c78a:bf54
199.138.191.85 0:0:0:0:0:ffff:c78a:bf55
199.138.191.86 0:0:0:0:0:ffff:c78a:bf56
199.138.191.87 0:0:0:0:0:ffff:c78a:bf57
199.138.191.88 0:0:0:0:0:ffff:c78a:bf58
199.138.191.89 0:0:0:0:0:ffff:c78a:bf59
199.138.191.90 0:0:0:0:0:ffff:c78a:bf5a
199.138.191.91 0:0:0:0:0:ffff:c78a:bf5b
199.138.191.92 0:0:0:0:0:ffff:c78a:bf5c
199.138.191.93 0:0:0:0:0:ffff:c78a:bf5d
199.138.191.94 0:0:0:0:0:ffff:c78a:bf5e
199.138.191.95 0:0:0:0:0:ffff:c78a:bf5f
199.138.191.96 0:0:0:0:0:ffff:c78a:bf60
199.138.191.97 0:0:0:0:0:ffff:c78a:bf61
199.138.191.98 0:0:0:0:0:ffff:c78a:bf62
199.138.191.99 0:0:0:0:0:ffff:c78a:bf63
199.138.191.100 0:0:0:0:0:ffff:c78a:bf64
199.138.191.101 0:0:0:0:0:ffff:c78a:bf65
199.138.191.102 0:0:0:0:0:ffff:c78a:bf66
199.138.191.103 0:0:0:0:0:ffff:c78a:bf67
199.138.191.104 0:0:0:0:0:ffff:c78a:bf68
199.138.191.105 0:0:0:0:0:ffff:c78a:bf69
199.138.191.106 0:0:0:0:0:ffff:c78a:bf6a
199.138.191.107 0:0:0:0:0:ffff:c78a:bf6b
199.138.191.108 0:0:0:0:0:ffff:c78a:bf6c
199.138.191.109 0:0:0:0:0:ffff:c78a:bf6d
199.138.191.110 0:0:0:0:0:ffff:c78a:bf6e
199.138.191.111 0:0:0:0:0:ffff:c78a:bf6f
199.138.191.112 0:0:0:0:0:ffff:c78a:bf70
199.138.191.113 0:0:0:0:0:ffff:c78a:bf71
199.138.191.114 0:0:0:0:0:ffff:c78a:bf72
199.138.191.115 0:0:0:0:0:ffff:c78a:bf73
199.138.191.116 0:0:0:0:0:ffff:c78a:bf74
199.138.191.117 0:0:0:0:0:ffff:c78a:bf75
199.138.191.118 0:0:0:0:0:ffff:c78a:bf76
199.138.191.119 0:0:0:0:0:ffff:c78a:bf77
199.138.191.120 0:0:0:0:0:ffff:c78a:bf78


199.138.191.121 0:0:0:0:0:ffff:c78a:bf79
199.138.191.122 0:0:0:0:0:ffff:c78a:bf7a
199.138.191.123 0:0:0:0:0:ffff:c78a:bf7b
199.138.191.124 0:0:0:0:0:ffff:c78a:bf7c
199.138.191.125 0:0:0:0:0:ffff:c78a:bf7d
199.138.191.126 0:0:0:0:0:ffff:c78a:bf7e
199.138.191.127 0:0:0:0:0:ffff:c78a:bf7f
199.138.191.128 0:0:0:0:0:ffff:c78a:bf80
199.138.191.129 0:0:0:0:0:ffff:c78a:bf81
199.138.191.130 0:0:0:0:0:ffff:c78a:bf82
199.138.191.131 0:0:0:0:0:ffff:c78a:bf83
199.138.191.132 0:0:0:0:0:ffff:c78a:bf84
199.138.191.133 0:0:0:0:0:ffff:c78a:bf85
199.138.191.134 0:0:0:0:0:ffff:c78a:bf86
199.138.191.135 0:0:0:0:0:ffff:c78a:bf87
199.138.191.136 0:0:0:0:0:ffff:c78a:bf88
199.138.191.137 0:0:0:0:0:ffff:c78a:bf89
199.138.191.138 0:0:0:0:0:ffff:c78a:bf8a
199.138.191.139 0:0:0:0:0:ffff:c78a:bf8b
199.138.191.140 0:0:0:0:0:ffff:c78a:bf8c
199.138.191.141 0:0:0:0:0:ffff:c78a:bf8d
199.138.191.142 0:0:0:0:0:ffff:c78a:bf8e
199.138.191.143 0:0:0:0:0:ffff:c78a:bf8f
199.138.191.144 0:0:0:0:0:ffff:c78a:bf90
199.138.191.145 0:0:0:0:0:ffff:c78a:bf91
199.138.191.146 0:0:0:0:0:ffff:c78a:bf92
199.138.191.147 0:0:0:0:0:ffff:c78a:bf93
199.138.191.148 0:0:0:0:0:ffff:c78a:bf94
199.138.191.149 0:0:0:0:0:ffff:c78a:bf95
199.138.191.150 0:0:0:0:0:ffff:c78a:bf96
199.138.191.151 0:0:0:0:0:ffff:c78a:bf97
199.138.191.152 0:0:0:0:0:ffff:c78a:bf98
199.138.191.153 0:0:0:0:0:ffff:c78a:bf99
199.138.191.154 0:0:0:0:0:ffff:c78a:bf9a
199.138.191.155 0:0:0:0:0:ffff:c78a:bf9b
199.138.191.156 0:0:0:0:0:ffff:c78a:bf9c
199.138.191.157 0:0:0:0:0:ffff:c78a:bf9d
199.138.191.158 0:0:0:0:0:ffff:c78a:bf9e
199.138.191.159 0:0:0:0:0:ffff:c78a:bf9f
199.138.191.160 0:0:0:0:0:ffff:c78a:bfa0
199.138.191.161 0:0:0:0:0:ffff:c78a:bfa1
199.138.191.162 0:0:0:0:0:ffff:c78a:bfa2
199.138.191.163 0:0:0:0:0:ffff:c78a:bfa3
199.138.191.164 0:0:0:0:0:ffff:c78a:bfa4
199.138.191.165 0:0:0:0:0:ffff:c78a:bfa5
199.138.191.166 0:0:0:0:0:ffff:c78a:bfa6
199.138.191.167 0:0:0:0:0:ffff:c78a:bfa7
199.138.191.168 0:0:0:0:0:ffff:c78a:bfa8
199.138.191.169 0:0:0:0:0:ffff:c78a:bfa9
199.138.191.170 0:0:0:0:0:ffff:c78a:bfaa
199.138.191.171 0:0:0:0:0:ffff:c78a:bfab
199.138.191.172 0:0:0:0:0:ffff:c78a:bfac
199.138.191.173 0:0:0:0:0:ffff:c78a:bfad
199.138.191.174 0:0:0:0:0:ffff:c78a:bfae
199.138.191.175 0:0:0:0:0:ffff:c78a:bfaf
199.138.191.176 0:0:0:0:0:ffff:c78a:bfb0
199.138.191.177 0:0:0:0:0:ffff:c78a:bfb1
199.138.191.178 0:0:0:0:0:ffff:c78a:bfb2
199.138.191.179 0:0:0:0:0:ffff:c78a:bfb3
199.138.191.180 0:0:0:0:0:ffff:c78a:bfb4


199.138.191.181 0:0:0:0:0:ffff:c78a:bfb5
199.138.191.182 0:0:0:0:0:ffff:c78a:bfb6
199.138.191.183 0:0:0:0:0:ffff:c78a:bfb7
199.138.191.184 0:0:0:0:0:ffff:c78a:bfb8
199.138.191.185 0:0:0:0:0:ffff:c78a:bfb9
199.138.191.186 0:0:0:0:0:ffff:c78a:bfba
199.138.191.187 0:0:0:0:0:ffff:c78a:bfbb
199.138.191.188 0:0:0:0:0:ffff:c78a:bfbc
199.138.191.189 0:0:0:0:0:ffff:c78a:bfbd
199.138.191.190 0:0:0:0:0:ffff:c78a:bfbe
199.138.191.191 0:0:0:0:0:ffff:c78a:bfbf
199.138.191.192 0:0:0:0:0:ffff:c78a:bfc0
199.138.191.193 0:0:0:0:0:ffff:c78a:bfc1
199.138.191.194 0:0:0:0:0:ffff:c78a:bfc2
199.138.191.195 0:0:0:0:0:ffff:c78a:bfc3
199.138.191.196 0:0:0:0:0:ffff:c78a:bfc4
199.138.191.197 0:0:0:0:0:ffff:c78a:bfc5
199.138.191.198 0:0:0:0:0:ffff:c78a:bfc6
199.138.191.199 0:0:0:0:0:ffff:c78a:bfc7
199.138.191.200 0:0:0:0:0:ffff:c78a:bfc8
199.138.191.201 0:0:0:0:0:ffff:c78a:bfc9
199.138.191.202 0:0:0:0:0:ffff:c78a:bfca
199.138.191.203 0:0:0:0:0:ffff:c78a:bfcb
199.138.191.204 0:0:0:0:0:ffff:c78a:bfcc
199.138.191.205 0:0:0:0:0:ffff:c78a:bfcd
199.138.191.206 0:0:0:0:0:ffff:c78a:bfce
199.138.191.207 0:0:0:0:0:ffff:c78a:bfcf
199.138.191.208 0:0:0:0:0:ffff:c78a:bfd0
199.138.191.209 0:0:0:0:0:ffff:c78a:bfd1
199.138.191.210 0:0:0:0:0:ffff:c78a:bfd2
199.138.191.211 0:0:0:0:0:ffff:c78a:bfd3
199.138.191.212 0:0:0:0:0:ffff:c78a:bfd4
199.138.191.213 0:0:0:0:0:ffff:c78a:bfd5
199.138.191.214 0:0:0:0:0:ffff:c78a:bfd6
199.138.191.215 0:0:0:0:0:ffff:c78a:bfd7
199.138.191.216 0:0:0:0:0:ffff:c78a:bfd8
199.138.191.217 0:0:0:0:0:ffff:c78a:bfd9
199.138.191.218 0:0:0:0:0:ffff:c78a:bfda
199.138.191.219 0:0:0:0:0:ffff:c78a:bfdb
199.138.191.220 0:0:0:0:0:ffff:c78a:bfdc
199.138.191.221 0:0:0:0:0:ffff:c78a:bfdd
199.138.191.222 0:0:0:0:0:ffff:c78a:bfde
199.138.191.223 0:0:0:0:0:ffff:c78a:bfdf
199.138.191.224 0:0:0:0:0:ffff:c78a:bfe0
199.138.191.225 0:0:0:0:0:ffff:c78a:bfe1
199.138.191.226 0:0:0:0:0:ffff:c78a:bfe2
199.138.191.227 0:0:0:0:0:ffff:c78a:bfe3
199.138.191.228 0:0:0:0:0:ffff:c78a:bfe4
199.138.191.229 0:0:0:0:0:ffff:c78a:bfe5
199.138.191.230 0:0:0:0:0:ffff:c78a:bfe6
199.138.191.231 0:0:0:0:0:ffff:c78a:bfe7
199.138.191.232 0:0:0:0:0:ffff:c78a:bfe8
199.138.191.233 0:0:0:0:0:ffff:c78a:bfe9
199.138.191.234 0:0:0:0:0:ffff:c78a:bfea
199.138.191.235 0:0:0:0:0:ffff:c78a:bfeb
199.138.191.236 0:0:0:0:0:ffff:c78a:bfec
199.138.191.237 0:0:0:0:0:ffff:c78a:bfed
199.138.191.238 0:0:0:0:0:ffff:c78a:bfee
199.138.191.239 0:0:0:0:0:ffff:c78a:bfef
199.138.191.240 0:0:0:0:0:ffff:c78a:bff0
199.138.191.241 0:0:0:0:0:ffff:c78a:bff1
199.138.191.242 0:0:0:0:0:ffff:c78a:bff2
199.138.191.243 0:0:0:0:0:ffff:c78a:bff3
199.138.191.244 0:0:0:0:0:ffff:c78a:bff4
199.138.191.245 0:0:0:0:0:ffff:c78a:bff5
199.138.191.246 0:0:0:0:0:ffff:c78a:bff6
199.138.191.247 0:0:0:0:0:ffff:c78a:bff7
199.138.191.248 0:0:0:0:0:ffff:c78a:bff8
199.138.191.249 0:0:0:0:0:ffff:c78a:bff9
199.138.191.250 0:0:0:0:0:ffff:c78a:bffa
199.138.191.251 0:0:0:0:0:ffff:c78a:bffb
199.138.191.252 0:0:0:0:0:ffff:c78a:bffc
199.138.191.253 0:0:0:0:0:ffff:c78a:bffd
199.138.191.254 0:0:0:0:0:ffff:c78a:bffe
199.138.191.255 0:0:0:0:0:ffff:c78a:bfff


How we got IPv4 subnet masks?

An IPv4 subnet mask consists of 32 bits; it is a sequence of ones (1) followed by a block of zeros (0). The ones indicate bits in the address used for the network prefix and the trailing block of zeros designates that part as being the host identifier.