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
15.222.121.1 0:0:0:0:0:ffff:fde:7901
15.222.121.2 0:0:0:0:0:ffff:fde:7902
15.222.121.3 0:0:0:0:0:ffff:fde:7903
15.222.121.4 0:0:0:0:0:ffff:fde:7904
15.222.121.5 0:0:0:0:0:ffff:fde:7905
15.222.121.6 0:0:0:0:0:ffff:fde:7906
15.222.121.7 0:0:0:0:0:ffff:fde:7907
15.222.121.8 0:0:0:0:0:ffff:fde:7908
15.222.121.9 0:0:0:0:0:ffff:fde:7909
15.222.121.10 0:0:0:0:0:ffff:fde:790a
15.222.121.11 0:0:0:0:0:ffff:fde:790b
15.222.121.12 0:0:0:0:0:ffff:fde:790c
15.222.121.13 0:0:0:0:0:ffff:fde:790d
15.222.121.14 0:0:0:0:0:ffff:fde:790e
15.222.121.15 0:0:0:0:0:ffff:fde:790f
15.222.121.16 0:0:0:0:0:ffff:fde:7910
15.222.121.17 0:0:0:0:0:ffff:fde:7911
15.222.121.18 0:0:0:0:0:ffff:fde:7912
15.222.121.19 0:0:0:0:0:ffff:fde:7913
15.222.121.20 0:0:0:0:0:ffff:fde:7914
15.222.121.21 0:0:0:0:0:ffff:fde:7915
15.222.121.22 0:0:0:0:0:ffff:fde:7916
15.222.121.23 0:0:0:0:0:ffff:fde:7917
15.222.121.24 0:0:0:0:0:ffff:fde:7918
15.222.121.25 0:0:0:0:0:ffff:fde:7919
15.222.121.26 0:0:0:0:0:ffff:fde:791a
15.222.121.27 0:0:0:0:0:ffff:fde:791b
15.222.121.28 0:0:0:0:0:ffff:fde:791c
15.222.121.29 0:0:0:0:0:ffff:fde:791d
15.222.121.30 0:0:0:0:0:ffff:fde:791e
15.222.121.31 0:0:0:0:0:ffff:fde:791f
15.222.121.32 0:0:0:0:0:ffff:fde:7920
15.222.121.33 0:0:0:0:0:ffff:fde:7921
15.222.121.34 0:0:0:0:0:ffff:fde:7922
15.222.121.35 0:0:0:0:0:ffff:fde:7923
15.222.121.36 0:0:0:0:0:ffff:fde:7924
15.222.121.37 0:0:0:0:0:ffff:fde:7925
15.222.121.38 0:0:0:0:0:ffff:fde:7926
15.222.121.39 0:0:0:0:0:ffff:fde:7927
15.222.121.40 0:0:0:0:0:ffff:fde:7928
15.222.121.41 0:0:0:0:0:ffff:fde:7929
15.222.121.42 0:0:0:0:0:ffff:fde:792a
15.222.121.43 0:0:0:0:0:ffff:fde:792b
15.222.121.44 0:0:0:0:0:ffff:fde:792c
15.222.121.45 0:0:0:0:0:ffff:fde:792d
15.222.121.46 0:0:0:0:0:ffff:fde:792e
15.222.121.47 0:0:0:0:0:ffff:fde:792f
15.222.121.48 0:0:0:0:0:ffff:fde:7930
15.222.121.49 0:0:0:0:0:ffff:fde:7931
15.222.121.50 0:0:0:0:0:ffff:fde:7932
15.222.121.51 0:0:0:0:0:ffff:fde:7933
15.222.121.52 0:0:0:0:0:ffff:fde:7934
15.222.121.53 0:0:0:0:0:ffff:fde:7935
15.222.121.54 0:0:0:0:0:ffff:fde:7936
15.222.121.55 0:0:0:0:0:ffff:fde:7937
15.222.121.56 0:0:0:0:0:ffff:fde:7938
15.222.121.57 0:0:0:0:0:ffff:fde:7939
15.222.121.58 0:0:0:0:0:ffff:fde:793a
15.222.121.59 0:0:0:0:0:ffff:fde:793b
15.222.121.60 0:0:0:0:0:ffff:fde:793c


15.222.121.61 0:0:0:0:0:ffff:fde:793d
15.222.121.62 0:0:0:0:0:ffff:fde:793e
15.222.121.63 0:0:0:0:0:ffff:fde:793f
15.222.121.64 0:0:0:0:0:ffff:fde:7940
15.222.121.65 0:0:0:0:0:ffff:fde:7941
15.222.121.66 0:0:0:0:0:ffff:fde:7942
15.222.121.67 0:0:0:0:0:ffff:fde:7943
15.222.121.68 0:0:0:0:0:ffff:fde:7944
15.222.121.69 0:0:0:0:0:ffff:fde:7945
15.222.121.70 0:0:0:0:0:ffff:fde:7946
15.222.121.71 0:0:0:0:0:ffff:fde:7947
15.222.121.72 0:0:0:0:0:ffff:fde:7948
15.222.121.73 0:0:0:0:0:ffff:fde:7949
15.222.121.74 0:0:0:0:0:ffff:fde:794a
15.222.121.75 0:0:0:0:0:ffff:fde:794b
15.222.121.76 0:0:0:0:0:ffff:fde:794c
15.222.121.77 0:0:0:0:0:ffff:fde:794d
15.222.121.78 0:0:0:0:0:ffff:fde:794e
15.222.121.79 0:0:0:0:0:ffff:fde:794f
15.222.121.80 0:0:0:0:0:ffff:fde:7950
15.222.121.81 0:0:0:0:0:ffff:fde:7951
15.222.121.82 0:0:0:0:0:ffff:fde:7952
15.222.121.83 0:0:0:0:0:ffff:fde:7953
15.222.121.84 0:0:0:0:0:ffff:fde:7954
15.222.121.85 0:0:0:0:0:ffff:fde:7955
15.222.121.86 0:0:0:0:0:ffff:fde:7956
15.222.121.87 0:0:0:0:0:ffff:fde:7957
15.222.121.88 0:0:0:0:0:ffff:fde:7958
15.222.121.89 0:0:0:0:0:ffff:fde:7959
15.222.121.90 0:0:0:0:0:ffff:fde:795a
15.222.121.91 0:0:0:0:0:ffff:fde:795b
15.222.121.92 0:0:0:0:0:ffff:fde:795c
15.222.121.93 0:0:0:0:0:ffff:fde:795d
15.222.121.94 0:0:0:0:0:ffff:fde:795e
15.222.121.95 0:0:0:0:0:ffff:fde:795f
15.222.121.96 0:0:0:0:0:ffff:fde:7960
15.222.121.97 0:0:0:0:0:ffff:fde:7961
15.222.121.98 0:0:0:0:0:ffff:fde:7962
15.222.121.99 0:0:0:0:0:ffff:fde:7963
15.222.121.100 0:0:0:0:0:ffff:fde:7964
15.222.121.101 0:0:0:0:0:ffff:fde:7965
15.222.121.102 0:0:0:0:0:ffff:fde:7966
15.222.121.103 0:0:0:0:0:ffff:fde:7967
15.222.121.104 0:0:0:0:0:ffff:fde:7968
15.222.121.105 0:0:0:0:0:ffff:fde:7969
15.222.121.106 0:0:0:0:0:ffff:fde:796a
15.222.121.107 0:0:0:0:0:ffff:fde:796b
15.222.121.108 0:0:0:0:0:ffff:fde:796c
15.222.121.109 0:0:0:0:0:ffff:fde:796d
15.222.121.110 0:0:0:0:0:ffff:fde:796e
15.222.121.111 0:0:0:0:0:ffff:fde:796f
15.222.121.112 0:0:0:0:0:ffff:fde:7970
15.222.121.113 0:0:0:0:0:ffff:fde:7971
15.222.121.114 0:0:0:0:0:ffff:fde:7972
15.222.121.115 0:0:0:0:0:ffff:fde:7973
15.222.121.116 0:0:0:0:0:ffff:fde:7974
15.222.121.117 0:0:0:0:0:ffff:fde:7975
15.222.121.118 0:0:0:0:0:ffff:fde:7976
15.222.121.119 0:0:0:0:0:ffff:fde:7977
15.222.121.120 0:0:0:0:0:ffff:fde:7978


15.222.121.121 0:0:0:0:0:ffff:fde:7979
15.222.121.122 0:0:0:0:0:ffff:fde:797a
15.222.121.123 0:0:0:0:0:ffff:fde:797b
15.222.121.124 0:0:0:0:0:ffff:fde:797c
15.222.121.125 0:0:0:0:0:ffff:fde:797d
15.222.121.126 0:0:0:0:0:ffff:fde:797e
15.222.121.127 0:0:0:0:0:ffff:fde:797f
15.222.121.128 0:0:0:0:0:ffff:fde:7980
15.222.121.129 0:0:0:0:0:ffff:fde:7981
15.222.121.130 0:0:0:0:0:ffff:fde:7982
15.222.121.131 0:0:0:0:0:ffff:fde:7983
15.222.121.132 0:0:0:0:0:ffff:fde:7984
15.222.121.133 0:0:0:0:0:ffff:fde:7985
15.222.121.134 0:0:0:0:0:ffff:fde:7986
15.222.121.135 0:0:0:0:0:ffff:fde:7987
15.222.121.136 0:0:0:0:0:ffff:fde:7988
15.222.121.137 0:0:0:0:0:ffff:fde:7989
15.222.121.138 0:0:0:0:0:ffff:fde:798a
15.222.121.139 0:0:0:0:0:ffff:fde:798b
15.222.121.140 0:0:0:0:0:ffff:fde:798c
15.222.121.141 0:0:0:0:0:ffff:fde:798d
15.222.121.142 0:0:0:0:0:ffff:fde:798e
15.222.121.143 0:0:0:0:0:ffff:fde:798f
15.222.121.144 0:0:0:0:0:ffff:fde:7990
15.222.121.145 0:0:0:0:0:ffff:fde:7991
15.222.121.146 0:0:0:0:0:ffff:fde:7992
15.222.121.147 0:0:0:0:0:ffff:fde:7993
15.222.121.148 0:0:0:0:0:ffff:fde:7994
15.222.121.149 0:0:0:0:0:ffff:fde:7995
15.222.121.150 0:0:0:0:0:ffff:fde:7996
15.222.121.151 0:0:0:0:0:ffff:fde:7997
15.222.121.152 0:0:0:0:0:ffff:fde:7998
15.222.121.153 0:0:0:0:0:ffff:fde:7999
15.222.121.154 0:0:0:0:0:ffff:fde:799a
15.222.121.155 0:0:0:0:0:ffff:fde:799b
15.222.121.156 0:0:0:0:0:ffff:fde:799c
15.222.121.157 0:0:0:0:0:ffff:fde:799d
15.222.121.158 0:0:0:0:0:ffff:fde:799e
15.222.121.159 0:0:0:0:0:ffff:fde:799f
15.222.121.160 0:0:0:0:0:ffff:fde:79a0
15.222.121.161 0:0:0:0:0:ffff:fde:79a1
15.222.121.162 0:0:0:0:0:ffff:fde:79a2
15.222.121.163 0:0:0:0:0:ffff:fde:79a3
15.222.121.164 0:0:0:0:0:ffff:fde:79a4
15.222.121.165 0:0:0:0:0:ffff:fde:79a5
15.222.121.166 0:0:0:0:0:ffff:fde:79a6
15.222.121.167 0:0:0:0:0:ffff:fde:79a7
15.222.121.168 0:0:0:0:0:ffff:fde:79a8
15.222.121.169 0:0:0:0:0:ffff:fde:79a9
15.222.121.170 0:0:0:0:0:ffff:fde:79aa
15.222.121.171 0:0:0:0:0:ffff:fde:79ab
15.222.121.172 0:0:0:0:0:ffff:fde:79ac
15.222.121.173 0:0:0:0:0:ffff:fde:79ad
15.222.121.174 0:0:0:0:0:ffff:fde:79ae
15.222.121.175 0:0:0:0:0:ffff:fde:79af
15.222.121.176 0:0:0:0:0:ffff:fde:79b0
15.222.121.177 0:0:0:0:0:ffff:fde:79b1
15.222.121.178 0:0:0:0:0:ffff:fde:79b2
15.222.121.179 0:0:0:0:0:ffff:fde:79b3
15.222.121.180 0:0:0:0:0:ffff:fde:79b4


15.222.121.181 0:0:0:0:0:ffff:fde:79b5
15.222.121.182 0:0:0:0:0:ffff:fde:79b6
15.222.121.183 0:0:0:0:0:ffff:fde:79b7
15.222.121.184 0:0:0:0:0:ffff:fde:79b8
15.222.121.185 0:0:0:0:0:ffff:fde:79b9
15.222.121.186 0:0:0:0:0:ffff:fde:79ba
15.222.121.187 0:0:0:0:0:ffff:fde:79bb
15.222.121.188 0:0:0:0:0:ffff:fde:79bc
15.222.121.189 0:0:0:0:0:ffff:fde:79bd
15.222.121.190 0:0:0:0:0:ffff:fde:79be
15.222.121.191 0:0:0:0:0:ffff:fde:79bf
15.222.121.192 0:0:0:0:0:ffff:fde:79c0
15.222.121.193 0:0:0:0:0:ffff:fde:79c1
15.222.121.194 0:0:0:0:0:ffff:fde:79c2
15.222.121.195 0:0:0:0:0:ffff:fde:79c3
15.222.121.196 0:0:0:0:0:ffff:fde:79c4
15.222.121.197 0:0:0:0:0:ffff:fde:79c5
15.222.121.198 0:0:0:0:0:ffff:fde:79c6
15.222.121.199 0:0:0:0:0:ffff:fde:79c7
15.222.121.200 0:0:0:0:0:ffff:fde:79c8
15.222.121.201 0:0:0:0:0:ffff:fde:79c9
15.222.121.202 0:0:0:0:0:ffff:fde:79ca
15.222.121.203 0:0:0:0:0:ffff:fde:79cb
15.222.121.204 0:0:0:0:0:ffff:fde:79cc
15.222.121.205 0:0:0:0:0:ffff:fde:79cd
15.222.121.206 0:0:0:0:0:ffff:fde:79ce
15.222.121.207 0:0:0:0:0:ffff:fde:79cf
15.222.121.208 0:0:0:0:0:ffff:fde:79d0
15.222.121.209 0:0:0:0:0:ffff:fde:79d1
15.222.121.210 0:0:0:0:0:ffff:fde:79d2
15.222.121.211 0:0:0:0:0:ffff:fde:79d3
15.222.121.212 0:0:0:0:0:ffff:fde:79d4
15.222.121.213 0:0:0:0:0:ffff:fde:79d5
15.222.121.214 0:0:0:0:0:ffff:fde:79d6
15.222.121.215 0:0:0:0:0:ffff:fde:79d7
15.222.121.216 0:0:0:0:0:ffff:fde:79d8
15.222.121.217 0:0:0:0:0:ffff:fde:79d9
15.222.121.218 0:0:0:0:0:ffff:fde:79da
15.222.121.219 0:0:0:0:0:ffff:fde:79db
15.222.121.220 0:0:0:0:0:ffff:fde:79dc
15.222.121.221 0:0:0:0:0:ffff:fde:79dd
15.222.121.222 0:0:0:0:0:ffff:fde:79de
15.222.121.223 0:0:0:0:0:ffff:fde:79df
15.222.121.224 0:0:0:0:0:ffff:fde:79e0
15.222.121.225 0:0:0:0:0:ffff:fde:79e1
15.222.121.226 0:0:0:0:0:ffff:fde:79e2
15.222.121.227 0:0:0:0:0:ffff:fde:79e3
15.222.121.228 0:0:0:0:0:ffff:fde:79e4
15.222.121.229 0:0:0:0:0:ffff:fde:79e5
15.222.121.230 0:0:0:0:0:ffff:fde:79e6
15.222.121.231 0:0:0:0:0:ffff:fde:79e7
15.222.121.232 0:0:0:0:0:ffff:fde:79e8
15.222.121.233 0:0:0:0:0:ffff:fde:79e9
15.222.121.234 0:0:0:0:0:ffff:fde:79ea
15.222.121.235 0:0:0:0:0:ffff:fde:79eb
15.222.121.236 0:0:0:0:0:ffff:fde:79ec
15.222.121.237 0:0:0:0:0:ffff:fde:79ed
15.222.121.238 0:0:0:0:0:ffff:fde:79ee
15.222.121.239 0:0:0:0:0:ffff:fde:79ef
15.222.121.240 0:0:0:0:0:ffff:fde:79f0
15.222.121.241 0:0:0:0:0:ffff:fde:79f1
15.222.121.242 0:0:0:0:0:ffff:fde:79f2
15.222.121.243 0:0:0:0:0:ffff:fde:79f3
15.222.121.244 0:0:0:0:0:ffff:fde:79f4
15.222.121.245 0:0:0:0:0:ffff:fde:79f5
15.222.121.246 0:0:0:0:0:ffff:fde:79f6
15.222.121.247 0:0:0:0:0:ffff:fde:79f7
15.222.121.248 0:0:0:0:0:ffff:fde:79f8
15.222.121.249 0:0:0:0:0:ffff:fde:79f9
15.222.121.250 0:0:0:0:0:ffff:fde:79fa
15.222.121.251 0:0:0:0:0:ffff:fde:79fb
15.222.121.252 0:0:0:0:0:ffff:fde:79fc
15.222.121.253 0:0:0:0:0:ffff:fde:79fd
15.222.121.254 0:0:0:0:0:ffff:fde:79fe
15.222.121.255 0:0:0:0:0:ffff:fde:79ff


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.