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
144.21.55.1 0:0:0:0:0:ffff:9015:3701
144.21.55.2 0:0:0:0:0:ffff:9015:3702
144.21.55.3 0:0:0:0:0:ffff:9015:3703
144.21.55.4 0:0:0:0:0:ffff:9015:3704
144.21.55.5 0:0:0:0:0:ffff:9015:3705
144.21.55.6 0:0:0:0:0:ffff:9015:3706
144.21.55.7 0:0:0:0:0:ffff:9015:3707
144.21.55.8 0:0:0:0:0:ffff:9015:3708
144.21.55.9 0:0:0:0:0:ffff:9015:3709
144.21.55.10 0:0:0:0:0:ffff:9015:370a
144.21.55.11 0:0:0:0:0:ffff:9015:370b
144.21.55.12 0:0:0:0:0:ffff:9015:370c
144.21.55.13 0:0:0:0:0:ffff:9015:370d
144.21.55.14 0:0:0:0:0:ffff:9015:370e
144.21.55.15 0:0:0:0:0:ffff:9015:370f
144.21.55.16 0:0:0:0:0:ffff:9015:3710
144.21.55.17 0:0:0:0:0:ffff:9015:3711
144.21.55.18 0:0:0:0:0:ffff:9015:3712
144.21.55.19 0:0:0:0:0:ffff:9015:3713
144.21.55.20 0:0:0:0:0:ffff:9015:3714
144.21.55.21 0:0:0:0:0:ffff:9015:3715
144.21.55.22 0:0:0:0:0:ffff:9015:3716
144.21.55.23 0:0:0:0:0:ffff:9015:3717
144.21.55.24 0:0:0:0:0:ffff:9015:3718
144.21.55.25 0:0:0:0:0:ffff:9015:3719
144.21.55.26 0:0:0:0:0:ffff:9015:371a
144.21.55.27 0:0:0:0:0:ffff:9015:371b
144.21.55.28 0:0:0:0:0:ffff:9015:371c
144.21.55.29 0:0:0:0:0:ffff:9015:371d
144.21.55.30 0:0:0:0:0:ffff:9015:371e
144.21.55.31 0:0:0:0:0:ffff:9015:371f
144.21.55.32 0:0:0:0:0:ffff:9015:3720
144.21.55.33 0:0:0:0:0:ffff:9015:3721
144.21.55.34 0:0:0:0:0:ffff:9015:3722
144.21.55.35 0:0:0:0:0:ffff:9015:3723
144.21.55.36 0:0:0:0:0:ffff:9015:3724
144.21.55.37 0:0:0:0:0:ffff:9015:3725
144.21.55.38 0:0:0:0:0:ffff:9015:3726
144.21.55.39 0:0:0:0:0:ffff:9015:3727
144.21.55.40 0:0:0:0:0:ffff:9015:3728
144.21.55.41 0:0:0:0:0:ffff:9015:3729
144.21.55.42 0:0:0:0:0:ffff:9015:372a
144.21.55.43 0:0:0:0:0:ffff:9015:372b
144.21.55.44 0:0:0:0:0:ffff:9015:372c
144.21.55.45 0:0:0:0:0:ffff:9015:372d
144.21.55.46 0:0:0:0:0:ffff:9015:372e
144.21.55.47 0:0:0:0:0:ffff:9015:372f
144.21.55.48 0:0:0:0:0:ffff:9015:3730
144.21.55.49 0:0:0:0:0:ffff:9015:3731
144.21.55.50 0:0:0:0:0:ffff:9015:3732
144.21.55.51 0:0:0:0:0:ffff:9015:3733
144.21.55.52 0:0:0:0:0:ffff:9015:3734
144.21.55.53 0:0:0:0:0:ffff:9015:3735
144.21.55.54 0:0:0:0:0:ffff:9015:3736
144.21.55.55 0:0:0:0:0:ffff:9015:3737
144.21.55.56 0:0:0:0:0:ffff:9015:3738
144.21.55.57 0:0:0:0:0:ffff:9015:3739
144.21.55.58 0:0:0:0:0:ffff:9015:373a
144.21.55.59 0:0:0:0:0:ffff:9015:373b
144.21.55.60 0:0:0:0:0:ffff:9015:373c


144.21.55.61 0:0:0:0:0:ffff:9015:373d
144.21.55.62 0:0:0:0:0:ffff:9015:373e
144.21.55.63 0:0:0:0:0:ffff:9015:373f
144.21.55.64 0:0:0:0:0:ffff:9015:3740
144.21.55.65 0:0:0:0:0:ffff:9015:3741
144.21.55.66 0:0:0:0:0:ffff:9015:3742
144.21.55.67 0:0:0:0:0:ffff:9015:3743
144.21.55.68 0:0:0:0:0:ffff:9015:3744
144.21.55.69 0:0:0:0:0:ffff:9015:3745
144.21.55.70 0:0:0:0:0:ffff:9015:3746
144.21.55.71 0:0:0:0:0:ffff:9015:3747
144.21.55.72 0:0:0:0:0:ffff:9015:3748
144.21.55.73 0:0:0:0:0:ffff:9015:3749
144.21.55.74 0:0:0:0:0:ffff:9015:374a
144.21.55.75 0:0:0:0:0:ffff:9015:374b
144.21.55.76 0:0:0:0:0:ffff:9015:374c
144.21.55.77 0:0:0:0:0:ffff:9015:374d
144.21.55.78 0:0:0:0:0:ffff:9015:374e
144.21.55.79 0:0:0:0:0:ffff:9015:374f
144.21.55.80 0:0:0:0:0:ffff:9015:3750
144.21.55.81 0:0:0:0:0:ffff:9015:3751
144.21.55.82 0:0:0:0:0:ffff:9015:3752
144.21.55.83 0:0:0:0:0:ffff:9015:3753
144.21.55.84 0:0:0:0:0:ffff:9015:3754
144.21.55.85 0:0:0:0:0:ffff:9015:3755
144.21.55.86 0:0:0:0:0:ffff:9015:3756
144.21.55.87 0:0:0:0:0:ffff:9015:3757
144.21.55.88 0:0:0:0:0:ffff:9015:3758
144.21.55.89 0:0:0:0:0:ffff:9015:3759
144.21.55.90 0:0:0:0:0:ffff:9015:375a
144.21.55.91 0:0:0:0:0:ffff:9015:375b
144.21.55.92 0:0:0:0:0:ffff:9015:375c
144.21.55.93 0:0:0:0:0:ffff:9015:375d
144.21.55.94 0:0:0:0:0:ffff:9015:375e
144.21.55.95 0:0:0:0:0:ffff:9015:375f
144.21.55.96 0:0:0:0:0:ffff:9015:3760
144.21.55.97 0:0:0:0:0:ffff:9015:3761
144.21.55.98 0:0:0:0:0:ffff:9015:3762
144.21.55.99 0:0:0:0:0:ffff:9015:3763
144.21.55.100 0:0:0:0:0:ffff:9015:3764
144.21.55.101 0:0:0:0:0:ffff:9015:3765
144.21.55.102 0:0:0:0:0:ffff:9015:3766
144.21.55.103 0:0:0:0:0:ffff:9015:3767
144.21.55.104 0:0:0:0:0:ffff:9015:3768
144.21.55.105 0:0:0:0:0:ffff:9015:3769
144.21.55.106 0:0:0:0:0:ffff:9015:376a
144.21.55.107 0:0:0:0:0:ffff:9015:376b
144.21.55.108 0:0:0:0:0:ffff:9015:376c
144.21.55.109 0:0:0:0:0:ffff:9015:376d
144.21.55.110 0:0:0:0:0:ffff:9015:376e
144.21.55.111 0:0:0:0:0:ffff:9015:376f
144.21.55.112 0:0:0:0:0:ffff:9015:3770
144.21.55.113 0:0:0:0:0:ffff:9015:3771
144.21.55.114 0:0:0:0:0:ffff:9015:3772
144.21.55.115 0:0:0:0:0:ffff:9015:3773
144.21.55.116 0:0:0:0:0:ffff:9015:3774
144.21.55.117 0:0:0:0:0:ffff:9015:3775
144.21.55.118 0:0:0:0:0:ffff:9015:3776
144.21.55.119 0:0:0:0:0:ffff:9015:3777
144.21.55.120 0:0:0:0:0:ffff:9015:3778


144.21.55.121 0:0:0:0:0:ffff:9015:3779
144.21.55.122 0:0:0:0:0:ffff:9015:377a
144.21.55.123 0:0:0:0:0:ffff:9015:377b
144.21.55.124 0:0:0:0:0:ffff:9015:377c
144.21.55.125 0:0:0:0:0:ffff:9015:377d
144.21.55.126 0:0:0:0:0:ffff:9015:377e
144.21.55.127 0:0:0:0:0:ffff:9015:377f
144.21.55.128 0:0:0:0:0:ffff:9015:3780
144.21.55.129 0:0:0:0:0:ffff:9015:3781
144.21.55.130 0:0:0:0:0:ffff:9015:3782
144.21.55.131 0:0:0:0:0:ffff:9015:3783
144.21.55.132 0:0:0:0:0:ffff:9015:3784
144.21.55.133 0:0:0:0:0:ffff:9015:3785
144.21.55.134 0:0:0:0:0:ffff:9015:3786
144.21.55.135 0:0:0:0:0:ffff:9015:3787
144.21.55.136 0:0:0:0:0:ffff:9015:3788
144.21.55.137 0:0:0:0:0:ffff:9015:3789
144.21.55.138 0:0:0:0:0:ffff:9015:378a
144.21.55.139 0:0:0:0:0:ffff:9015:378b
144.21.55.140 0:0:0:0:0:ffff:9015:378c
144.21.55.141 0:0:0:0:0:ffff:9015:378d
144.21.55.142 0:0:0:0:0:ffff:9015:378e
144.21.55.143 0:0:0:0:0:ffff:9015:378f
144.21.55.144 0:0:0:0:0:ffff:9015:3790
144.21.55.145 0:0:0:0:0:ffff:9015:3791
144.21.55.146 0:0:0:0:0:ffff:9015:3792
144.21.55.147 0:0:0:0:0:ffff:9015:3793
144.21.55.148 0:0:0:0:0:ffff:9015:3794
144.21.55.149 0:0:0:0:0:ffff:9015:3795
144.21.55.150 0:0:0:0:0:ffff:9015:3796
144.21.55.151 0:0:0:0:0:ffff:9015:3797
144.21.55.152 0:0:0:0:0:ffff:9015:3798
144.21.55.153 0:0:0:0:0:ffff:9015:3799
144.21.55.154 0:0:0:0:0:ffff:9015:379a
144.21.55.155 0:0:0:0:0:ffff:9015:379b
144.21.55.156 0:0:0:0:0:ffff:9015:379c
144.21.55.157 0:0:0:0:0:ffff:9015:379d
144.21.55.158 0:0:0:0:0:ffff:9015:379e
144.21.55.159 0:0:0:0:0:ffff:9015:379f
144.21.55.160 0:0:0:0:0:ffff:9015:37a0
144.21.55.161 0:0:0:0:0:ffff:9015:37a1
144.21.55.162 0:0:0:0:0:ffff:9015:37a2
144.21.55.163 0:0:0:0:0:ffff:9015:37a3
144.21.55.164 0:0:0:0:0:ffff:9015:37a4
144.21.55.165 0:0:0:0:0:ffff:9015:37a5
144.21.55.166 0:0:0:0:0:ffff:9015:37a6
144.21.55.167 0:0:0:0:0:ffff:9015:37a7
144.21.55.168 0:0:0:0:0:ffff:9015:37a8
144.21.55.169 0:0:0:0:0:ffff:9015:37a9
144.21.55.170 0:0:0:0:0:ffff:9015:37aa
144.21.55.171 0:0:0:0:0:ffff:9015:37ab
144.21.55.172 0:0:0:0:0:ffff:9015:37ac
144.21.55.173 0:0:0:0:0:ffff:9015:37ad
144.21.55.174 0:0:0:0:0:ffff:9015:37ae
144.21.55.175 0:0:0:0:0:ffff:9015:37af
144.21.55.176 0:0:0:0:0:ffff:9015:37b0
144.21.55.177 0:0:0:0:0:ffff:9015:37b1
144.21.55.178 0:0:0:0:0:ffff:9015:37b2
144.21.55.179 0:0:0:0:0:ffff:9015:37b3
144.21.55.180 0:0:0:0:0:ffff:9015:37b4


144.21.55.181 0:0:0:0:0:ffff:9015:37b5
144.21.55.182 0:0:0:0:0:ffff:9015:37b6
144.21.55.183 0:0:0:0:0:ffff:9015:37b7
144.21.55.184 0:0:0:0:0:ffff:9015:37b8
144.21.55.185 0:0:0:0:0:ffff:9015:37b9
144.21.55.186 0:0:0:0:0:ffff:9015:37ba
144.21.55.187 0:0:0:0:0:ffff:9015:37bb
144.21.55.188 0:0:0:0:0:ffff:9015:37bc
144.21.55.189 0:0:0:0:0:ffff:9015:37bd
144.21.55.190 0:0:0:0:0:ffff:9015:37be
144.21.55.191 0:0:0:0:0:ffff:9015:37bf
144.21.55.192 0:0:0:0:0:ffff:9015:37c0
144.21.55.193 0:0:0:0:0:ffff:9015:37c1
144.21.55.194 0:0:0:0:0:ffff:9015:37c2
144.21.55.195 0:0:0:0:0:ffff:9015:37c3
144.21.55.196 0:0:0:0:0:ffff:9015:37c4
144.21.55.197 0:0:0:0:0:ffff:9015:37c5
144.21.55.198 0:0:0:0:0:ffff:9015:37c6
144.21.55.199 0:0:0:0:0:ffff:9015:37c7
144.21.55.200 0:0:0:0:0:ffff:9015:37c8
144.21.55.201 0:0:0:0:0:ffff:9015:37c9
144.21.55.202 0:0:0:0:0:ffff:9015:37ca
144.21.55.203 0:0:0:0:0:ffff:9015:37cb
144.21.55.204 0:0:0:0:0:ffff:9015:37cc
144.21.55.205 0:0:0:0:0:ffff:9015:37cd
144.21.55.206 0:0:0:0:0:ffff:9015:37ce
144.21.55.207 0:0:0:0:0:ffff:9015:37cf
144.21.55.208 0:0:0:0:0:ffff:9015:37d0
144.21.55.209 0:0:0:0:0:ffff:9015:37d1
144.21.55.210 0:0:0:0:0:ffff:9015:37d2
144.21.55.211 0:0:0:0:0:ffff:9015:37d3
144.21.55.212 0:0:0:0:0:ffff:9015:37d4
144.21.55.213 0:0:0:0:0:ffff:9015:37d5
144.21.55.214 0:0:0:0:0:ffff:9015:37d6
144.21.55.215 0:0:0:0:0:ffff:9015:37d7
144.21.55.216 0:0:0:0:0:ffff:9015:37d8
144.21.55.217 0:0:0:0:0:ffff:9015:37d9
144.21.55.218 0:0:0:0:0:ffff:9015:37da
144.21.55.219 0:0:0:0:0:ffff:9015:37db
144.21.55.220 0:0:0:0:0:ffff:9015:37dc
144.21.55.221 0:0:0:0:0:ffff:9015:37dd
144.21.55.222 0:0:0:0:0:ffff:9015:37de
144.21.55.223 0:0:0:0:0:ffff:9015:37df
144.21.55.224 0:0:0:0:0:ffff:9015:37e0
144.21.55.225 0:0:0:0:0:ffff:9015:37e1
144.21.55.226 0:0:0:0:0:ffff:9015:37e2
144.21.55.227 0:0:0:0:0:ffff:9015:37e3
144.21.55.228 0:0:0:0:0:ffff:9015:37e4
144.21.55.229 0:0:0:0:0:ffff:9015:37e5
144.21.55.230 0:0:0:0:0:ffff:9015:37e6
144.21.55.231 0:0:0:0:0:ffff:9015:37e7
144.21.55.232 0:0:0:0:0:ffff:9015:37e8
144.21.55.233 0:0:0:0:0:ffff:9015:37e9
144.21.55.234 0:0:0:0:0:ffff:9015:37ea
144.21.55.235 0:0:0:0:0:ffff:9015:37eb
144.21.55.236 0:0:0:0:0:ffff:9015:37ec
144.21.55.237 0:0:0:0:0:ffff:9015:37ed
144.21.55.238 0:0:0:0:0:ffff:9015:37ee
144.21.55.239 0:0:0:0:0:ffff:9015:37ef
144.21.55.240 0:0:0:0:0:ffff:9015:37f0
144.21.55.241 0:0:0:0:0:ffff:9015:37f1
144.21.55.242 0:0:0:0:0:ffff:9015:37f2
144.21.55.243 0:0:0:0:0:ffff:9015:37f3
144.21.55.244 0:0:0:0:0:ffff:9015:37f4
144.21.55.245 0:0:0:0:0:ffff:9015:37f5
144.21.55.246 0:0:0:0:0:ffff:9015:37f6
144.21.55.247 0:0:0:0:0:ffff:9015:37f7
144.21.55.248 0:0:0:0:0:ffff:9015:37f8
144.21.55.249 0:0:0:0:0:ffff:9015:37f9
144.21.55.250 0:0:0:0:0:ffff:9015:37fa
144.21.55.251 0:0:0:0:0:ffff:9015:37fb
144.21.55.252 0:0:0:0:0:ffff:9015:37fc
144.21.55.253 0:0:0:0:0:ffff:9015:37fd
144.21.55.254 0:0:0:0:0:ffff:9015:37fe
144.21.55.255 0:0:0:0:0:ffff:9015:37ff


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.