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
85.21.55.1 0:0:0:0:0:ffff:5515:3701
85.21.55.2 0:0:0:0:0:ffff:5515:3702
85.21.55.3 0:0:0:0:0:ffff:5515:3703
85.21.55.4 0:0:0:0:0:ffff:5515:3704
85.21.55.5 0:0:0:0:0:ffff:5515:3705
85.21.55.6 0:0:0:0:0:ffff:5515:3706
85.21.55.7 0:0:0:0:0:ffff:5515:3707
85.21.55.8 0:0:0:0:0:ffff:5515:3708
85.21.55.9 0:0:0:0:0:ffff:5515:3709
85.21.55.10 0:0:0:0:0:ffff:5515:370a
85.21.55.11 0:0:0:0:0:ffff:5515:370b
85.21.55.12 0:0:0:0:0:ffff:5515:370c
85.21.55.13 0:0:0:0:0:ffff:5515:370d
85.21.55.14 0:0:0:0:0:ffff:5515:370e
85.21.55.15 0:0:0:0:0:ffff:5515:370f
85.21.55.16 0:0:0:0:0:ffff:5515:3710
85.21.55.17 0:0:0:0:0:ffff:5515:3711
85.21.55.18 0:0:0:0:0:ffff:5515:3712
85.21.55.19 0:0:0:0:0:ffff:5515:3713
85.21.55.20 0:0:0:0:0:ffff:5515:3714
85.21.55.21 0:0:0:0:0:ffff:5515:3715
85.21.55.22 0:0:0:0:0:ffff:5515:3716
85.21.55.23 0:0:0:0:0:ffff:5515:3717
85.21.55.24 0:0:0:0:0:ffff:5515:3718
85.21.55.25 0:0:0:0:0:ffff:5515:3719
85.21.55.26 0:0:0:0:0:ffff:5515:371a
85.21.55.27 0:0:0:0:0:ffff:5515:371b
85.21.55.28 0:0:0:0:0:ffff:5515:371c
85.21.55.29 0:0:0:0:0:ffff:5515:371d
85.21.55.30 0:0:0:0:0:ffff:5515:371e
85.21.55.31 0:0:0:0:0:ffff:5515:371f
85.21.55.32 0:0:0:0:0:ffff:5515:3720
85.21.55.33 0:0:0:0:0:ffff:5515:3721
85.21.55.34 0:0:0:0:0:ffff:5515:3722
85.21.55.35 0:0:0:0:0:ffff:5515:3723
85.21.55.36 0:0:0:0:0:ffff:5515:3724
85.21.55.37 0:0:0:0:0:ffff:5515:3725
85.21.55.38 0:0:0:0:0:ffff:5515:3726
85.21.55.39 0:0:0:0:0:ffff:5515:3727
85.21.55.40 0:0:0:0:0:ffff:5515:3728
85.21.55.41 0:0:0:0:0:ffff:5515:3729
85.21.55.42 0:0:0:0:0:ffff:5515:372a
85.21.55.43 0:0:0:0:0:ffff:5515:372b
85.21.55.44 0:0:0:0:0:ffff:5515:372c
85.21.55.45 0:0:0:0:0:ffff:5515:372d
85.21.55.46 0:0:0:0:0:ffff:5515:372e
85.21.55.47 0:0:0:0:0:ffff:5515:372f
85.21.55.48 0:0:0:0:0:ffff:5515:3730
85.21.55.49 0:0:0:0:0:ffff:5515:3731
85.21.55.50 0:0:0:0:0:ffff:5515:3732
85.21.55.51 0:0:0:0:0:ffff:5515:3733
85.21.55.52 0:0:0:0:0:ffff:5515:3734
85.21.55.53 0:0:0:0:0:ffff:5515:3735
85.21.55.54 0:0:0:0:0:ffff:5515:3736
85.21.55.55 0:0:0:0:0:ffff:5515:3737
85.21.55.56 0:0:0:0:0:ffff:5515:3738
85.21.55.57 0:0:0:0:0:ffff:5515:3739
85.21.55.58 0:0:0:0:0:ffff:5515:373a
85.21.55.59 0:0:0:0:0:ffff:5515:373b
85.21.55.60 0:0:0:0:0:ffff:5515:373c


85.21.55.61 0:0:0:0:0:ffff:5515:373d
85.21.55.62 0:0:0:0:0:ffff:5515:373e
85.21.55.63 0:0:0:0:0:ffff:5515:373f
85.21.55.64 0:0:0:0:0:ffff:5515:3740
85.21.55.65 0:0:0:0:0:ffff:5515:3741
85.21.55.66 0:0:0:0:0:ffff:5515:3742
85.21.55.67 0:0:0:0:0:ffff:5515:3743
85.21.55.68 0:0:0:0:0:ffff:5515:3744
85.21.55.69 0:0:0:0:0:ffff:5515:3745
85.21.55.70 0:0:0:0:0:ffff:5515:3746
85.21.55.71 0:0:0:0:0:ffff:5515:3747
85.21.55.72 0:0:0:0:0:ffff:5515:3748
85.21.55.73 0:0:0:0:0:ffff:5515:3749
85.21.55.74 0:0:0:0:0:ffff:5515:374a
85.21.55.75 0:0:0:0:0:ffff:5515:374b
85.21.55.76 0:0:0:0:0:ffff:5515:374c
85.21.55.77 0:0:0:0:0:ffff:5515:374d
85.21.55.78 0:0:0:0:0:ffff:5515:374e
85.21.55.79 0:0:0:0:0:ffff:5515:374f
85.21.55.80 0:0:0:0:0:ffff:5515:3750
85.21.55.81 0:0:0:0:0:ffff:5515:3751
85.21.55.82 0:0:0:0:0:ffff:5515:3752
85.21.55.83 0:0:0:0:0:ffff:5515:3753
85.21.55.84 0:0:0:0:0:ffff:5515:3754
85.21.55.85 0:0:0:0:0:ffff:5515:3755
85.21.55.86 0:0:0:0:0:ffff:5515:3756
85.21.55.87 0:0:0:0:0:ffff:5515:3757
85.21.55.88 0:0:0:0:0:ffff:5515:3758
85.21.55.89 0:0:0:0:0:ffff:5515:3759
85.21.55.90 0:0:0:0:0:ffff:5515:375a
85.21.55.91 0:0:0:0:0:ffff:5515:375b
85.21.55.92 0:0:0:0:0:ffff:5515:375c
85.21.55.93 0:0:0:0:0:ffff:5515:375d
85.21.55.94 0:0:0:0:0:ffff:5515:375e
85.21.55.95 0:0:0:0:0:ffff:5515:375f
85.21.55.96 0:0:0:0:0:ffff:5515:3760
85.21.55.97 0:0:0:0:0:ffff:5515:3761
85.21.55.98 0:0:0:0:0:ffff:5515:3762
85.21.55.99 0:0:0:0:0:ffff:5515:3763
85.21.55.100 0:0:0:0:0:ffff:5515:3764
85.21.55.101 0:0:0:0:0:ffff:5515:3765
85.21.55.102 0:0:0:0:0:ffff:5515:3766
85.21.55.103 0:0:0:0:0:ffff:5515:3767
85.21.55.104 0:0:0:0:0:ffff:5515:3768
85.21.55.105 0:0:0:0:0:ffff:5515:3769
85.21.55.106 0:0:0:0:0:ffff:5515:376a
85.21.55.107 0:0:0:0:0:ffff:5515:376b
85.21.55.108 0:0:0:0:0:ffff:5515:376c
85.21.55.109 0:0:0:0:0:ffff:5515:376d
85.21.55.110 0:0:0:0:0:ffff:5515:376e
85.21.55.111 0:0:0:0:0:ffff:5515:376f
85.21.55.112 0:0:0:0:0:ffff:5515:3770
85.21.55.113 0:0:0:0:0:ffff:5515:3771
85.21.55.114 0:0:0:0:0:ffff:5515:3772
85.21.55.115 0:0:0:0:0:ffff:5515:3773
85.21.55.116 0:0:0:0:0:ffff:5515:3774
85.21.55.117 0:0:0:0:0:ffff:5515:3775
85.21.55.118 0:0:0:0:0:ffff:5515:3776
85.21.55.119 0:0:0:0:0:ffff:5515:3777
85.21.55.120 0:0:0:0:0:ffff:5515:3778


85.21.55.121 0:0:0:0:0:ffff:5515:3779
85.21.55.122 0:0:0:0:0:ffff:5515:377a
85.21.55.123 0:0:0:0:0:ffff:5515:377b
85.21.55.124 0:0:0:0:0:ffff:5515:377c
85.21.55.125 0:0:0:0:0:ffff:5515:377d
85.21.55.126 0:0:0:0:0:ffff:5515:377e
85.21.55.127 0:0:0:0:0:ffff:5515:377f
85.21.55.128 0:0:0:0:0:ffff:5515:3780
85.21.55.129 0:0:0:0:0:ffff:5515:3781
85.21.55.130 0:0:0:0:0:ffff:5515:3782
85.21.55.131 0:0:0:0:0:ffff:5515:3783
85.21.55.132 0:0:0:0:0:ffff:5515:3784
85.21.55.133 0:0:0:0:0:ffff:5515:3785
85.21.55.134 0:0:0:0:0:ffff:5515:3786
85.21.55.135 0:0:0:0:0:ffff:5515:3787
85.21.55.136 0:0:0:0:0:ffff:5515:3788
85.21.55.137 0:0:0:0:0:ffff:5515:3789
85.21.55.138 0:0:0:0:0:ffff:5515:378a
85.21.55.139 0:0:0:0:0:ffff:5515:378b
85.21.55.140 0:0:0:0:0:ffff:5515:378c
85.21.55.141 0:0:0:0:0:ffff:5515:378d
85.21.55.142 0:0:0:0:0:ffff:5515:378e
85.21.55.143 0:0:0:0:0:ffff:5515:378f
85.21.55.144 0:0:0:0:0:ffff:5515:3790
85.21.55.145 0:0:0:0:0:ffff:5515:3791
85.21.55.146 0:0:0:0:0:ffff:5515:3792
85.21.55.147 0:0:0:0:0:ffff:5515:3793
85.21.55.148 0:0:0:0:0:ffff:5515:3794
85.21.55.149 0:0:0:0:0:ffff:5515:3795
85.21.55.150 0:0:0:0:0:ffff:5515:3796
85.21.55.151 0:0:0:0:0:ffff:5515:3797
85.21.55.152 0:0:0:0:0:ffff:5515:3798
85.21.55.153 0:0:0:0:0:ffff:5515:3799
85.21.55.154 0:0:0:0:0:ffff:5515:379a
85.21.55.155 0:0:0:0:0:ffff:5515:379b
85.21.55.156 0:0:0:0:0:ffff:5515:379c
85.21.55.157 0:0:0:0:0:ffff:5515:379d
85.21.55.158 0:0:0:0:0:ffff:5515:379e
85.21.55.159 0:0:0:0:0:ffff:5515:379f
85.21.55.160 0:0:0:0:0:ffff:5515:37a0
85.21.55.161 0:0:0:0:0:ffff:5515:37a1
85.21.55.162 0:0:0:0:0:ffff:5515:37a2
85.21.55.163 0:0:0:0:0:ffff:5515:37a3
85.21.55.164 0:0:0:0:0:ffff:5515:37a4
85.21.55.165 0:0:0:0:0:ffff:5515:37a5
85.21.55.166 0:0:0:0:0:ffff:5515:37a6
85.21.55.167 0:0:0:0:0:ffff:5515:37a7
85.21.55.168 0:0:0:0:0:ffff:5515:37a8
85.21.55.169 0:0:0:0:0:ffff:5515:37a9
85.21.55.170 0:0:0:0:0:ffff:5515:37aa
85.21.55.171 0:0:0:0:0:ffff:5515:37ab
85.21.55.172 0:0:0:0:0:ffff:5515:37ac
85.21.55.173 0:0:0:0:0:ffff:5515:37ad
85.21.55.174 0:0:0:0:0:ffff:5515:37ae
85.21.55.175 0:0:0:0:0:ffff:5515:37af
85.21.55.176 0:0:0:0:0:ffff:5515:37b0
85.21.55.177 0:0:0:0:0:ffff:5515:37b1
85.21.55.178 0:0:0:0:0:ffff:5515:37b2
85.21.55.179 0:0:0:0:0:ffff:5515:37b3
85.21.55.180 0:0:0:0:0:ffff:5515:37b4


85.21.55.181 0:0:0:0:0:ffff:5515:37b5
85.21.55.182 0:0:0:0:0:ffff:5515:37b6
85.21.55.183 0:0:0:0:0:ffff:5515:37b7
85.21.55.184 0:0:0:0:0:ffff:5515:37b8
85.21.55.185 0:0:0:0:0:ffff:5515:37b9
85.21.55.186 0:0:0:0:0:ffff:5515:37ba
85.21.55.187 0:0:0:0:0:ffff:5515:37bb
85.21.55.188 0:0:0:0:0:ffff:5515:37bc
85.21.55.189 0:0:0:0:0:ffff:5515:37bd
85.21.55.190 0:0:0:0:0:ffff:5515:37be
85.21.55.191 0:0:0:0:0:ffff:5515:37bf
85.21.55.192 0:0:0:0:0:ffff:5515:37c0
85.21.55.193 0:0:0:0:0:ffff:5515:37c1
85.21.55.194 0:0:0:0:0:ffff:5515:37c2
85.21.55.195 0:0:0:0:0:ffff:5515:37c3
85.21.55.196 0:0:0:0:0:ffff:5515:37c4
85.21.55.197 0:0:0:0:0:ffff:5515:37c5
85.21.55.198 0:0:0:0:0:ffff:5515:37c6
85.21.55.199 0:0:0:0:0:ffff:5515:37c7
85.21.55.200 0:0:0:0:0:ffff:5515:37c8
85.21.55.201 0:0:0:0:0:ffff:5515:37c9
85.21.55.202 0:0:0:0:0:ffff:5515:37ca
85.21.55.203 0:0:0:0:0:ffff:5515:37cb
85.21.55.204 0:0:0:0:0:ffff:5515:37cc
85.21.55.205 0:0:0:0:0:ffff:5515:37cd
85.21.55.206 0:0:0:0:0:ffff:5515:37ce
85.21.55.207 0:0:0:0:0:ffff:5515:37cf
85.21.55.208 0:0:0:0:0:ffff:5515:37d0
85.21.55.209 0:0:0:0:0:ffff:5515:37d1
85.21.55.210 0:0:0:0:0:ffff:5515:37d2
85.21.55.211 0:0:0:0:0:ffff:5515:37d3
85.21.55.212 0:0:0:0:0:ffff:5515:37d4
85.21.55.213 0:0:0:0:0:ffff:5515:37d5
85.21.55.214 0:0:0:0:0:ffff:5515:37d6
85.21.55.215 0:0:0:0:0:ffff:5515:37d7
85.21.55.216 0:0:0:0:0:ffff:5515:37d8
85.21.55.217 0:0:0:0:0:ffff:5515:37d9
85.21.55.218 0:0:0:0:0:ffff:5515:37da
85.21.55.219 0:0:0:0:0:ffff:5515:37db
85.21.55.220 0:0:0:0:0:ffff:5515:37dc
85.21.55.221 0:0:0:0:0:ffff:5515:37dd
85.21.55.222 0:0:0:0:0:ffff:5515:37de
85.21.55.223 0:0:0:0:0:ffff:5515:37df
85.21.55.224 0:0:0:0:0:ffff:5515:37e0
85.21.55.225 0:0:0:0:0:ffff:5515:37e1
85.21.55.226 0:0:0:0:0:ffff:5515:37e2
85.21.55.227 0:0:0:0:0:ffff:5515:37e3
85.21.55.228 0:0:0:0:0:ffff:5515:37e4
85.21.55.229 0:0:0:0:0:ffff:5515:37e5
85.21.55.230 0:0:0:0:0:ffff:5515:37e6
85.21.55.231 0:0:0:0:0:ffff:5515:37e7
85.21.55.232 0:0:0:0:0:ffff:5515:37e8
85.21.55.233 0:0:0:0:0:ffff:5515:37e9
85.21.55.234 0:0:0:0:0:ffff:5515:37ea
85.21.55.235 0:0:0:0:0:ffff:5515:37eb
85.21.55.236 0:0:0:0:0:ffff:5515:37ec
85.21.55.237 0:0:0:0:0:ffff:5515:37ed
85.21.55.238 0:0:0:0:0:ffff:5515:37ee
85.21.55.239 0:0:0:0:0:ffff:5515:37ef
85.21.55.240 0:0:0:0:0:ffff:5515:37f0
85.21.55.241 0:0:0:0:0:ffff:5515:37f1
85.21.55.242 0:0:0:0:0:ffff:5515:37f2
85.21.55.243 0:0:0:0:0:ffff:5515:37f3
85.21.55.244 0:0:0:0:0:ffff:5515:37f4
85.21.55.245 0:0:0:0:0:ffff:5515:37f5
85.21.55.246 0:0:0:0:0:ffff:5515:37f6
85.21.55.247 0:0:0:0:0:ffff:5515:37f7
85.21.55.248 0:0:0:0:0:ffff:5515:37f8
85.21.55.249 0:0:0:0:0:ffff:5515:37f9
85.21.55.250 0:0:0:0:0:ffff:5515:37fa
85.21.55.251 0:0:0:0:0:ffff:5515:37fb
85.21.55.252 0:0:0:0:0:ffff:5515:37fc
85.21.55.253 0:0:0:0:0:ffff:5515:37fd
85.21.55.254 0:0:0:0:0:ffff:5515:37fe
85.21.55.255 0:0:0:0:0:ffff:5515:37ff


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.