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CIDR Range

216.56.4.0/23

512 IPs /23 WiscNet AS2381 United States ARIN
Addresses
512
512
IP Range
216.56.4.0
→ 216.56.5.255
Sub-ranges
4+
within this block
PTR Density
47.7%
244 of 512 IPs have PTR

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

76/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 216.56.4.0/23

CIDRIPsOrganizationASNCountry
216.56.4.0/24 256 WiscNet AS2381 US
216.56.5.0/24 256 WiscNet AS2381 US
216.56.5.0/25 128 WiscNet AS2381 US
216.56.5.128/25 128 WiscNet AS2381 US

Geolocation

First 256 of 512 IP addresses in 216.56.4.0/23

216.56.4.0 216.56.4.1 216.56.4.2 216.56.4.3 216.56.4.4 216.56.4.5 216.56.4.6 216.56.4.7 216.56.4.8 216.56.4.9 216.56.4.10 216.56.4.11 216.56.4.12 216.56.4.13 216.56.4.14 216.56.4.15 216.56.4.16 216.56.4.17 216.56.4.18 216.56.4.19 216.56.4.20 216.56.4.21 216.56.4.22 216.56.4.23 216.56.4.24 216.56.4.25 216.56.4.26 216.56.4.27 216.56.4.28 216.56.4.29 216.56.4.30 216.56.4.31 216.56.4.32 216.56.4.33 216.56.4.34 216.56.4.35 216.56.4.36 216.56.4.37 216.56.4.38 216.56.4.39 216.56.4.40 216.56.4.41 216.56.4.42 216.56.4.43 216.56.4.44 216.56.4.45 216.56.4.46 216.56.4.47 216.56.4.48 216.56.4.49 216.56.4.50 216.56.4.51 216.56.4.52 216.56.4.53 216.56.4.54 216.56.4.55 216.56.4.56 216.56.4.57 216.56.4.58 216.56.4.59 216.56.4.60 216.56.4.61 216.56.4.62 216.56.4.63 216.56.4.64 216.56.4.65 216.56.4.66 216.56.4.67 216.56.4.68 216.56.4.69 216.56.4.70 216.56.4.71 216.56.4.72 216.56.4.73 216.56.4.74 216.56.4.75 216.56.4.76 216.56.4.77 216.56.4.78 216.56.4.79 216.56.4.80 216.56.4.81 216.56.4.82 216.56.4.83 216.56.4.84 216.56.4.85 216.56.4.86 216.56.4.87 216.56.4.88 216.56.4.89 216.56.4.90 216.56.4.91 216.56.4.92 216.56.4.93 216.56.4.94 216.56.4.95 216.56.4.96 216.56.4.97 216.56.4.98 216.56.4.99 216.56.4.100 216.56.4.101 216.56.4.102 216.56.4.103 216.56.4.104 216.56.4.105 216.56.4.106 216.56.4.107 216.56.4.108 216.56.4.109 216.56.4.110 216.56.4.111 216.56.4.112 216.56.4.113 216.56.4.114 216.56.4.115 216.56.4.116 216.56.4.117 216.56.4.118 216.56.4.119 216.56.4.120 216.56.4.121 216.56.4.122 216.56.4.123 216.56.4.124 216.56.4.125 216.56.4.126 216.56.4.127 216.56.4.128 216.56.4.129 216.56.4.130 216.56.4.131 216.56.4.132 216.56.4.133 216.56.4.134 216.56.4.135 216.56.4.136 216.56.4.137 216.56.4.138 216.56.4.139 216.56.4.140 216.56.4.141 216.56.4.142 216.56.4.143 216.56.4.144 216.56.4.145 216.56.4.146 216.56.4.147 216.56.4.148 216.56.4.149 216.56.4.150 216.56.4.151 216.56.4.152 216.56.4.153 216.56.4.154 216.56.4.155 216.56.4.156 216.56.4.157 216.56.4.158 216.56.4.159 216.56.4.160 216.56.4.161 216.56.4.162 216.56.4.163 216.56.4.164 216.56.4.165 216.56.4.166 216.56.4.167 216.56.4.168 216.56.4.169 216.56.4.170 216.56.4.171 216.56.4.172 216.56.4.173 216.56.4.174 216.56.4.175 216.56.4.176 216.56.4.177 216.56.4.178 216.56.4.179 216.56.4.180 216.56.4.181 216.56.4.182 216.56.4.183 216.56.4.184 216.56.4.185 216.56.4.186 216.56.4.187 216.56.4.188 216.56.4.189 216.56.4.190 216.56.4.191 216.56.4.192 216.56.4.193 216.56.4.194 216.56.4.195 216.56.4.196 216.56.4.197 216.56.4.198 216.56.4.199 216.56.4.200 216.56.4.201 216.56.4.202 216.56.4.203 216.56.4.204 216.56.4.205 216.56.4.206 216.56.4.207 216.56.4.208 216.56.4.209 216.56.4.210 216.56.4.211 216.56.4.212 216.56.4.213 216.56.4.214 216.56.4.215 216.56.4.216 216.56.4.217 216.56.4.218 216.56.4.219 216.56.4.220 216.56.4.221 216.56.4.222 216.56.4.223 216.56.4.224 216.56.4.225 216.56.4.226 216.56.4.227 216.56.4.228 216.56.4.229 216.56.4.230 216.56.4.231 216.56.4.232 216.56.4.233 216.56.4.234 216.56.4.235 216.56.4.236 216.56.4.237 216.56.4.238 216.56.4.239 216.56.4.240 216.56.4.241 216.56.4.242 216.56.4.243 216.56.4.244 216.56.4.245 216.56.4.246 216.56.4.247 216.56.4.248 216.56.4.249 216.56.4.250 216.56.4.251 216.56.4.252 216.56.4.253 216.56.4.254 216.56.4.255 + 256 more (range too large to list inline)

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 216.56.0.0/16.

Announced prefix
216.56.0.0/16
Origin AS
AS2381
Announcement samples
4,413
Last seen
2026-07-23 23:08:26

Frequently Asked Questions

What is 216.56.4.0/23?

216.56.4.0/23 is a CIDR network block containing 512 IPv4 addresses (from 216.56.4.0 to 216.56.5.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 216.56.4.0/23 network?

The 216.56.4.0/23 range is allocated to WiscNet and announced via AS2381 from United States.

Last updated: 2026-07-23 23:10:33 UTC
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