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CIDR Range

167.237.104.0/21

2.0K IPs /21 TDS TELECOM AS4181 United States ARIN
Addresses
2,048
2.0K
IP Range
167.237.104.0
→ 167.237.111.255
Sub-ranges
0+
within this block
PTR Density
100.0%
2.0K of 2.0K 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.

70/100
Moderate
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Geolocation

First 256 of 2,048 IP addresses in 167.237.104.0/21

167.237.104.0 167.237.104.1 167.237.104.2 167.237.104.3 167.237.104.4 167.237.104.5 167.237.104.6 167.237.104.7 167.237.104.8 167.237.104.9 167.237.104.10 167.237.104.11 167.237.104.12 167.237.104.13 167.237.104.14 167.237.104.15 167.237.104.16 167.237.104.17 167.237.104.18 167.237.104.19 167.237.104.20 167.237.104.21 167.237.104.22 167.237.104.23 167.237.104.24 167.237.104.25 167.237.104.26 167.237.104.27 167.237.104.28 167.237.104.29 167.237.104.30 167.237.104.31 167.237.104.32 167.237.104.33 167.237.104.34 167.237.104.35 167.237.104.36 167.237.104.37 167.237.104.38 167.237.104.39 167.237.104.40 167.237.104.41 167.237.104.42 167.237.104.43 167.237.104.44 167.237.104.45 167.237.104.46 167.237.104.47 167.237.104.48 167.237.104.49 167.237.104.50 167.237.104.51 167.237.104.52 167.237.104.53 167.237.104.54 167.237.104.55 167.237.104.56 167.237.104.57 167.237.104.58 167.237.104.59 167.237.104.60 167.237.104.61 167.237.104.62 167.237.104.63 167.237.104.64 167.237.104.65 167.237.104.66 167.237.104.67 167.237.104.68 167.237.104.69 167.237.104.70 167.237.104.71 167.237.104.72 167.237.104.73 167.237.104.74 167.237.104.75 167.237.104.76 167.237.104.77 167.237.104.78 167.237.104.79 167.237.104.80 167.237.104.81 167.237.104.82 167.237.104.83 167.237.104.84 167.237.104.85 167.237.104.86 167.237.104.87 167.237.104.88 167.237.104.89 167.237.104.90 167.237.104.91 167.237.104.92 167.237.104.93 167.237.104.94 167.237.104.95 167.237.104.96 167.237.104.97 167.237.104.98 167.237.104.99 167.237.104.100 167.237.104.101 167.237.104.102 167.237.104.103 167.237.104.104 167.237.104.105 167.237.104.106 167.237.104.107 167.237.104.108 167.237.104.109 167.237.104.110 167.237.104.111 167.237.104.112 167.237.104.113 167.237.104.114 167.237.104.115 167.237.104.116 167.237.104.117 167.237.104.118 167.237.104.119 167.237.104.120 167.237.104.121 167.237.104.122 167.237.104.123 167.237.104.124 167.237.104.125 167.237.104.126 167.237.104.127 167.237.104.128 167.237.104.129 167.237.104.130 167.237.104.131 167.237.104.132 167.237.104.133 167.237.104.134 167.237.104.135 167.237.104.136 167.237.104.137 167.237.104.138 167.237.104.139 167.237.104.140 167.237.104.141 167.237.104.142 167.237.104.143 167.237.104.144 167.237.104.145 167.237.104.146 167.237.104.147 167.237.104.148 167.237.104.149 167.237.104.150 167.237.104.151 167.237.104.152 167.237.104.153 167.237.104.154 167.237.104.155 167.237.104.156 167.237.104.157 167.237.104.158 167.237.104.159 167.237.104.160 167.237.104.161 167.237.104.162 167.237.104.163 167.237.104.164 167.237.104.165 167.237.104.166 167.237.104.167 167.237.104.168 167.237.104.169 167.237.104.170 167.237.104.171 167.237.104.172 167.237.104.173 167.237.104.174 167.237.104.175 167.237.104.176 167.237.104.177 167.237.104.178 167.237.104.179 167.237.104.180 167.237.104.181 167.237.104.182 167.237.104.183 167.237.104.184 167.237.104.185 167.237.104.186 167.237.104.187 167.237.104.188 167.237.104.189 167.237.104.190 167.237.104.191 167.237.104.192 167.237.104.193 167.237.104.194 167.237.104.195 167.237.104.196 167.237.104.197 167.237.104.198 167.237.104.199 167.237.104.200 167.237.104.201 167.237.104.202 167.237.104.203 167.237.104.204 167.237.104.205 167.237.104.206 167.237.104.207 167.237.104.208 167.237.104.209 167.237.104.210 167.237.104.211 167.237.104.212 167.237.104.213 167.237.104.214 167.237.104.215 167.237.104.216 167.237.104.217 167.237.104.218 167.237.104.219 167.237.104.220 167.237.104.221 167.237.104.222 167.237.104.223 167.237.104.224 167.237.104.225 167.237.104.226 167.237.104.227 167.237.104.228 167.237.104.229 167.237.104.230 167.237.104.231 167.237.104.232 167.237.104.233 167.237.104.234 167.237.104.235 167.237.104.236 167.237.104.237 167.237.104.238 167.237.104.239 167.237.104.240 167.237.104.241 167.237.104.242 167.237.104.243 167.237.104.244 167.237.104.245 167.237.104.246 167.237.104.247 167.237.104.248 167.237.104.249 167.237.104.250 167.237.104.251 167.237.104.252 167.237.104.253 167.237.104.254 167.237.104.255 + 1.8K more (range too large to list inline)

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 167.237.0.0/16.

Announced prefix
167.237.0.0/16
Origin AS
AS4181
Announcement samples
5,105
Last seen
2026-07-19 07:10:28

Frequently Asked Questions

What is 167.237.104.0/21?

167.237.104.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 167.237.104.0 to 167.237.111.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 167.237.104.0/21 network?

The 167.237.104.0/21 range is allocated to TDS TELECOM and announced via AS4181 from United States.

Last updated: 2026-07-19 07:40:31 UTC
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