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CIDR Range

218.40.184.0/21

2.0K IPs /21 Okinawa Telecommunication Network Co.,Inc AS9621 Japan APNIC
Addresses
2,048
2.0K
IP Range
218.40.184.0
→ 218.40.191.255
Sub-ranges
3+
within this block
PTR Density
74.6%
1.5K 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.

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 218.40.184.0/21

CIDRIPsOrganizationASNCountry
218.40.188.0/22 1.0K Okinawa Telecommunication Network Co.,Inc AS9621 JP
218.40.184.0/23 512 Okinawa Telecommunication Network Co.,Inc AS9621 JP
218.40.186.0/23 512 Okinawa Telecommunication Network Co.,Inc AS9621 JP

Geolocation

First 256 of 2,048 IP addresses in 218.40.184.0/21

218.40.184.0 218.40.184.1 218.40.184.2 218.40.184.3 218.40.184.4 218.40.184.5 218.40.184.6 218.40.184.7 218.40.184.8 218.40.184.9 218.40.184.10 218.40.184.11 218.40.184.12 218.40.184.13 218.40.184.14 218.40.184.15 218.40.184.16 218.40.184.17 218.40.184.18 218.40.184.19 218.40.184.20 218.40.184.21 218.40.184.22 218.40.184.23 218.40.184.24 218.40.184.25 218.40.184.26 218.40.184.27 218.40.184.28 218.40.184.29 218.40.184.30 218.40.184.31 218.40.184.32 218.40.184.33 218.40.184.34 218.40.184.35 218.40.184.36 218.40.184.37 218.40.184.38 218.40.184.39 218.40.184.40 218.40.184.41 218.40.184.42 218.40.184.43 218.40.184.44 218.40.184.45 218.40.184.46 218.40.184.47 218.40.184.48 218.40.184.49 218.40.184.50 218.40.184.51 218.40.184.52 218.40.184.53 218.40.184.54 218.40.184.55 218.40.184.56 218.40.184.57 218.40.184.58 218.40.184.59 218.40.184.60 218.40.184.61 218.40.184.62 218.40.184.63 218.40.184.64 218.40.184.65 218.40.184.66 218.40.184.67 218.40.184.68 218.40.184.69 218.40.184.70 218.40.184.71 218.40.184.72 218.40.184.73 218.40.184.74 218.40.184.75 218.40.184.76 218.40.184.77 218.40.184.78 218.40.184.79 218.40.184.80 218.40.184.81 218.40.184.82 218.40.184.83 218.40.184.84 218.40.184.85 218.40.184.86 218.40.184.87 218.40.184.88 218.40.184.89 218.40.184.90 218.40.184.91 218.40.184.92 218.40.184.93 218.40.184.94 218.40.184.95 218.40.184.96 218.40.184.97 218.40.184.98 218.40.184.99 218.40.184.100 218.40.184.101 218.40.184.102 218.40.184.103 218.40.184.104 218.40.184.105 218.40.184.106 218.40.184.107 218.40.184.108 218.40.184.109 218.40.184.110 218.40.184.111 218.40.184.112 218.40.184.113 218.40.184.114 218.40.184.115 218.40.184.116 218.40.184.117 218.40.184.118 218.40.184.119 218.40.184.120 218.40.184.121 218.40.184.122 218.40.184.123 218.40.184.124 218.40.184.125 218.40.184.126 218.40.184.127 218.40.184.128 218.40.184.129 218.40.184.130 218.40.184.131 218.40.184.132 218.40.184.133 218.40.184.134 218.40.184.135 218.40.184.136 218.40.184.137 218.40.184.138 218.40.184.139 218.40.184.140 218.40.184.141 218.40.184.142 218.40.184.143 218.40.184.144 218.40.184.145 218.40.184.146 218.40.184.147 218.40.184.148 218.40.184.149 218.40.184.150 218.40.184.151 218.40.184.152 218.40.184.153 218.40.184.154 218.40.184.155 218.40.184.156 218.40.184.157 218.40.184.158 218.40.184.159 218.40.184.160 218.40.184.161 218.40.184.162 218.40.184.163 218.40.184.164 218.40.184.165 218.40.184.166 218.40.184.167 218.40.184.168 218.40.184.169 218.40.184.170 218.40.184.171 218.40.184.172 218.40.184.173 218.40.184.174 218.40.184.175 218.40.184.176 218.40.184.177 218.40.184.178 218.40.184.179 218.40.184.180 218.40.184.181 218.40.184.182 218.40.184.183 218.40.184.184 218.40.184.185 218.40.184.186 218.40.184.187 218.40.184.188 218.40.184.189 218.40.184.190 218.40.184.191 218.40.184.192 218.40.184.193 218.40.184.194 218.40.184.195 218.40.184.196 218.40.184.197 218.40.184.198 218.40.184.199 218.40.184.200 218.40.184.201 218.40.184.202 218.40.184.203 218.40.184.204 218.40.184.205 218.40.184.206 218.40.184.207 218.40.184.208 218.40.184.209 218.40.184.210 218.40.184.211 218.40.184.212 218.40.184.213 218.40.184.214 218.40.184.215 218.40.184.216 218.40.184.217 218.40.184.218 218.40.184.219 218.40.184.220 218.40.184.221 218.40.184.222 218.40.184.223 218.40.184.224 218.40.184.225 218.40.184.226 218.40.184.227 218.40.184.228 218.40.184.229 218.40.184.230 218.40.184.231 218.40.184.232 218.40.184.233 218.40.184.234 218.40.184.235 218.40.184.236 218.40.184.237 218.40.184.238 218.40.184.239 218.40.184.240 218.40.184.241 218.40.184.242 218.40.184.243 218.40.184.244 218.40.184.245 218.40.184.246 218.40.184.247 218.40.184.248 218.40.184.249 218.40.184.250 218.40.184.251 218.40.184.252 218.40.184.253 218.40.184.254 218.40.184.255 + 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 218.40.160.0/19.

Announced prefix
218.40.160.0/19
Origin AS
AS9621
Announcement samples
6,294
Last seen
2026-07-27 15:55:40

Frequently Asked Questions

What is 218.40.184.0/21?

218.40.184.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 218.40.184.0 to 218.40.191.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 218.40.184.0/21 network?

The 218.40.184.0/21 range is allocated to Okinawa Telecommunication Network Co.,Inc and announced via AS9621 from Japan.

Last updated: 2026-07-27 16:10:34 UTC
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