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CIDR Range

180.131.216.0/21

2.0K IPs /21 GLBB Japan KK AS55900 Japan APNIC
Addresses
2,048
2.0K
IP Range
180.131.216.0
→ 180.131.223.255
Sub-ranges
7+
within this block
PTR Density
98.4%
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.

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 180.131.216.0/21

CIDRIPsOrganizationASNCountry
180.131.216.0/22 1.0K GLBB Japan KK AS55900 JP
180.131.220.0/23 512 GLBB Japan KK AS55900 JP
180.131.223.0/24 256 GLBB Japan KK AS55900 JP
180.131.222.0/25 128 GLBB Japan KK AS55900 JP
180.131.222.128/26 64 GLBB Japan KK AS55900 JP
180.131.222.192/27 32 GLBB Japan KK AS55900 JP
180.131.222.224/27 32 GLBB Japan KK AS55900 JP

First 256 of 2,048 IP addresses in 180.131.216.0/21

180.131.216.0 180.131.216.1 180.131.216.2 180.131.216.3 180.131.216.4 180.131.216.5 180.131.216.6 180.131.216.7 180.131.216.8 180.131.216.9 180.131.216.10 180.131.216.11 180.131.216.12 180.131.216.13 180.131.216.14 180.131.216.15 180.131.216.16 180.131.216.17 180.131.216.18 180.131.216.19 180.131.216.20 180.131.216.21 180.131.216.22 180.131.216.23 180.131.216.24 180.131.216.25 180.131.216.26 180.131.216.27 180.131.216.28 180.131.216.29 180.131.216.30 180.131.216.31 180.131.216.32 180.131.216.33 180.131.216.34 180.131.216.35 180.131.216.36 180.131.216.37 180.131.216.38 180.131.216.39 180.131.216.40 180.131.216.41 180.131.216.42 180.131.216.43 180.131.216.44 180.131.216.45 180.131.216.46 180.131.216.47 180.131.216.48 180.131.216.49 180.131.216.50 180.131.216.51 180.131.216.52 180.131.216.53 180.131.216.54 180.131.216.55 180.131.216.56 180.131.216.57 180.131.216.58 180.131.216.59 180.131.216.60 180.131.216.61 180.131.216.62 180.131.216.63 180.131.216.64 180.131.216.65 180.131.216.66 180.131.216.67 180.131.216.68 180.131.216.69 180.131.216.70 180.131.216.71 180.131.216.72 180.131.216.73 180.131.216.74 180.131.216.75 180.131.216.76 180.131.216.77 180.131.216.78 180.131.216.79 180.131.216.80 180.131.216.81 180.131.216.82 180.131.216.83 180.131.216.84 180.131.216.85 180.131.216.86 180.131.216.87 180.131.216.88 180.131.216.89 180.131.216.90 180.131.216.91 180.131.216.92 180.131.216.93 180.131.216.94 180.131.216.95 180.131.216.96 180.131.216.97 180.131.216.98 180.131.216.99 180.131.216.100 180.131.216.101 180.131.216.102 180.131.216.103 180.131.216.104 180.131.216.105 180.131.216.106 180.131.216.107 180.131.216.108 180.131.216.109 180.131.216.110 180.131.216.111 180.131.216.112 180.131.216.113 180.131.216.114 180.131.216.115 180.131.216.116 180.131.216.117 180.131.216.118 180.131.216.119 180.131.216.120 180.131.216.121 180.131.216.122 180.131.216.123 180.131.216.124 180.131.216.125 180.131.216.126 180.131.216.127 180.131.216.128 180.131.216.129 180.131.216.130 180.131.216.131 180.131.216.132 180.131.216.133 180.131.216.134 180.131.216.135 180.131.216.136 180.131.216.137 180.131.216.138 180.131.216.139 180.131.216.140 180.131.216.141 180.131.216.142 180.131.216.143 180.131.216.144 180.131.216.145 180.131.216.146 180.131.216.147 180.131.216.148 180.131.216.149 180.131.216.150 180.131.216.151 180.131.216.152 180.131.216.153 180.131.216.154 180.131.216.155 180.131.216.156 180.131.216.157 180.131.216.158 180.131.216.159 180.131.216.160 180.131.216.161 180.131.216.162 180.131.216.163 180.131.216.164 180.131.216.165 180.131.216.166 180.131.216.167 180.131.216.168 180.131.216.169 180.131.216.170 180.131.216.171 180.131.216.172 180.131.216.173 180.131.216.174 180.131.216.175 180.131.216.176 180.131.216.177 180.131.216.178 180.131.216.179 180.131.216.180 180.131.216.181 180.131.216.182 180.131.216.183 180.131.216.184 180.131.216.185 180.131.216.186 180.131.216.187 180.131.216.188 180.131.216.189 180.131.216.190 180.131.216.191 180.131.216.192 180.131.216.193 180.131.216.194 180.131.216.195 180.131.216.196 180.131.216.197 180.131.216.198 180.131.216.199 180.131.216.200 180.131.216.201 180.131.216.202 180.131.216.203 180.131.216.204 180.131.216.205 180.131.216.206 180.131.216.207 180.131.216.208 180.131.216.209 180.131.216.210 180.131.216.211 180.131.216.212 180.131.216.213 180.131.216.214 180.131.216.215 180.131.216.216 180.131.216.217 180.131.216.218 180.131.216.219 180.131.216.220 180.131.216.221 180.131.216.222 180.131.216.223 180.131.216.224 180.131.216.225 180.131.216.226 180.131.216.227 180.131.216.228 180.131.216.229 180.131.216.230 180.131.216.231 180.131.216.232 180.131.216.233 180.131.216.234 180.131.216.235 180.131.216.236 180.131.216.237 180.131.216.238 180.131.216.239 180.131.216.240 180.131.216.241 180.131.216.242 180.131.216.243 180.131.216.244 180.131.216.245 180.131.216.246 180.131.216.247 180.131.216.248 180.131.216.249 180.131.216.250 180.131.216.251 180.131.216.252 180.131.216.253 180.131.216.254 180.131.216.255 + 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 180.131.208.0/20.

Announced prefix
180.131.208.0/20
Origin AS
AS55900
Announcement samples
3,835
Last seen
2026-07-24 16:00:45

Frequently Asked Questions

What is 180.131.216.0/21?

180.131.216.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 180.131.216.0 to 180.131.223.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 180.131.216.0/21 network?

The 180.131.216.0/21 range is allocated to GLBB Japan KK and announced via AS55900 from Japan.

Last updated: 2026-07-24 18:55:31 UTC
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