132.131.48.0/21 CIDR Lookup — 2.0K IPs Owned…

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.

79/100

Moderate

How this score is built

Baseline (neutral) 65
Government allocation +8
Long-established allocation (36y) +6
Trust score 79 / 100

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 132.131.48.0/21

132.131.48.0 132.131.48.1 132.131.48.2 132.131.48.3 132.131.48.4 132.131.48.5 132.131.48.6 132.131.48.7 132.131.48.8 132.131.48.9 132.131.48.10 132.131.48.11 132.131.48.12 132.131.48.13 132.131.48.14 132.131.48.15 132.131.48.16 132.131.48.17 132.131.48.18 132.131.48.19 132.131.48.20 132.131.48.21 132.131.48.22 132.131.48.23 132.131.48.24 132.131.48.25 132.131.48.26 132.131.48.27 132.131.48.28 132.131.48.29 132.131.48.30 132.131.48.31 132.131.48.32 132.131.48.33 132.131.48.34 132.131.48.35 132.131.48.36 132.131.48.37 132.131.48.38 132.131.48.39 132.131.48.40 132.131.48.41 132.131.48.42 132.131.48.43 132.131.48.44 132.131.48.45 132.131.48.46 132.131.48.47 132.131.48.48 132.131.48.49 132.131.48.50 132.131.48.51 132.131.48.52 132.131.48.53 132.131.48.54 132.131.48.55 132.131.48.56 132.131.48.57 132.131.48.58 132.131.48.59 132.131.48.60 132.131.48.61 132.131.48.62 132.131.48.63 132.131.48.64 132.131.48.65 132.131.48.66 132.131.48.67 132.131.48.68 132.131.48.69 132.131.48.70 132.131.48.71 132.131.48.72 132.131.48.73 132.131.48.74 132.131.48.75 132.131.48.76 132.131.48.77 132.131.48.78 132.131.48.79 132.131.48.80 132.131.48.81 132.131.48.82 132.131.48.83 132.131.48.84 132.131.48.85 132.131.48.86 132.131.48.87 132.131.48.88 132.131.48.89 132.131.48.90 132.131.48.91 132.131.48.92 132.131.48.93 132.131.48.94 132.131.48.95 132.131.48.96 132.131.48.97 132.131.48.98 132.131.48.99 132.131.48.100 132.131.48.101 132.131.48.102 132.131.48.103 132.131.48.104 132.131.48.105 132.131.48.106 132.131.48.107 132.131.48.108 132.131.48.109 132.131.48.110 132.131.48.111 132.131.48.112 132.131.48.113 132.131.48.114 132.131.48.115 132.131.48.116 132.131.48.117 132.131.48.118 132.131.48.119 132.131.48.120 132.131.48.121 132.131.48.122 132.131.48.123 132.131.48.124 132.131.48.125 132.131.48.126 132.131.48.127 132.131.48.128 132.131.48.129 132.131.48.130 132.131.48.131 132.131.48.132 132.131.48.133 132.131.48.134 132.131.48.135 132.131.48.136 132.131.48.137 132.131.48.138 132.131.48.139 132.131.48.140 132.131.48.141 132.131.48.142 132.131.48.143 132.131.48.144 132.131.48.145 132.131.48.146 132.131.48.147 132.131.48.148 132.131.48.149 132.131.48.150 132.131.48.151 132.131.48.152 132.131.48.153 132.131.48.154 132.131.48.155 132.131.48.156 132.131.48.157 132.131.48.158 132.131.48.159 132.131.48.160 132.131.48.161 132.131.48.162 132.131.48.163 132.131.48.164 132.131.48.165 132.131.48.166 132.131.48.167 132.131.48.168 132.131.48.169 132.131.48.170 132.131.48.171 132.131.48.172 132.131.48.173 132.131.48.174 132.131.48.175 132.131.48.176 132.131.48.177 132.131.48.178 132.131.48.179 132.131.48.180 132.131.48.181 132.131.48.182 132.131.48.183 132.131.48.184 132.131.48.185 132.131.48.186 132.131.48.187 132.131.48.188 132.131.48.189 132.131.48.190 132.131.48.191 132.131.48.192 132.131.48.193 132.131.48.194 132.131.48.195 132.131.48.196 132.131.48.197 132.131.48.198 132.131.48.199 132.131.48.200 132.131.48.201 132.131.48.202 132.131.48.203 132.131.48.204 132.131.48.205 132.131.48.206 132.131.48.207 132.131.48.208 132.131.48.209 132.131.48.210 132.131.48.211 132.131.48.212 132.131.48.213 132.131.48.214 132.131.48.215 132.131.48.216 132.131.48.217 132.131.48.218 132.131.48.219 132.131.48.220 132.131.48.221 132.131.48.222 132.131.48.223 132.131.48.224 132.131.48.225 132.131.48.226 132.131.48.227 132.131.48.228 132.131.48.229 132.131.48.230 132.131.48.231 132.131.48.232 132.131.48.233 132.131.48.234 132.131.48.235 132.131.48.236 132.131.48.237 132.131.48.238 132.131.48.239 132.131.48.240 132.131.48.241 132.131.48.242 132.131.48.243 132.131.48.244 132.131.48.245 132.131.48.246 132.131.48.247 132.131.48.248 132.131.48.249 132.131.48.250 132.131.48.251 132.131.48.252 132.131.48.253 132.131.48.254 132.131.48.255 + 1.8K more (range too large to list inline)

BGP Routing

Live BGP anomalies →

This block is announced in BGP, observed across our RIPE RIS collectors.

Announced prefix

132.131.48.0/21

Origin AS

AS306

Announcement samples

23,937

Last seen

2026-07-23 08:11:19

Frequently Asked Questions

What is 132.131.48.0/21?

132.131.48.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 132.131.48.0 to 132.131.55.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 132.131.48.0/21 network?

The 132.131.48.0/21 range is allocated to United States Department of Defense DoD and announced via AS306 from United States.