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CIDR Range

128.211.0.0/18

16.4K IPs /18 Purdue University AS17 United States ARIN
Addresses
16,384
16.4K
IP Range
128.211.0.0
→ 128.211.63.255
Sub-ranges
7+
within this block
PTR Density
0.0%
0 of 16.4K 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.

77/100
Moderate
How this score is built

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

Ranges inside 128.211.0.0/18

CIDRIPsOrganizationASNCountry
128.211.32.0/19 8.2K Purdue University AS17 US
128.211.0.0/20 4.1K Purdue University AS17 US
128.211.24.0/21 2.0K Purdue University AS17 US
128.211.16.0/22 1.0K Purdue University AS17 US
128.211.22.0/23 512 Purdue University AS17 US
128.211.20.0/24 256 Purdue University AS397511 US
128.211.21.0/24 256 Purdue University AS17 US

Geolocation

First 256 of 16,384 IP addresses in 128.211.0.0/18

128.211.0.0 128.211.0.1 128.211.0.2 128.211.0.3 128.211.0.4 128.211.0.5 128.211.0.6 128.211.0.7 128.211.0.8 128.211.0.9 128.211.0.10 128.211.0.11 128.211.0.12 128.211.0.13 128.211.0.14 128.211.0.15 128.211.0.16 128.211.0.17 128.211.0.18 128.211.0.19 128.211.0.20 128.211.0.21 128.211.0.22 128.211.0.23 128.211.0.24 128.211.0.25 128.211.0.26 128.211.0.27 128.211.0.28 128.211.0.29 128.211.0.30 128.211.0.31 128.211.0.32 128.211.0.33 128.211.0.34 128.211.0.35 128.211.0.36 128.211.0.37 128.211.0.38 128.211.0.39 128.211.0.40 128.211.0.41 128.211.0.42 128.211.0.43 128.211.0.44 128.211.0.45 128.211.0.46 128.211.0.47 128.211.0.48 128.211.0.49 128.211.0.50 128.211.0.51 128.211.0.52 128.211.0.53 128.211.0.54 128.211.0.55 128.211.0.56 128.211.0.57 128.211.0.58 128.211.0.59 128.211.0.60 128.211.0.61 128.211.0.62 128.211.0.63 128.211.0.64 128.211.0.65 128.211.0.66 128.211.0.67 128.211.0.68 128.211.0.69 128.211.0.70 128.211.0.71 128.211.0.72 128.211.0.73 128.211.0.74 128.211.0.75 128.211.0.76 128.211.0.77 128.211.0.78 128.211.0.79 128.211.0.80 128.211.0.81 128.211.0.82 128.211.0.83 128.211.0.84 128.211.0.85 128.211.0.86 128.211.0.87 128.211.0.88 128.211.0.89 128.211.0.90 128.211.0.91 128.211.0.92 128.211.0.93 128.211.0.94 128.211.0.95 128.211.0.96 128.211.0.97 128.211.0.98 128.211.0.99 128.211.0.100 128.211.0.101 128.211.0.102 128.211.0.103 128.211.0.104 128.211.0.105 128.211.0.106 128.211.0.107 128.211.0.108 128.211.0.109 128.211.0.110 128.211.0.111 128.211.0.112 128.211.0.113 128.211.0.114 128.211.0.115 128.211.0.116 128.211.0.117 128.211.0.118 128.211.0.119 128.211.0.120 128.211.0.121 128.211.0.122 128.211.0.123 128.211.0.124 128.211.0.125 128.211.0.126 128.211.0.127 128.211.0.128 128.211.0.129 128.211.0.130 128.211.0.131 128.211.0.132 128.211.0.133 128.211.0.134 128.211.0.135 128.211.0.136 128.211.0.137 128.211.0.138 128.211.0.139 128.211.0.140 128.211.0.141 128.211.0.142 128.211.0.143 128.211.0.144 128.211.0.145 128.211.0.146 128.211.0.147 128.211.0.148 128.211.0.149 128.211.0.150 128.211.0.151 128.211.0.152 128.211.0.153 128.211.0.154 128.211.0.155 128.211.0.156 128.211.0.157 128.211.0.158 128.211.0.159 128.211.0.160 128.211.0.161 128.211.0.162 128.211.0.163 128.211.0.164 128.211.0.165 128.211.0.166 128.211.0.167 128.211.0.168 128.211.0.169 128.211.0.170 128.211.0.171 128.211.0.172 128.211.0.173 128.211.0.174 128.211.0.175 128.211.0.176 128.211.0.177 128.211.0.178 128.211.0.179 128.211.0.180 128.211.0.181 128.211.0.182 128.211.0.183 128.211.0.184 128.211.0.185 128.211.0.186 128.211.0.187 128.211.0.188 128.211.0.189 128.211.0.190 128.211.0.191 128.211.0.192 128.211.0.193 128.211.0.194 128.211.0.195 128.211.0.196 128.211.0.197 128.211.0.198 128.211.0.199 128.211.0.200 128.211.0.201 128.211.0.202 128.211.0.203 128.211.0.204 128.211.0.205 128.211.0.206 128.211.0.207 128.211.0.208 128.211.0.209 128.211.0.210 128.211.0.211 128.211.0.212 128.211.0.213 128.211.0.214 128.211.0.215 128.211.0.216 128.211.0.217 128.211.0.218 128.211.0.219 128.211.0.220 128.211.0.221 128.211.0.222 128.211.0.223 128.211.0.224 128.211.0.225 128.211.0.226 128.211.0.227 128.211.0.228 128.211.0.229 128.211.0.230 128.211.0.231 128.211.0.232 128.211.0.233 128.211.0.234 128.211.0.235 128.211.0.236 128.211.0.237 128.211.0.238 128.211.0.239 128.211.0.240 128.211.0.241 128.211.0.242 128.211.0.243 128.211.0.244 128.211.0.245 128.211.0.246 128.211.0.247 128.211.0.248 128.211.0.249 128.211.0.250 128.211.0.251 128.211.0.252 128.211.0.253 128.211.0.254 128.211.0.255 + 16.1K more (range too large to list inline)

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 128.211.0.0/16.

Announced prefix
128.211.0.0/16
Origin AS
AS17
Announcement samples
8,318
Last seen
2026-07-23 15:34:00

RIR Ownership History

Atom feed ⇲

Allocation changes captured weekly from regional internet registry (RIR) delegation files.

Date Event From To
2026-05-10 New Allocation — US

Frequently Asked Questions

What is 128.211.0.0/18?

128.211.0.0/18 is a CIDR network block containing 16,384 IPv4 addresses (from 128.211.0.0 to 128.211.63.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 128.211.0.0/18 network?

The 128.211.0.0/18 range is allocated to Purdue University and announced via AS17 from United States.

Last updated: 2026-07-23 15:40:31 UTC
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