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CIDR Range

40.38.0.0/15

131.1K IPs /15 Amazon Data Services Ireland Ltd AS8987 United States ARIN
Addresses
131,072
131.1K
IP Range
40.38.0.0
→ 40.39.255.255
Sub-ranges
8+
within this block
PTR Density
100.0%
131.1K of 131.1K 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.

67/100
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 40.38.0.0/15

CIDRIPsOrganizationASNCountry
40.38.0.0/16 65.5K Amazon Data Services Ireland Ltd AS8987 US
40.38.0.0/16 65.5K Amazon Data Services Ireland Ltd AS8987 US
40.39.0.0/16 65.5K Amazon.com, Inc. AS16509 US
40.39.0.0/16 65.5K Amazon Data Services Ireland Ltd AS8987 US
40.39.0.0/17 32.8K Amazon Data Services Ireland Ltd AS8987 US
40.39.128.0/18 16.4K Amazon Data Services Ireland Ltd AS8987 US
40.39.192.0/19 8.2K Amazon Data Services Ireland Ltd AS8987 US
40.39.224.0/19 8.2K Amazon Data Services Ireland Ltd AS8987 US

Geolocation

First 256 of 131,072 IP addresses in 40.38.0.0/15

40.38.0.0 40.38.0.1 40.38.0.2 40.38.0.3 40.38.0.4 40.38.0.5 40.38.0.6 40.38.0.7 40.38.0.8 40.38.0.9 40.38.0.10 40.38.0.11 40.38.0.12 40.38.0.13 40.38.0.14 40.38.0.15 40.38.0.16 40.38.0.17 40.38.0.18 40.38.0.19 40.38.0.20 40.38.0.21 40.38.0.22 40.38.0.23 40.38.0.24 40.38.0.25 40.38.0.26 40.38.0.27 40.38.0.28 40.38.0.29 40.38.0.30 40.38.0.31 40.38.0.32 40.38.0.33 40.38.0.34 40.38.0.35 40.38.0.36 40.38.0.37 40.38.0.38 40.38.0.39 40.38.0.40 40.38.0.41 40.38.0.42 40.38.0.43 40.38.0.44 40.38.0.45 40.38.0.46 40.38.0.47 40.38.0.48 40.38.0.49 40.38.0.50 40.38.0.51 40.38.0.52 40.38.0.53 40.38.0.54 40.38.0.55 40.38.0.56 40.38.0.57 40.38.0.58 40.38.0.59 40.38.0.60 40.38.0.61 40.38.0.62 40.38.0.63 40.38.0.64 40.38.0.65 40.38.0.66 40.38.0.67 40.38.0.68 40.38.0.69 40.38.0.70 40.38.0.71 40.38.0.72 40.38.0.73 40.38.0.74 40.38.0.75 40.38.0.76 40.38.0.77 40.38.0.78 40.38.0.79 40.38.0.80 40.38.0.81 40.38.0.82 40.38.0.83 40.38.0.84 40.38.0.85 40.38.0.86 40.38.0.87 40.38.0.88 40.38.0.89 40.38.0.90 40.38.0.91 40.38.0.92 40.38.0.93 40.38.0.94 40.38.0.95 40.38.0.96 40.38.0.97 40.38.0.98 40.38.0.99 40.38.0.100 40.38.0.101 40.38.0.102 40.38.0.103 40.38.0.104 40.38.0.105 40.38.0.106 40.38.0.107 40.38.0.108 40.38.0.109 40.38.0.110 40.38.0.111 40.38.0.112 40.38.0.113 40.38.0.114 40.38.0.115 40.38.0.116 40.38.0.117 40.38.0.118 40.38.0.119 40.38.0.120 40.38.0.121 40.38.0.122 40.38.0.123 40.38.0.124 40.38.0.125 40.38.0.126 40.38.0.127 40.38.0.128 40.38.0.129 40.38.0.130 40.38.0.131 40.38.0.132 40.38.0.133 40.38.0.134 40.38.0.135 40.38.0.136 40.38.0.137 40.38.0.138 40.38.0.139 40.38.0.140 40.38.0.141 40.38.0.142 40.38.0.143 40.38.0.144 40.38.0.145 40.38.0.146 40.38.0.147 40.38.0.148 40.38.0.149 40.38.0.150 40.38.0.151 40.38.0.152 40.38.0.153 40.38.0.154 40.38.0.155 40.38.0.156 40.38.0.157 40.38.0.158 40.38.0.159 40.38.0.160 40.38.0.161 40.38.0.162 40.38.0.163 40.38.0.164 40.38.0.165 40.38.0.166 40.38.0.167 40.38.0.168 40.38.0.169 40.38.0.170 40.38.0.171 40.38.0.172 40.38.0.173 40.38.0.174 40.38.0.175 40.38.0.176 40.38.0.177 40.38.0.178 40.38.0.179 40.38.0.180 40.38.0.181 40.38.0.182 40.38.0.183 40.38.0.184 40.38.0.185 40.38.0.186 40.38.0.187 40.38.0.188 40.38.0.189 40.38.0.190 40.38.0.191 40.38.0.192 40.38.0.193 40.38.0.194 40.38.0.195 40.38.0.196 40.38.0.197 40.38.0.198 40.38.0.199 40.38.0.200 40.38.0.201 40.38.0.202 40.38.0.203 40.38.0.204 40.38.0.205 40.38.0.206 40.38.0.207 40.38.0.208 40.38.0.209 40.38.0.210 40.38.0.211 40.38.0.212 40.38.0.213 40.38.0.214 40.38.0.215 40.38.0.216 40.38.0.217 40.38.0.218 40.38.0.219 40.38.0.220 40.38.0.221 40.38.0.222 40.38.0.223 40.38.0.224 40.38.0.225 40.38.0.226 40.38.0.227 40.38.0.228 40.38.0.229 40.38.0.230 40.38.0.231 40.38.0.232 40.38.0.233 40.38.0.234 40.38.0.235 40.38.0.236 40.38.0.237 40.38.0.238 40.38.0.239 40.38.0.240 40.38.0.241 40.38.0.242 40.38.0.243 40.38.0.244 40.38.0.245 40.38.0.246 40.38.0.247 40.38.0.248 40.38.0.249 40.38.0.250 40.38.0.251 40.38.0.252 40.38.0.253 40.38.0.254 40.38.0.255 + 130.8K more (range too large to list inline)

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 40.38.0.0/15?

40.38.0.0/15 is a CIDR network block containing 131,072 IPv4 addresses (from 40.38.0.0 to 40.39.255.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 40.38.0.0/15 network?

The 40.38.0.0/15 range is allocated to Amazon Data Services Ireland Ltd and announced via AS8987 from United States.

Last updated: 2026-07-18 11:40:32 UTC
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