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CIDR Range

3.163.0.0/16

65.5K IPs /16 Amazon.com, Inc. AS16509 United States ARIN
Addresses
65,536
65.5K
IP Range
3.163.0.0
→ 3.163.255.255
Sub-ranges
50+
within this block
PTR Density
90.6%
59.4K of 65.5K 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.

73/100
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 3.163.0.0/16

CIDRIPsOrganizationASNCountry
3.163.96.0/19 8.2K Amazon.com, Inc. AS16509 US
3.163.160.0/19 8.2K Amazon.com, Inc. AS16509 US
3.163.16.0/20 4.1K Amazon.com, Inc. AS16509 US
3.163.80.0/20 4.1K Amazon.com, Inc. AS16509 US
3.163.152.0/21 2.0K Amazon.com, Inc. AS16509 US
3.163.64.0/21 2.0K Amazon.com, Inc. AS16509 BR
3.163.208.0/21 2.0K Amazon.com, Inc. AS16509 JP
3.163.48.0/21 2.0K Amazon.com, Inc. AS16509 CO
3.163.128.0/21 2.0K Amazon.com, Inc. AS16509 US
3.163.56.0/22 1.0K Amazon.com, Inc. AS16509 CO
3.163.72.0/22 1.0K Amazon.com, Inc. AS16509 BR
3.163.144.0/22 1.0K Amazon.com, Inc. AS16509 AR
3.163.76.0/22 1.0K Amazon.com, Inc. AS16509 US
3.163.196.0/22 1.0K Amazon.com, Inc. AS16509 JP
3.163.200.0/22 1.0K Amazon.com, Inc. AS16509 JP
3.163.4.0/22 1.0K Amazon.com, Inc. AS16509 BR
3.163.8.0/22 1.0K Amazon.com, Inc. AS16509 BR
3.163.224.0/22 1.0K Amazon.com, Inc. AS16509 JP
3.163.40.0/22 1.0K Amazon.com, Inc. AS16509 AU
3.163.216.0/22 1.0K Amazon.com, Inc. AS16509 JP
3.163.36.0/22 1.0K Amazon.com, Inc. AS16509 AU
3.163.140.0/22 1.0K Amazon.com, Inc. AS16509 AR
3.163.148.0/23 512 Amazon.com, Inc. AS16509 AR
3.163.206.0/23 512 Amazon.com, Inc. AS16509 US
3.163.232.0/23 512 Amazon.com, Inc. AS16509 US
3.163.194.0/23 512 Amazon.com, Inc. AS16509 JP
3.163.204.0/23 512 Amazon.com, Inc. AS16509 JP
3.163.228.0/23 512 Amazon.com, Inc. AS16509 JP
3.163.138.0/23 512 Amazon.com, Inc. AS16509 AR
3.163.136.0/23 512 Amazon.com, Inc. AS16509 US
3.163.34.0/23 512 Amazon.com, Inc. AS16509 AU
3.163.44.0/23 512 Amazon.com, Inc. AS16509 AU
3.163.46.0/23 512 Amazon.com, Inc. AS16509 US
3.163.254.0/23 512 Amazon.com, Inc. AS16509 DE
3.163.248.0/23 512 Amazon.com, Inc. AS16509 US
3.163.12.0/23 512 Amazon.com, Inc. AS16509 BR
3.163.2.0/23 512 Amazon.com, Inc. AS16509 BR
3.163.0.0/23 512 Amazon.com, Inc. AS16509 US
3.163.246.0/24 256 Amazon.com, Inc. AS16509 US
3.163.238.0/24 256 Amazon.com, Inc. AS16509 US
3.163.235.0/24 256 Amazon.com, Inc. AS16509 IT
3.163.234.0/24 256 Amazon.com, Inc. AS16509 US
3.163.240.0/24 256 Amazon.com, Inc. AS16509 KR
3.163.236.0/24 256 Amazon.com, Inc. AS16509 US
3.163.245.0/24 256 Amazon.com, Inc. AS16509 US
3.163.244.0/24 256 Amazon.com, Inc. AS16509 IL
3.163.247.0/24 256 Amazon.com, Inc. AS16509 CH
3.163.241.0/24 256 Amazon.com, Inc. AS16509 US
3.163.242.0/24 256 Amazon.com, Inc. AS16509 US
3.163.250.0/24 256 Amazon.com, Inc. AS16509 US

Geolocation

First 256 of 65,536 IP addresses in 3.163.0.0/16

3.163.0.0 3.163.0.1 3.163.0.2 3.163.0.3 3.163.0.4 3.163.0.5 3.163.0.6 3.163.0.7 3.163.0.8 3.163.0.9 3.163.0.10 3.163.0.11 3.163.0.12 3.163.0.13 3.163.0.14 3.163.0.15 3.163.0.16 3.163.0.17 3.163.0.18 3.163.0.19 3.163.0.20 3.163.0.21 3.163.0.22 3.163.0.23 3.163.0.24 3.163.0.25 3.163.0.26 3.163.0.27 3.163.0.28 3.163.0.29 3.163.0.30 3.163.0.31 3.163.0.32 3.163.0.33 3.163.0.34 3.163.0.35 3.163.0.36 3.163.0.37 3.163.0.38 3.163.0.39 3.163.0.40 3.163.0.41 3.163.0.42 3.163.0.43 3.163.0.44 3.163.0.45 3.163.0.46 3.163.0.47 3.163.0.48 3.163.0.49 3.163.0.50 3.163.0.51 3.163.0.52 3.163.0.53 3.163.0.54 3.163.0.55 3.163.0.56 3.163.0.57 3.163.0.58 3.163.0.59 3.163.0.60 3.163.0.61 3.163.0.62 3.163.0.63 3.163.0.64 3.163.0.65 3.163.0.66 3.163.0.67 3.163.0.68 3.163.0.69 3.163.0.70 3.163.0.71 3.163.0.72 3.163.0.73 3.163.0.74 3.163.0.75 3.163.0.76 3.163.0.77 3.163.0.78 3.163.0.79 3.163.0.80 3.163.0.81 3.163.0.82 3.163.0.83 3.163.0.84 3.163.0.85 3.163.0.86 3.163.0.87 3.163.0.88 3.163.0.89 3.163.0.90 3.163.0.91 3.163.0.92 3.163.0.93 3.163.0.94 3.163.0.95 3.163.0.96 3.163.0.97 3.163.0.98 3.163.0.99 3.163.0.100 3.163.0.101 3.163.0.102 3.163.0.103 3.163.0.104 3.163.0.105 3.163.0.106 3.163.0.107 3.163.0.108 3.163.0.109 3.163.0.110 3.163.0.111 3.163.0.112 3.163.0.113 3.163.0.114 3.163.0.115 3.163.0.116 3.163.0.117 3.163.0.118 3.163.0.119 3.163.0.120 3.163.0.121 3.163.0.122 3.163.0.123 3.163.0.124 3.163.0.125 3.163.0.126 3.163.0.127 3.163.0.128 3.163.0.129 3.163.0.130 3.163.0.131 3.163.0.132 3.163.0.133 3.163.0.134 3.163.0.135 3.163.0.136 3.163.0.137 3.163.0.138 3.163.0.139 3.163.0.140 3.163.0.141 3.163.0.142 3.163.0.143 3.163.0.144 3.163.0.145 3.163.0.146 3.163.0.147 3.163.0.148 3.163.0.149 3.163.0.150 3.163.0.151 3.163.0.152 3.163.0.153 3.163.0.154 3.163.0.155 3.163.0.156 3.163.0.157 3.163.0.158 3.163.0.159 3.163.0.160 3.163.0.161 3.163.0.162 3.163.0.163 3.163.0.164 3.163.0.165 3.163.0.166 3.163.0.167 3.163.0.168 3.163.0.169 3.163.0.170 3.163.0.171 3.163.0.172 3.163.0.173 3.163.0.174 3.163.0.175 3.163.0.176 3.163.0.177 3.163.0.178 3.163.0.179 3.163.0.180 3.163.0.181 3.163.0.182 3.163.0.183 3.163.0.184 3.163.0.185 3.163.0.186 3.163.0.187 3.163.0.188 3.163.0.189 3.163.0.190 3.163.0.191 3.163.0.192 3.163.0.193 3.163.0.194 3.163.0.195 3.163.0.196 3.163.0.197 3.163.0.198 3.163.0.199 3.163.0.200 3.163.0.201 3.163.0.202 3.163.0.203 3.163.0.204 3.163.0.205 3.163.0.206 3.163.0.207 3.163.0.208 3.163.0.209 3.163.0.210 3.163.0.211 3.163.0.212 3.163.0.213 3.163.0.214 3.163.0.215 3.163.0.216 3.163.0.217 3.163.0.218 3.163.0.219 3.163.0.220 3.163.0.221 3.163.0.222 3.163.0.223 3.163.0.224 3.163.0.225 3.163.0.226 3.163.0.227 3.163.0.228 3.163.0.229 3.163.0.230 3.163.0.231 3.163.0.232 3.163.0.233 3.163.0.234 3.163.0.235 3.163.0.236 3.163.0.237 3.163.0.238 3.163.0.239 3.163.0.240 3.163.0.241 3.163.0.242 3.163.0.243 3.163.0.244 3.163.0.245 3.163.0.246 3.163.0.247 3.163.0.248 3.163.0.249 3.163.0.250 3.163.0.251 3.163.0.252 3.163.0.253 3.163.0.254 3.163.0.255 + 65.3K more (range too large to list inline)

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 3.128.0.0/10.

Announced prefix
3.128.0.0/10
Origin AS
AS16509
Announcement samples
5,095
Last seen
2026-07-19 22:01:41

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 3.163.0.0/16?

3.163.0.0/16 is a CIDR network block containing 65,536 IPv4 addresses (from 3.163.0.0 to 3.163.255.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 3.163.0.0/16 network?

The 3.163.0.0/16 range is allocated to Amazon.com, Inc. and announced via AS16509 from United States.

Last updated: 2026-07-19 23:25:32 UTC
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