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CIDR Range

4.125.0.0/16

65.5K IPs /16 Level 3 Parent, LLC AS3356 United States ARIN
Addresses
65,536
65.5K
IP Range
4.125.0.0
→ 4.125.255.255
Sub-ranges
14+
within this block
PTR Density
0.0%
0 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.

76/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 4.125.0.0/16

CIDRIPsOrganizationASNCountry
4.125.128.0/17 32.8K Level 3 Parent, LLC AS3356 US
4.125.0.0/18 16.4K Level 3 Parent, LLC AS3356 US
4.125.96.0/19 8.2K Level 3 Parent, LLC AS3356 US
4.125.80.0/20 4.1K Level 3 Parent, LLC AS3356 US
4.125.64.0/21 2.0K Level 3 Parent, LLC AS3356 US
4.125.76.0/22 1.0K Level 3 Parent, LLC AS3356 US
4.125.72.0/23 512 Level 3 Parent, LLC AS3356 US
4.125.75.0/24 256 Level 3 Parent, LLC AS3356 US
4.125.74.128/25 128 Level 3 Parent, LLC AS3356 US
4.125.74.64/26 64 Level 3 Parent, LLC AS3356 US
4.125.74.0/27 32 Level 3 Parent, LLC AS3356 US
4.125.74.32/28 16 Level 3 Parent, LLC AS3356 US
4.125.74.56/29 8 Level 3 Parent, LLC AS3356 CA
4.125.74.48/29 8 Level 3 Parent, LLC AS3356 US

Geolocation

First 256 of 65,536 IP addresses in 4.125.0.0/16

4.125.0.0 4.125.0.1 4.125.0.2 4.125.0.3 4.125.0.4 4.125.0.5 4.125.0.6 4.125.0.7 4.125.0.8 4.125.0.9 4.125.0.10 4.125.0.11 4.125.0.12 4.125.0.13 4.125.0.14 4.125.0.15 4.125.0.16 4.125.0.17 4.125.0.18 4.125.0.19 4.125.0.20 4.125.0.21 4.125.0.22 4.125.0.23 4.125.0.24 4.125.0.25 4.125.0.26 4.125.0.27 4.125.0.28 4.125.0.29 4.125.0.30 4.125.0.31 4.125.0.32 4.125.0.33 4.125.0.34 4.125.0.35 4.125.0.36 4.125.0.37 4.125.0.38 4.125.0.39 4.125.0.40 4.125.0.41 4.125.0.42 4.125.0.43 4.125.0.44 4.125.0.45 4.125.0.46 4.125.0.47 4.125.0.48 4.125.0.49 4.125.0.50 4.125.0.51 4.125.0.52 4.125.0.53 4.125.0.54 4.125.0.55 4.125.0.56 4.125.0.57 4.125.0.58 4.125.0.59 4.125.0.60 4.125.0.61 4.125.0.62 4.125.0.63 4.125.0.64 4.125.0.65 4.125.0.66 4.125.0.67 4.125.0.68 4.125.0.69 4.125.0.70 4.125.0.71 4.125.0.72 4.125.0.73 4.125.0.74 4.125.0.75 4.125.0.76 4.125.0.77 4.125.0.78 4.125.0.79 4.125.0.80 4.125.0.81 4.125.0.82 4.125.0.83 4.125.0.84 4.125.0.85 4.125.0.86 4.125.0.87 4.125.0.88 4.125.0.89 4.125.0.90 4.125.0.91 4.125.0.92 4.125.0.93 4.125.0.94 4.125.0.95 4.125.0.96 4.125.0.97 4.125.0.98 4.125.0.99 4.125.0.100 4.125.0.101 4.125.0.102 4.125.0.103 4.125.0.104 4.125.0.105 4.125.0.106 4.125.0.107 4.125.0.108 4.125.0.109 4.125.0.110 4.125.0.111 4.125.0.112 4.125.0.113 4.125.0.114 4.125.0.115 4.125.0.116 4.125.0.117 4.125.0.118 4.125.0.119 4.125.0.120 4.125.0.121 4.125.0.122 4.125.0.123 4.125.0.124 4.125.0.125 4.125.0.126 4.125.0.127 4.125.0.128 4.125.0.129 4.125.0.130 4.125.0.131 4.125.0.132 4.125.0.133 4.125.0.134 4.125.0.135 4.125.0.136 4.125.0.137 4.125.0.138 4.125.0.139 4.125.0.140 4.125.0.141 4.125.0.142 4.125.0.143 4.125.0.144 4.125.0.145 4.125.0.146 4.125.0.147 4.125.0.148 4.125.0.149 4.125.0.150 4.125.0.151 4.125.0.152 4.125.0.153 4.125.0.154 4.125.0.155 4.125.0.156 4.125.0.157 4.125.0.158 4.125.0.159 4.125.0.160 4.125.0.161 4.125.0.162 4.125.0.163 4.125.0.164 4.125.0.165 4.125.0.166 4.125.0.167 4.125.0.168 4.125.0.169 4.125.0.170 4.125.0.171 4.125.0.172 4.125.0.173 4.125.0.174 4.125.0.175 4.125.0.176 4.125.0.177 4.125.0.178 4.125.0.179 4.125.0.180 4.125.0.181 4.125.0.182 4.125.0.183 4.125.0.184 4.125.0.185 4.125.0.186 4.125.0.187 4.125.0.188 4.125.0.189 4.125.0.190 4.125.0.191 4.125.0.192 4.125.0.193 4.125.0.194 4.125.0.195 4.125.0.196 4.125.0.197 4.125.0.198 4.125.0.199 4.125.0.200 4.125.0.201 4.125.0.202 4.125.0.203 4.125.0.204 4.125.0.205 4.125.0.206 4.125.0.207 4.125.0.208 4.125.0.209 4.125.0.210 4.125.0.211 4.125.0.212 4.125.0.213 4.125.0.214 4.125.0.215 4.125.0.216 4.125.0.217 4.125.0.218 4.125.0.219 4.125.0.220 4.125.0.221 4.125.0.222 4.125.0.223 4.125.0.224 4.125.0.225 4.125.0.226 4.125.0.227 4.125.0.228 4.125.0.229 4.125.0.230 4.125.0.231 4.125.0.232 4.125.0.233 4.125.0.234 4.125.0.235 4.125.0.236 4.125.0.237 4.125.0.238 4.125.0.239 4.125.0.240 4.125.0.241 4.125.0.242 4.125.0.243 4.125.0.244 4.125.0.245 4.125.0.246 4.125.0.247 4.125.0.248 4.125.0.249 4.125.0.250 4.125.0.251 4.125.0.252 4.125.0.253 4.125.0.254 4.125.0.255 + 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 4.0.0.0/9.

Announced prefix
4.0.0.0/9
Origin AS
AS3356
Announcement samples
8,640
Last seen
2026-10-13 23:09:56

RIR Ownership History

Atom feed ⇲

Allocation changes captured from regional internet registry (RIR) delegation files, re-imported every six hours.

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

Frequently Asked Questions

What is 4.125.0.0/16?

4.125.0.0/16 is a CIDR network block containing 65,536 IPv4 addresses (from 4.125.0.0 to 4.125.255.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 4.125.0.0/16 network?

The 4.125.0.0/16 range is allocated to Level 3 Parent, LLC and announced via AS3356 from United States.

Last updated: 2026-10-13 23:24:05 UTC
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