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CIDR Range

208.51.192.0/19

8.2K IPs /19 Level 3 Parent, LLC AS3549 United States ARIN
Addresses
8,192
8.2K
IP Range
208.51.192.0
→ 208.51.223.255
Sub-ranges
12+
within this block
PTR Density
3.0%
247 of 8.2K 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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 208.51.192.0/19

CIDRIPsOrganizationASNCountry
208.51.216.0/21 2.0K Level 3 Parent, LLC AS3549 US
208.51.200.0/21 2.0K Level 3 Parent, LLC AS3549 US
208.51.192.0/22 1.0K Level 3 Parent, LLC AS3549 US
208.51.208.0/22 1.0K Level 3 Parent, LLC AS3549 US
208.51.196.0/23 512 Level 3 Parent, LLC AS3549 US
208.51.214.0/23 512 Level 3 Parent, LLC AS3549 US
208.51.199.0/24 256 Level 3 Parent, LLC AS3549 US
208.51.212.0/24 256 Level 3 Parent, LLC AS3549 MX
208.51.213.0/24 256 Level 3 Parent, LLC AS3549 US
208.51.198.128/25 128 Level 3 Parent, LLC AS3549 GB
208.51.198.64/26 64 Level 3 Parent, LLC AS3549 DE
208.51.198.0/26 64 Level 3 Parent, LLC AS3549 US

Geolocation

First 256 of 8,192 IP addresses in 208.51.192.0/19

208.51.192.0 208.51.192.1 208.51.192.2 208.51.192.3 208.51.192.4 208.51.192.5 208.51.192.6 208.51.192.7 208.51.192.8 208.51.192.9 208.51.192.10 208.51.192.11 208.51.192.12 208.51.192.13 208.51.192.14 208.51.192.15 208.51.192.16 208.51.192.17 208.51.192.18 208.51.192.19 208.51.192.20 208.51.192.21 208.51.192.22 208.51.192.23 208.51.192.24 208.51.192.25 208.51.192.26 208.51.192.27 208.51.192.28 208.51.192.29 208.51.192.30 208.51.192.31 208.51.192.32 208.51.192.33 208.51.192.34 208.51.192.35 208.51.192.36 208.51.192.37 208.51.192.38 208.51.192.39 208.51.192.40 208.51.192.41 208.51.192.42 208.51.192.43 208.51.192.44 208.51.192.45 208.51.192.46 208.51.192.47 208.51.192.48 208.51.192.49 208.51.192.50 208.51.192.51 208.51.192.52 208.51.192.53 208.51.192.54 208.51.192.55 208.51.192.56 208.51.192.57 208.51.192.58 208.51.192.59 208.51.192.60 208.51.192.61 208.51.192.62 208.51.192.63 208.51.192.64 208.51.192.65 208.51.192.66 208.51.192.67 208.51.192.68 208.51.192.69 208.51.192.70 208.51.192.71 208.51.192.72 208.51.192.73 208.51.192.74 208.51.192.75 208.51.192.76 208.51.192.77 208.51.192.78 208.51.192.79 208.51.192.80 208.51.192.81 208.51.192.82 208.51.192.83 208.51.192.84 208.51.192.85 208.51.192.86 208.51.192.87 208.51.192.88 208.51.192.89 208.51.192.90 208.51.192.91 208.51.192.92 208.51.192.93 208.51.192.94 208.51.192.95 208.51.192.96 208.51.192.97 208.51.192.98 208.51.192.99 208.51.192.100 208.51.192.101 208.51.192.102 208.51.192.103 208.51.192.104 208.51.192.105 208.51.192.106 208.51.192.107 208.51.192.108 208.51.192.109 208.51.192.110 208.51.192.111 208.51.192.112 208.51.192.113 208.51.192.114 208.51.192.115 208.51.192.116 208.51.192.117 208.51.192.118 208.51.192.119 208.51.192.120 208.51.192.121 208.51.192.122 208.51.192.123 208.51.192.124 208.51.192.125 208.51.192.126 208.51.192.127 208.51.192.128 208.51.192.129 208.51.192.130 208.51.192.131 208.51.192.132 208.51.192.133 208.51.192.134 208.51.192.135 208.51.192.136 208.51.192.137 208.51.192.138 208.51.192.139 208.51.192.140 208.51.192.141 208.51.192.142 208.51.192.143 208.51.192.144 208.51.192.145 208.51.192.146 208.51.192.147 208.51.192.148 208.51.192.149 208.51.192.150 208.51.192.151 208.51.192.152 208.51.192.153 208.51.192.154 208.51.192.155 208.51.192.156 208.51.192.157 208.51.192.158 208.51.192.159 208.51.192.160 208.51.192.161 208.51.192.162 208.51.192.163 208.51.192.164 208.51.192.165 208.51.192.166 208.51.192.167 208.51.192.168 208.51.192.169 208.51.192.170 208.51.192.171 208.51.192.172 208.51.192.173 208.51.192.174 208.51.192.175 208.51.192.176 208.51.192.177 208.51.192.178 208.51.192.179 208.51.192.180 208.51.192.181 208.51.192.182 208.51.192.183 208.51.192.184 208.51.192.185 208.51.192.186 208.51.192.187 208.51.192.188 208.51.192.189 208.51.192.190 208.51.192.191 208.51.192.192 208.51.192.193 208.51.192.194 208.51.192.195 208.51.192.196 208.51.192.197 208.51.192.198 208.51.192.199 208.51.192.200 208.51.192.201 208.51.192.202 208.51.192.203 208.51.192.204 208.51.192.205 208.51.192.206 208.51.192.207 208.51.192.208 208.51.192.209 208.51.192.210 208.51.192.211 208.51.192.212 208.51.192.213 208.51.192.214 208.51.192.215 208.51.192.216 208.51.192.217 208.51.192.218 208.51.192.219 208.51.192.220 208.51.192.221 208.51.192.222 208.51.192.223 208.51.192.224 208.51.192.225 208.51.192.226 208.51.192.227 208.51.192.228 208.51.192.229 208.51.192.230 208.51.192.231 208.51.192.232 208.51.192.233 208.51.192.234 208.51.192.235 208.51.192.236 208.51.192.237 208.51.192.238 208.51.192.239 208.51.192.240 208.51.192.241 208.51.192.242 208.51.192.243 208.51.192.244 208.51.192.245 208.51.192.246 208.51.192.247 208.51.192.248 208.51.192.249 208.51.192.250 208.51.192.251 208.51.192.252 208.51.192.253 208.51.192.254 208.51.192.255 + 7.9K more (range too large to list inline)

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 208.51.0.0/16.

Announced prefix
208.51.0.0/16
Origin AS
AS3549
Announcement samples
3,678
Last seen
2026-07-18 11:59:59

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 208.51.192.0/19?

208.51.192.0/19 is a CIDR network block containing 8,192 IPv4 addresses (from 208.51.192.0 to 208.51.223.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 208.51.192.0/19 network?

The 208.51.192.0/19 range is allocated to Level 3 Parent, LLC and announced via AS3549 from United States.

Last updated: 2026-07-18 12:25:31 UTC
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