181.57.48.0/21 CIDR Lookup — 2.0K IPs Owned…

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.

78/100

Moderate

How this score is built

Baseline (neutral) 65
Has a reverse-DNS (PTR) record +5
Isp allocation +5
Established allocation (14y) +3
Trust score 78 / 100

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

Geolocation

First 256 of 2,048 IP addresses in 181.57.48.0/21

181.57.48.0 181.57.48.1 181.57.48.2 181.57.48.3 181.57.48.4 181.57.48.5 181.57.48.6 181.57.48.7 181.57.48.8 181.57.48.9 181.57.48.10 181.57.48.11 181.57.48.12 181.57.48.13 181.57.48.14 181.57.48.15 181.57.48.16 181.57.48.17 181.57.48.18 181.57.48.19 181.57.48.20 181.57.48.21 181.57.48.22 181.57.48.23 181.57.48.24 181.57.48.25 181.57.48.26 181.57.48.27 181.57.48.28 181.57.48.29 181.57.48.30 181.57.48.31 181.57.48.32 181.57.48.33 181.57.48.34 181.57.48.35 181.57.48.36 181.57.48.37 181.57.48.38 181.57.48.39 181.57.48.40 181.57.48.41 181.57.48.42 181.57.48.43 181.57.48.44 181.57.48.45 181.57.48.46 181.57.48.47 181.57.48.48 181.57.48.49 181.57.48.50 181.57.48.51 181.57.48.52 181.57.48.53 181.57.48.54 181.57.48.55 181.57.48.56 181.57.48.57 181.57.48.58 181.57.48.59 181.57.48.60 181.57.48.61 181.57.48.62 181.57.48.63 181.57.48.64 181.57.48.65 181.57.48.66 181.57.48.67 181.57.48.68 181.57.48.69 181.57.48.70 181.57.48.71 181.57.48.72 181.57.48.73 181.57.48.74 181.57.48.75 181.57.48.76 181.57.48.77 181.57.48.78 181.57.48.79 181.57.48.80 181.57.48.81 181.57.48.82 181.57.48.83 181.57.48.84 181.57.48.85 181.57.48.86 181.57.48.87 181.57.48.88 181.57.48.89 181.57.48.90 181.57.48.91 181.57.48.92 181.57.48.93 181.57.48.94 181.57.48.95 181.57.48.96 181.57.48.97 181.57.48.98 181.57.48.99 181.57.48.100 181.57.48.101 181.57.48.102 181.57.48.103 181.57.48.104 181.57.48.105 181.57.48.106 181.57.48.107 181.57.48.108 181.57.48.109 181.57.48.110 181.57.48.111 181.57.48.112 181.57.48.113 181.57.48.114 181.57.48.115 181.57.48.116 181.57.48.117 181.57.48.118 181.57.48.119 181.57.48.120 181.57.48.121 181.57.48.122 181.57.48.123 181.57.48.124 181.57.48.125 181.57.48.126 181.57.48.127 181.57.48.128 181.57.48.129 181.57.48.130 181.57.48.131 181.57.48.132 181.57.48.133 181.57.48.134 181.57.48.135 181.57.48.136 181.57.48.137 181.57.48.138 181.57.48.139 181.57.48.140 181.57.48.141 181.57.48.142 181.57.48.143 181.57.48.144 181.57.48.145 181.57.48.146 181.57.48.147 181.57.48.148 181.57.48.149 181.57.48.150 181.57.48.151 181.57.48.152 181.57.48.153 181.57.48.154 181.57.48.155 181.57.48.156 181.57.48.157 181.57.48.158 181.57.48.159 181.57.48.160 181.57.48.161 181.57.48.162 181.57.48.163 181.57.48.164 181.57.48.165 181.57.48.166 181.57.48.167 181.57.48.168 181.57.48.169 181.57.48.170 181.57.48.171 181.57.48.172 181.57.48.173 181.57.48.174 181.57.48.175 181.57.48.176 181.57.48.177 181.57.48.178 181.57.48.179 181.57.48.180 181.57.48.181 181.57.48.182 181.57.48.183 181.57.48.184 181.57.48.185 181.57.48.186 181.57.48.187 181.57.48.188 181.57.48.189 181.57.48.190 181.57.48.191 181.57.48.192 181.57.48.193 181.57.48.194 181.57.48.195 181.57.48.196 181.57.48.197 181.57.48.198 181.57.48.199 181.57.48.200 181.57.48.201 181.57.48.202 181.57.48.203 181.57.48.204 181.57.48.205 181.57.48.206 181.57.48.207 181.57.48.208 181.57.48.209 181.57.48.210 181.57.48.211 181.57.48.212 181.57.48.213 181.57.48.214 181.57.48.215 181.57.48.216 181.57.48.217 181.57.48.218 181.57.48.219 181.57.48.220 181.57.48.221 181.57.48.222 181.57.48.223 181.57.48.224 181.57.48.225 181.57.48.226 181.57.48.227 181.57.48.228 181.57.48.229 181.57.48.230 181.57.48.231 181.57.48.232 181.57.48.233 181.57.48.234 181.57.48.235 181.57.48.236 181.57.48.237 181.57.48.238 181.57.48.239 181.57.48.240 181.57.48.241 181.57.48.242 181.57.48.243 181.57.48.244 181.57.48.245 181.57.48.246 181.57.48.247 181.57.48.248 181.57.48.249 181.57.48.250 181.57.48.251 181.57.48.252 181.57.48.253 181.57.48.254 181.57.48.255 + 1.8K 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	RIR
2026-05-10	New Allocation	—	CO	lacnic

Frequently Asked Questions

What is 181.57.48.0/21?

181.57.48.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 181.57.48.0 to 181.57.55.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 181.57.48.0/21 network?

The 181.57.48.0/21 range is allocated to Telmex Colombia S.A. and announced via AS10620 from Colombia.