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CIDR Range

168.140.181.0/24

256 IPs /24 Optus Customer Network AS10128 Australia APNIC
Addresses
256
256
IP Range
168.140.181.0
→ 168.140.181.255
Sub-ranges
5+
within this block
PTR Density
0.0%
0 of 256 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.

71/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 168.140.181.0/24

CIDRIPsOrganizationASNCountry
168.140.181.0/25 128 Optus Customer Network AS10128 AU
168.140.181.128/25 128 Optus Customer Network AS10128 AU
168.140.181.64/26 64 Optus Customer Network AS10128 AU
168.140.181.0/27 32 Optus Customer Network AS10128 AU
168.140.181.32/27 32 Optus Customer Network AS10128 AU

Geolocation

All 256 IP addresses in 168.140.181.0/24

168.140.181.0 168.140.181.1 168.140.181.2 168.140.181.3 168.140.181.4 168.140.181.5 168.140.181.6 168.140.181.7 168.140.181.8 168.140.181.9 168.140.181.10 168.140.181.11 168.140.181.12 168.140.181.13 168.140.181.14 168.140.181.15 168.140.181.16 168.140.181.17 168.140.181.18 168.140.181.19 168.140.181.20 168.140.181.21 168.140.181.22 168.140.181.23 168.140.181.24 168.140.181.25 168.140.181.26 168.140.181.27 168.140.181.28 168.140.181.29 168.140.181.30 168.140.181.31 168.140.181.32 168.140.181.33 168.140.181.34 168.140.181.35 168.140.181.36 168.140.181.37 168.140.181.38 168.140.181.39 168.140.181.40 168.140.181.41 168.140.181.42 168.140.181.43 168.140.181.44 168.140.181.45 168.140.181.46 168.140.181.47 168.140.181.48 168.140.181.49 168.140.181.50 168.140.181.51 168.140.181.52 168.140.181.53 168.140.181.54 168.140.181.55 168.140.181.56 168.140.181.57 168.140.181.58 168.140.181.59 168.140.181.60 168.140.181.61 168.140.181.62 168.140.181.63 168.140.181.64 168.140.181.65 168.140.181.66 168.140.181.67 168.140.181.68 168.140.181.69 168.140.181.70 168.140.181.71 168.140.181.72 168.140.181.73 168.140.181.74 168.140.181.75 168.140.181.76 168.140.181.77 168.140.181.78 168.140.181.79 168.140.181.80 168.140.181.81 168.140.181.82 168.140.181.83 168.140.181.84 168.140.181.85 168.140.181.86 168.140.181.87 168.140.181.88 168.140.181.89 168.140.181.90 168.140.181.91 168.140.181.92 168.140.181.93 168.140.181.94 168.140.181.95 168.140.181.96 168.140.181.97 168.140.181.98 168.140.181.99 168.140.181.100 168.140.181.101 168.140.181.102 168.140.181.103 168.140.181.104 168.140.181.105 168.140.181.106 168.140.181.107 168.140.181.108 168.140.181.109 168.140.181.110 168.140.181.111 168.140.181.112 168.140.181.113 168.140.181.114 168.140.181.115 168.140.181.116 168.140.181.117 168.140.181.118 168.140.181.119 168.140.181.120 168.140.181.121 168.140.181.122 168.140.181.123 168.140.181.124 168.140.181.125 168.140.181.126 168.140.181.127 168.140.181.128 168.140.181.129 168.140.181.130 168.140.181.131 168.140.181.132 168.140.181.133 168.140.181.134 168.140.181.135 168.140.181.136 168.140.181.137 168.140.181.138 168.140.181.139 168.140.181.140 168.140.181.141 168.140.181.142 168.140.181.143 168.140.181.144 168.140.181.145 168.140.181.146 168.140.181.147 168.140.181.148 168.140.181.149 168.140.181.150 168.140.181.151 168.140.181.152 168.140.181.153 168.140.181.154 168.140.181.155 168.140.181.156 168.140.181.157 168.140.181.158 168.140.181.159 168.140.181.160 168.140.181.161 168.140.181.162 168.140.181.163 168.140.181.164 168.140.181.165 168.140.181.166 168.140.181.167 168.140.181.168 168.140.181.169 168.140.181.170 168.140.181.171 168.140.181.172 168.140.181.173 168.140.181.174 168.140.181.175 168.140.181.176 168.140.181.177 168.140.181.178 168.140.181.179 168.140.181.180 168.140.181.181 168.140.181.182 168.140.181.183 168.140.181.184 168.140.181.185 168.140.181.186 168.140.181.187 168.140.181.188 168.140.181.189 168.140.181.190 168.140.181.191 168.140.181.192 168.140.181.193 168.140.181.194 168.140.181.195 168.140.181.196 168.140.181.197 168.140.181.198 168.140.181.199 168.140.181.200 168.140.181.201 168.140.181.202 168.140.181.203 168.140.181.204 168.140.181.205 168.140.181.206 168.140.181.207 168.140.181.208 168.140.181.209 168.140.181.210 168.140.181.211 168.140.181.212 168.140.181.213 168.140.181.214 168.140.181.215 168.140.181.216 168.140.181.217 168.140.181.218 168.140.181.219 168.140.181.220 168.140.181.221 168.140.181.222 168.140.181.223 168.140.181.224 168.140.181.225 168.140.181.226 168.140.181.227 168.140.181.228 168.140.181.229 168.140.181.230 168.140.181.231 168.140.181.232 168.140.181.233 168.140.181.234 168.140.181.235 168.140.181.236 168.140.181.237 168.140.181.238 168.140.181.239 168.140.181.240 168.140.181.241 168.140.181.242 168.140.181.243 168.140.181.244 168.140.181.245 168.140.181.246 168.140.181.247 168.140.181.248 168.140.181.249 168.140.181.250 168.140.181.251 168.140.181.252 168.140.181.253 168.140.181.254 168.140.181.255

BGP Routing

Live BGP anomalies →

This block is announced in BGP, observed across our RIPE RIS collectors.

Announced prefix
168.140.181.0/24
Origin AS
AS10128
Announcement samples
12,211
Last seen
2026-07-24 23:04:52

RIR Ownership History

Atom feed ⇲

Allocation changes captured weekly from regional internet registry (RIR) delegation files.

Date Event From To
2026-05-10 RIR Transfer arin apnic

Frequently Asked Questions

What is 168.140.181.0/24?

168.140.181.0/24 is a CIDR network block containing 256 IPv4 addresses (from 168.140.181.0 to 168.140.181.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 168.140.181.0/24 network?

The 168.140.181.0/24 range is allocated to Optus Customer Network and announced via AS10128 from Australia.

How many IP addresses are in 168.140.181.0/24?

168.140.181.0/24 contains exactly 256 usable IPv4 addresses. A /24 prefix length means 256 addresses are covered by this single routing entry.

Last updated: 2026-07-24 23:25:31 UTC
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