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CIDR Range

103.139.131.128/26

64 IPs /26 Zayo Bandwidth AS6461 Singapore APNIC
Addresses
64
64
IP Range
103.139.131.128
→ 103.139.131.191
Sub-ranges
7+
within this block
PTR Density
100.0%
64 of 64 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.

70/100
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 103.139.131.128/26

CIDRIPsOrganizationASNCountry
103.139.131.160/27 32 Zayo Bandwidth AS6461 SG
103.139.131.144/28 16 Zayo Bandwidth AS6461 SG
103.139.131.136/29 8 Zayo Bandwidth AS6461 SG
103.139.131.132/30 4 Zayo Bandwidth AS6461 SG
103.139.131.130/31 2 Zayo Bandwidth AS6461 AU
103.139.131.128 1 Zayo Bandwidth AS6461 JP
103.139.131.129 1 Zayo Bandwidth AS6461 SG

Geolocation

All 64 IP addresses in 103.139.131.128/26

103.139.131.128 103.139.131.129 103.139.131.130 103.139.131.131 103.139.131.132 103.139.131.133 103.139.131.134 103.139.131.135 103.139.131.136 103.139.131.137 103.139.131.138 103.139.131.139 103.139.131.140 103.139.131.141 103.139.131.142 103.139.131.143 103.139.131.144 103.139.131.145 103.139.131.146 103.139.131.147 103.139.131.148 103.139.131.149 103.139.131.150 103.139.131.151 103.139.131.152 103.139.131.153 103.139.131.154 103.139.131.155 103.139.131.156 103.139.131.157 103.139.131.158 103.139.131.159 103.139.131.160 103.139.131.161 103.139.131.162 103.139.131.163 103.139.131.164 103.139.131.165 103.139.131.166 103.139.131.167 103.139.131.168 103.139.131.169 103.139.131.170 103.139.131.171 103.139.131.172 103.139.131.173 103.139.131.174 103.139.131.175 103.139.131.176 103.139.131.177 103.139.131.178 103.139.131.179 103.139.131.180 103.139.131.181 103.139.131.182 103.139.131.183 103.139.131.184 103.139.131.185 103.139.131.186 103.139.131.187 103.139.131.188 103.139.131.189 103.139.131.190 103.139.131.191

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 103.139.130.0/23.

Announced prefix
103.139.130.0/23
Origin AS
AS6461
Announcement samples
11,038
Last seen
2026-07-24 10:27:29

Frequently Asked Questions

What is 103.139.131.128/26?

103.139.131.128/26 is a CIDR network block containing 64 IPv4 addresses (from 103.139.131.128 to 103.139.131.191). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 103.139.131.128/26 network?

The 103.139.131.128/26 range is allocated to Zayo Bandwidth and announced via AS6461 from Singapore.

How many IP addresses are in 103.139.131.128/26?

103.139.131.128/26 contains exactly 64 usable IPv4 addresses. A /26 prefix length means 64 addresses are covered by this single routing entry.

Last updated: 2026-07-24 11:10:36 UTC
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