191.240.37.0/24 subnet

IPv4 /24 block

191.240.37.0/24 is a block of 256 IPv4 addresses announced by AS28202 (MASTER S/A), located mainly in Brazil. IPDebrief has analysed 16 addresses in this block; 13 currently carry a higher risk score. Overall the neighbourhood is assessed as clean.

Updated 7 November 2026

Analysed: 16
Higher risk: 13
Hosting / datacenter: 0
VPN, proxy or Tor: 0
With reverse DNS: 16

Analysed addresses in 191.240.37.0/24

13 higher risk2 moderate1 low

191.240.37.3191-240-37-3.mal-wr.mastercabo.com · risk 80
191.240.37.10191-240-37-10.mal-wr.mastercabo.com · risk 80
191.240.37.22191-240-37-22.mal-wr.mastercabo.com · risk 70
191.240.37.24191-240-37-24.mal-wr.mastercabo.com · risk 80
191.240.37.29191-240-37-29.mal-wr.mastercabo.com · risk 80
191.240.37.46191-240-37-46.mal-wr.mastercabo.com · risk 40
191.240.37.47191-240-37-47.mal-wr.mastercabo.com · risk 80
191.240.37.48191-240-37-48.mal-wr.mastercabo.com · risk 80
191.240.37.49191-240-37-49.mal-wr.mastercabo.com · risk 80
191.240.37.91191-240-37-91.mal-wr.mastercabo.com · risk 80
191.240.37.120191-240-37-120.mal-wr.mastercabo.com · risk 80
191.240.37.148191-240-37-148.mal-wr.mastercabo.com · risk 40
191.240.37.152191-240-37-152.mal-wr.mastercabo.com · risk 80
191.240.37.162191-240-37-162.mal-wr.mastercabo.com · risk 80
191.240.37.177191-240-37-177.mal-wr.mastercabo.com · risk 30
191.240.37.217191-240-37-217.mal-wr.mastercabo.com · risk 70

Related networks

About this block

A /24 is the smallest IPv4 block normally routed on the internet, so the 256 addresses inside it usually share one operator and purpose. Looking at a whole block shows whether a single suspicious address is an outlier or part of a pattern: a block where many addresses carry abuse reports, hosting infrastructure or anonymising services deserves more caution than one with a single flagged address.

Only addresses IPDebrief has analysed are listed. Each links to its full profile with ownership, routing, reverse DNS and risk evidence.