AS21520 Instituto Tecnologico Autonomo de MexicoITAM

Not flagged: treated as regular traffic

AS21520 is not on Fraudex's VPN, proxy and datacenter list, so its IPs are treated like ordinary home, mobile or business connections. A single address can still be flagged if it is a Tor exit relay.

CountryMexico
IPv4 ranges14
IPv4 addresses19,456
IPv6 ranges0
Tor exits now0

Check an IP from AS21520

Look up any address in real time with the free IP checker, or from your own code:

curl "https://fraudex.xyz/api/check?ip=148.205.36.0" \
  -H "X-API-Key: fx_your_key"

The answer includes the network (AS21520), the country and a VPN, proxy, Tor and bot verdict, in under a millisecond. Plans start at $40 for 30 days of unlimited lookups.

IPv4 ranges announced by AS21520

First IPLast IPCIDRAddresses
148.205.36.0148.205.43.255148.205.36.0/22, 148.205.40.0/222,048
148.205.48.0148.205.51.255148.205.48.0/221,024
148.205.56.0148.205.75.255148.205.56.0/21, 148.205.64.0/21, 148.205.72.0/225,120
148.205.89.0148.205.90.255148.205.89.0/24, 148.205.90.0/24512
148.205.104.0148.205.111.255148.205.104.0/212,048
148.205.120.0148.205.120.255148.205.120.0/24256
148.205.132.0148.205.139.255148.205.132.0/22, 148.205.136.0/222,048
148.205.148.0148.205.151.255148.205.148.0/221,024
148.205.164.0148.205.167.255148.205.164.0/221,024
148.205.176.0148.205.179.255148.205.176.0/221,024
148.205.193.0148.205.193.255148.205.193.0/24256
148.205.196.0148.205.199.255148.205.196.0/221,024
148.205.228.0148.205.231.255148.205.228.0/221,024
148.205.236.0148.205.239.255148.205.236.0/221,024

Questions about AS21520

Is AS21520 a VPN or hosting network?

Fraudex does not list AS21520 (Instituto Tecnologico Autonomo de MexicoITAM) as a VPN, proxy or hosting network. Its addresses are treated as regular traffic, apart from any Tor exit relays.

Which country is AS21520 registered in?

AS21520 is registered in Mexico. Individual addresses can be used elsewhere, so check the IP itself when location matters.

How many IP addresses does AS21520 have?

It announces 14 IPv4 ranges with 19,456 addresses in total.

How do I block traffic from AS21520?

Blocking a whole network by number goes stale as ranges change hands. It is more reliable to check each visitor's IP when they sign up, log in or pay: the Fraudex API returns the network and a VPN and bot verdict, so you can block, challenge or just log flagged traffic. See why an IP blocking API pays for itself.

Other large networks in Mexico

All networks in Mexico →