Autonomous System

AS3640 C I C E S E

EducationActiveMexicoLACNIC

AS3640 (AS3640) is an education network operated by C I C E S E in Mexico, registered with LACNIC. It has 7 IPv4 prefixes with 65,792 addresses and 2 IPv6 prefixes, which makes it the 3,430th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses65,792in 7 prefixes
IPv6 prefixes2≈ 1.9 × 10²⁵ addresses
Size rank#3,430of 82,200 active ASNs
Abuser scoreVery Lowunder 0.01% of its addresses flagged · method

Details

OrganizationC I C E S E
AS nameAS3640
Websitecicese.edu.mx
Country Mexico (MX)
Network typeEducation
RegistryLACNIC
Abuse contactjefred@cicese.edu.mx
Registered19940601
Last updated20250620

IPv4 prefixes

7 prefixes · 65,792 addresses
NetworkAddressesFirst – last address
158.97.128.0/1732,768158.97.128.0 – 158.97.255.255
158.97.0.0/1816,384158.97.0.0 – 158.97.63.255
158.97.64.0/198,192158.97.64.0 – 158.97.95.255
158.97.96.0/204,096158.97.96.0 – 158.97.111.255
158.97.112.0/212,048158.97.112.0 – 158.97.119.255
158.97.120.0/212,048158.97.120.0 – 158.97.127.255
192.84.12.0/24256192.84.12.0 – 192.84.12.255

IPv6 prefixes

2 prefixes
  • 2801:c4:f0::/45
  • 2801:c4:f8::/45

Query AS3640 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS3640&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS3640, with or without a key:

curl "https://api.ipapi.is/?q=158.97.128.1"

Largest networks in Mexico

AS8151 UNINET23,480,064 IPv4 addressesAS13999 Mega Cable, S.A. de C.V.3,072,512 IPv4 addressesAS6503 Axtel, S.A.B. de C.V.2,046,720 IPv4 addressesAS11172 Alestra, S. de R.L. de C.V.1,246,720 IPv4 addressesAS11888 Television Internacional, S.A. de C.V.824,832 IPv4 addressesAS13591 Mexico Red de Telecomunicaciones, S. de R.L. de C.V.779,776 IPv4 addresses