California Institute of Technology operates AS31: 5 IPv4 prefixes covering 131,840 addresses, most of them in 
United States.
By IPv4 addresses the network ranks #1,498 worldwide and #462 of 18,202 networks in United States.
The largest block is 134.4.0.0 to 134.4.255.255 with 65,536 addresses, geolocated to Pasadena.
- IPv4 addresses
- 131,840
- IPv4 prefixes
- 5
- World rank
- #1,498
- IPv6 ranges
- 1
Addresses by country
- United States 100%
Largest blocks
- 134.4.0.0 Pasadena65,536
- 131.215.0.0 Pasadena65,536
- 192.41.208.0 Pasadena256
- 192.31.43.0 Pasadena256
- 192.12.19.0 Pasadena256
Networks of similar size
- AS22093 Cleveland Clinic Foundation131,840
- AS5719 State University of New York at Stony Brook131,840
- AS2013 PG&E131,840
- AS1729 Telia Company AB
131,840 - AS20337 SUNY Institute of Technology131,840
- AS2642 California Department of Technology131,840
- AS5696 Express Scripts Incorporated131,840
- AS16989 The University of Tennessee Health Science Center131,584
IPv4 prefixes
Questions and answers
Who owns AS31?
Autonomous system AS31 is operated by California Institute of Technology.
How many IP addresses does AS31 have?
The network holds 131,840 IPv4 addresses in 5 prefixes, plus 1 IPv6 ranges.
Which country is AS31 in?
The main country is United States.
How big is AS31?
By IPv4 addresses it ranks #1,498 worldwide.
What is the largest address block of AS31?
134.4.0.0 to 134.4.255.255, 65,536 addresses.