University of Southern California operates AS4: 15 IPv4 prefixes covering 66,304 addresses, most of them in 
United States.
By IPv4 addresses the network ranks #2,660 worldwide and #852 of 18,202 networks in United States.
The network spreads across 2 countries: United States 99%, Brazil 0.77%.
The largest block is 128.9.28.0 to 128.9.255.255 with 58,368 addresses, geolocated to Marina del Rey.
- IPv4 addresses
- 66,304
- IPv4 prefixes
- 15
- World rank
- #2,660
- IPv6 ranges
- 3
Addresses by country
- United States 99%
Brazil 0.77%
Largest blocks
- 128.9.28.0 Marina del Rey58,368
- 128.9.0.0 Marina del Rey5,120
- 165.140.12.0 San Jose (Edenvale)768
- 170.79.218.0 Bayeux512
- 206.117.37.0 San Jose256
- 206.117.31.0 Sunnyvale256
- 206.117.27.0 Sunnyvale256
- 206.117.6.0 Sunnyvale256
Networks of similar size
- AS46093 Palm Beach County66,304
- AS11872 Syracuse University66,304
- AS20590 Donbass Electronic Communications Ltd.
66,304 - AS150363 SoftEther Corporation
66,304 - AS194 University Corporation for Atmospheric Research66,304
- AS32666 Case Western Reserve University66,304
- AS7212 Vanderbilt University66,304
- AS24014 Bond University Limited
66,304
IPv4 prefixes
Questions and answers
Who owns AS4?
Autonomous system AS4 is operated by University of Southern California.
How many IP addresses does AS4 have?
The network holds 66,304 IPv4 addresses in 15 prefixes, plus 3 IPv6 ranges.
Which country is AS4 in?
The main country is United States, with addresses in 1 more countries.
How big is AS4?
By IPv4 addresses it ranks #2,660 worldwide.
What is the largest address block of AS4?
128.9.28.0 to 128.9.255.255, 58,368 addresses.