University of Rochester operates AS20: 3 IPv4 prefixes covering 66,048 addresses, most of them in 
United States.
By IPv4 addresses the network ranks #2,696 worldwide and #876 of 18,202 networks in United States.
The largest block is 128.151.0.0 to 128.151.255.255 with 65,536 addresses, geolocated to Rochester.
- IPv4 addresses
- 66,048
- IPv4 prefixes
- 3
- World rank
- #2,696
- IPv6 ranges
- 1
Addresses by country
- United States 100%
Largest blocks
- 128.151.0.0 Rochester65,536
- 199.89.214.0 Rochester256
- 192.5.53.0 Rochester256
Networks of similar size
- AS18777 Texas State University66,048
- AS21491 Uganda Telecom
66,048 - AS150359 Cable Television TOYAMA Inc.
66,048 - AS102 U.S. National Science Foundation66,048
- AS77 Johns Hopkins University Applied Physics Laboratory66,048
- AS55194 Bowling Green State University66,048
- AS7276 University of Houston66,048
- AS7050 University of Wisconsin - Milwaukee66,048
IPv4 prefixes
Questions and answers
Who owns AS20?
Autonomous system AS20 is operated by University of Rochester.
How many IP addresses does AS20 have?
The network holds 66,048 IPv4 addresses in 3 prefixes, plus 1 IPv6 ranges.
Which country is AS20 in?
The main country is United States.
How big is AS20?
By IPv4 addresses it ranks #2,696 worldwide.
What is the largest address block of AS20?
128.151.0.0 to 128.151.255.255, 65,536 addresses.