Headquarters, USAISC operates AS13: 7 IPv4 prefixes covering 79,104 addresses, most of them in 
United States.
By IPv4 addresses the network ranks #2,194 worldwide and #706 of 18,202 networks in United States.
The largest block is 128.63.0.0 to 128.63.255.255 with 65,536 addresses, geolocated to Sierra Vista (Fort Huachuca).
- IPv4 addresses
- 79,104
- IPv4 prefixes
- 7
- World rank
- #2,194
- IPv6 ranges
- 1
Addresses by country
- United States 100%
Largest blocks
- 128.63.0.0 Sierra Vista (Fort Huachuca)65,536
- 144.252.0.0 Sierra Vista (Fort Huachuca)8,192
- 204.235.64.0 Sierra Vista (Fort Huachuca)4,096
- 192.5.24.0 Sierra Vista (Fort Huachuca)512
- 192.33.13.0 Sierra Vista (Fort Huachuca)256
- 192.12.67.0 Chicago256
- 192.12.65.0 Sierra Vista (Fort Huachuca)256
Networks of similar size
79,360
79,104
79,104
78,848
78,848
78,848IPv4 prefixes
Questions and answers
Who owns AS13?
Autonomous system AS13 is operated by Headquarters, USAISC.
How many IP addresses does AS13 have?
The network holds 79,104 IPv4 addresses in 7 prefixes, plus 1 IPv6 ranges.
Which country is AS13 in?
The main country is United States.
How big is AS13?
By IPv4 addresses it ranks #2,194 worldwide.
What is the largest address block of AS13?
128.63.0.0 to 128.63.255.255, 65,536 addresses.