AS399 is the autonomous system of Air Force Systems Networking. It holds 152,576 IPv4 addresses in 7 prefixes, mainly in 
United States.
By IPv4 addresses the network ranks #1,292 worldwide and #385 of 18,202 networks in United States. That is 0.01% of the country’s IPv4 space.
The largest block is 131.49.0.0 to 131.49.255.255 with 65,536 addresses, geolocated to Montgomery.
- IPv4 addresses
- 152,576
- IPv4 prefixes
- 7
- World rank
- #1,292
- Country share
- 0.01%
Addresses by country
- United States 100%
Largest blocks
- 131.49.0.0 Montgomery65,536
- 131.38.0.0 Montgomery65,536
- 143.156.192.0 Montgomery8,192
- 143.146.192.0 Montgomery8,192
- 143.157.80.0 Montgomery2,048
- 143.147.80.0 Montgomery2,048
- 132.3.0.0 Honolulu1,024
Networks of similar size
152,832
152,832
152,576
152,576
152,064IPv4 prefixes
Questions and answers
Who owns AS399?
Autonomous system AS399 is operated by Air Force Systems Networking.
How many IP addresses does AS399 have?
The network holds 152,576 IPv4 addresses in 7 prefixes.
Which country is AS399 in?
The main country is United States.
How big is AS399?
By IPv4 addresses it ranks #1,292 worldwide.
What is the largest address block of AS399?
131.49.0.0 to 131.49.255.255, 65,536 addresses.