U.S. House of Representatives operates AS1999: 5 IPv4 prefixes covering 197,376 addresses, most of them in 
United States.
By IPv4 addresses the network ranks #1,088 worldwide and #319 of 18,202 networks in United States. That is 0.01% of the country’s IPv4 space.
The largest block is 143.231.0.0 to 143.231.255.255 with 65,536 addresses, geolocated to Washington D.C. (Southwest Washington).
- IPv4 addresses
- 197,376
- IPv4 prefixes
- 5
- World rank
- #1,088
- Country share
- 0.01%
- IPv6 ranges
- 1
Addresses by country
- United States 100%
Largest blocks
- 143.231.0.0 Washington D.C. (Southwest Washington)65,536
- 143.228.0.0 Washington D.C. (Southwest Washington)65,536
- 137.18.0.0 Washington D.C. (Southwest Washington)65,536
- 74.119.130.0 New York512
- 74.119.128.0 New York256
Networks of similar size
- AS46 Rutgers, The State University197,632
- AS8111 Dalhousie University
197,632 - AS11442 North Carolina State University197,632
- AS2637 Georgia Institute of Technology197,376
- AS26 Cornell University197,376
- AS1945 Renater
197,120 - AS23859 Australian Academic and Research Network
196,864 - AS40831 Partners HealthCare System Inc.196,864
IPv4 prefixes
Questions and answers
Who owns AS1999?
Autonomous system AS1999 is operated by U.S. House of Representatives.
How many IP addresses does AS1999 have?
The network holds 197,376 IPv4 addresses in 5 prefixes, plus 1 IPv6 ranges.
Which country is AS1999 in?
The main country is United States.
How big is AS1999?
By IPv4 addresses it ranks #1,088 worldwide.
What is the largest address block of AS1999?
143.231.0.0 to 143.231.255.255, 65,536 addresses.