AS3527 is the autonomous system of National Institutes of Health. It holds 325,632 IPv4 addresses in 52 prefixes plus 2 IPv6 ranges, mainly in 
United States.
By IPv4 addresses the network ranks #744 worldwide and #203 of 18,202 networks in United States. That is 0.02% of the country’s IPv4 space.
The largest block is 157.98.0.0 to 157.98.255.255 with 65,536 addresses, geolocated to Durham (Research Triangle Park).
Websites found on this network include nih.gov.
- IPv4 addresses
- 325,632
- IPv4 prefixes
- 52
- World rank
- #744
- Country share
- 0.02%
- IPv6 ranges
- 2
Addresses by country
- United States 100%
Largest blocks
- 157.98.0.0 Durham (Research Triangle Park)65,536
- 137.187.0.0 Bethesda65,536
- 128.231.0.0 Bethesda65,536
- 156.40.100.0 Bethesda24,832
- 165.112.36.0 Bethesda22,528
- 156.40.0.0 Bethesda13,568
- 165.112.144.0 Bethesda12,800
- 165.112.204.0 Bethesda12,288
Websites seen on this network
Networks of similar size
- AS32475 Internap Holding LLC327,168
- AS4826 VOCUS PTY LTD
326,656 - AS21283 A1 Slovenija telekomunikacijske storitve,d.d.
325,632 - AS217 University of Minnesota325,632
- AS8047 GENERAL COMMUNICATION, INC.323,840
- AS15924 Vodafone Net Iletisim Hizmetler AS
323,840 - AS28812 PJSC "Bashinformsvyaz"
323,328 - AS20485 Joint Stock Company TransTeleCom322,304
IPv4 prefixes
- 128.231.0.0/16
- 137.187.0.0/16
- 156.40.0.0/19
- 156.40.32.0/20
- 156.40.48.0/22
- 156.40.52.0/24
- 156.40.54.0/23
- 156.40.56.0/21
- 156.40.64.0/20
- 156.40.80.0/21
- 156.40.88.0/22
- 156.40.92.0/24
- 156.40.96.0/23
- 156.40.100.0/22
- 156.40.104.0/21
- 156.40.112.0/20
- 156.40.128.0/18
- 156.40.192.0/22
- 156.40.196.0/24
- 156.40.198.0/23
- 156.40.200.0/21
- 156.40.208.0/20
- 156.40.224.0/20
- 156.40.240.0/22
- 156.40.244.0/23
- 156.40.247.0/24
- 156.40.248.0/21
- 157.98.0.0/16
- 162.99.224.0/19
- 165.112.12.0/22
- 165.112.16.0/20
- 165.112.36.0/22
- 165.112.40.0/21
- 165.112.48.0/20
- 165.112.64.0/19
- 165.112.96.0/20
- 165.112.112.0/21
- 165.112.120.0/22
- 165.112.126.0/24
- 165.112.128.0/21
- 165.112.144.0/20
- 165.112.160.0/19
- 165.112.192.0/23
- 165.112.196.0/22
- 165.112.204.0/22
- 165.112.208.0/20
- 165.112.224.0/20
- 165.112.240.0/21
- 165.112.248.0/22
- 165.112.254.0/23
- 192.231.145.0/24
- 192.231.146.0/23
Questions and answers
Who owns AS3527?
Autonomous system AS3527 is operated by National Institutes of Health.
How many IP addresses does AS3527 have?
The network holds 325,632 IPv4 addresses in 52 prefixes, plus 2 IPv6 ranges.
Which country is AS3527 in?
The main country is United States.
How big is AS3527?
By IPv4 addresses it ranks #744 worldwide.
What is the largest address block of AS3527?
157.98.0.0 to 157.98.255.255, 65,536 addresses.