Autonomous System
AS3527 National Institutes of Health
GovernmentActiveUnited StatesARIN
AS3527 (NIH-NET) is a government network operated by National Institutes of Health in United States, registered with ARIN. It has 15 IPv4 prefixes with 345,856 addresses and 1 IPv6 prefix, which makes it the 854th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses345,856in 15 prefixes
IPv6 prefixes1≈ 3.9 × 10²⁵ addresses
Size rank#854of 82,200 active ASNs
Details
OrganizationNational Institutes of Health
AS nameNIH-NET
Websitemail.nih.gov
Country United States (US)
Network typeGovernment
RegistryARIN
Abuse contactcitnsarin@mail.nih.gov
Registered1994-04-07
Last updated2022-10-28
IPv4 prefixes
15 prefixes · 345,856 addresses| Network | Addresses | First – last address |
|---|---|---|
| 128.231.0.0/16 | 65,536 | 128.231.0.0 – 128.231.255.255 |
| 137.187.0.0/16 | 65,536 | 137.187.0.0 – 137.187.255.255 |
| 156.40.0.0/16 | 65,536 | 156.40.0.0 – 156.40.255.255 |
| 157.98.0.0/16 | 65,536 | 157.98.0.0 – 157.98.255.255 |
| 165.112.0.0/16 | 65,536 | 165.112.0.0 – 165.112.255.255 |
| 162.99.224.0/19 | 8,192 | 162.99.224.0 – 162.99.255.255 |
| 165.112.0.0/20 | 4,096 | 165.112.0.0 – 165.112.15.255 |
| 165.112.0.0/21 | 2,048 | 165.112.0.0 – 165.112.7.255 |
| 165.112.136.0/21 | 2,048 | 165.112.136.0 – 165.112.143.255 |
| 192.231.146.0/23 | 512 | 192.231.146.0 – 192.231.147.255 |
| 128.231.3.0/24 | 256 | 128.231.3.0 – 128.231.3.255 |
| 128.231.245.0/24 | 256 | 128.231.245.0 – 128.231.245.255 |
| 192.231.145.0/24 | 256 | 192.231.145.0 – 192.231.145.255 |
| 192.231.146.0/24 | 256 | 192.231.146.0 – 192.231.146.255 |
| 192.231.147.0/24 | 256 | 192.231.147.0 – 192.231.147.255 |
128.231.0.0/16 137.187.0.0/16 156.40.0.0/16 157.98.0.0/16 165.112.0.0/16 162.99.224.0/19 165.112.0.0/20 165.112.0.0/21 165.112.136.0/21 192.231.146.0/23 128.231.3.0/24 128.231.245.0/24 192.231.145.0/24 192.231.146.0/24 192.231.147.0/24
IPv6 prefixes
1 prefix- 2607:f220:400::/43
2607:f220:400::/43
Query AS3527 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS3527&key=YOUR_API_KEY"Any address in its prefixes resolves to AS3527, with or without a key:
curl "https://api.ipapi.is/?q=128.231.0.1"Largest networks in United States
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