Autonomous System
AS91 Rensselaer Polytechnic Institute
EducationActiveUnited StatesARIN
AS91 (RPI-AS) is an education network operated by Rensselaer Polytechnic Institute in United States, registered with ARIN. It has 12 IPv4 prefixes with 330,496 addresses and 2 IPv6 prefixes, which makes it the 890th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses330,496in 12 prefixes
IPv6 prefixes2≈ 2.4 × 10²⁴ addresses
Size rank#890of 82,200 active ASNs
Details
OrganizationRensselaer Polytechnic Institute
AS nameRPI-AS
Websiterpi.edu
Country United States (US)
Network typeEducation
RegistryARIN
Abuse contactsecurity@rpi.edu
Registered1986-11-18
Last updated2023-01-05
IPv4 prefixes
12 prefixes · 330,496 addresses| Network | Addresses | First – last address |
|---|---|---|
| 128.113.0.0/16 | 65,536 | 128.113.0.0 – 128.113.255.255 |
| 128.213.0.0/16 | 65,536 | 128.213.0.0 – 128.213.255.255 |
| 129.5.0.0/16 | 65,536 | 129.5.0.0 – 129.5.255.255 |
| 129.161.0.0/16 | 65,536 | 129.161.0.0 – 129.161.255.255 |
| 146.8.0.0/16 | 65,536 | 146.8.0.0 – 146.8.255.255 |
| 204.76.224.0/22 | 1,024 | 204.76.224.0 – 204.76.227.255 |
| 204.76.228.0/23 | 512 | 204.76.228.0 – 204.76.229.255 |
| 192.12.91.0/24 | 256 | 192.12.91.0 – 192.12.91.255 |
| 192.12.92.0/24 | 256 | 192.12.92.0 – 192.12.92.255 |
| 204.76.222.0/24 | 256 | 204.76.222.0 – 204.76.222.255 |
| 204.76.223.0/24 | 256 | 204.76.223.0 – 204.76.223.255 |
| 204.145.205.0/24 | 256 | 204.145.205.0 – 204.145.205.255 |
128.113.0.0/16 128.213.0.0/16 129.5.0.0/16 129.161.0.0/16 146.8.0.0/16 204.76.224.0/22 204.76.228.0/23 192.12.91.0/24 192.12.92.0/24 204.76.222.0/24 204.76.223.0/24 204.145.205.0/24
IPv6 prefixes
2 prefixes- 2620:0:bf0::/48
- 2620:0:2820::/48
2620:0:bf0::/48 2620:0:2820::/48
Query AS91 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=AS91&key=YOUR_API_KEY"Any address in its prefixes resolves to AS91, with or without a key:
curl "https://api.ipapi.is/?q=128.113.0.1"Largest networks in United States
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