Autonomous System
AS17055 University of Utah
EducationActiveUnited StatesARIN
AS17055 (UTAH) is an education network operated by University of Utah in United States, registered with ARIN. It has 17 IPv4 prefixes with 403,200 addresses and 1 IPv6 prefix, which makes it the 774th largest of 82,283 active autonomous systems by IPv4 space.
IPv4 addresses403,200in 17 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#774of 82,283 active ASNs
Details
OrganizationUniversity of Utah
AS nameUTAH
Websiteutah.edu
Country United States (US)
Network typeEducation
RegistryARIN
Abuse contacthostmaster@utah.edu
Registered2000-07-18
Last updated2025-10-30
IPv4 prefixes
17 prefixes · 403,200 addresses| Network | Addresses | First – last address |
|---|---|---|
| 128.110.0.0/16 | 65,536 | 128.110.0.0 – 128.110.255.255 |
| 155.97.0.0/16 | 65,536 | 155.97.0.0 – 155.97.255.255 |
| 155.98.0.0/16 | 65,536 | 155.98.0.0 – 155.98.255.255 |
| 155.99.0.0/16 | 65,536 | 155.99.0.0 – 155.99.255.255 |
| 155.100.0.0/16 | 65,536 | 155.100.0.0 – 155.100.255.255 |
| 155.101.0.0/16 | 65,536 | 155.101.0.0 – 155.101.255.255 |
| 155.98.32.0/20 | 4,096 | 155.98.32.0 – 155.98.47.255 |
| 128.110.216.0/21 | 2,048 | 128.110.216.0 – 128.110.223.255 |
| 128.110.96.0/22 | 1,024 | 128.110.96.0 – 128.110.99.255 |
| 128.110.152.0/22 | 1,024 | 128.110.152.0 – 128.110.155.255 |
| 128.110.100.0/24 | 256 | 128.110.100.0 – 128.110.100.255 |
| 128.110.156.0/24 | 256 | 128.110.156.0 – 128.110.156.255 |
| 155.99.144.0/24 | 256 | 155.99.144.0 – 155.99.144.255 |
| 155.101.66.0/24 | 256 | 155.101.66.0 – 155.101.66.255 |
| 192.5.12.0/24 | 256 | 192.5.12.0 – 192.5.12.255 |
| 199.104.93.0/24 | 256 | 199.104.93.0 – 199.104.93.255 |
| 204.99.128.0/24 | 256 | 204.99.128.0 – 204.99.128.255 |
128.110.0.0/16 155.97.0.0/16 155.98.0.0/16 155.99.0.0/16 155.100.0.0/16 155.101.0.0/16 155.98.32.0/20 128.110.216.0/21 128.110.96.0/22 128.110.152.0/22 128.110.100.0/24 128.110.156.0/24 155.99.144.0/24 155.101.66.0/24 192.5.12.0/24 199.104.93.0/24 204.99.128.0/24
IPv6 prefixes
1 prefix- 2604:c340::/32
2604:c340::/32
Query AS17055 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=AS17055&key=YOUR_API_KEY"Any address in its prefixes resolves to AS17055, with or without a key:
curl "https://api.ipapi.is/?q=128.110.0.1"Largest networks in United States
AS749 United States Department of Defense (DoD)227,398,912 IPv4 addressesAS16509 Amazon.com, Inc.218,475,264 IPv4 addressesAS7018 AT&T Enterprises, LLC117,261,568 IPv4 addressesAS8075 Microsoft Corporation81,463,040 IPv4 addressesAS721 United States Department of Defense (DoD)72,987,904 IPv4 addressesAS7922 Comcast Cable Communications, LLC68,337,152 IPv4 addresses