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 775th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses403,200in 17 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#775of 82,200 active ASNs
Details
OrganizationUniversity of Utah
AS nameUTAH
Websiteutah.edu
Country United States (US)
Network typeEducation
RegistryARIN
Abuse contactabuse@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
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