Autonomous System
AS25500 User Association of Ukrainian Research and Academic Network URAN
ISPActiveUkraineRIPE
AS25500 (NTUU-KPI-AS) is an ISP network operated by User Association of Ukrainian Research and Academic Network URAN in Ukraine, registered with RIPE. It has 12 IPv4 prefixes with 21,760 addresses and 1 IPv6 prefix, which makes it the 6,502nd largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses21,760in 12 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#6,502of 82,200 active ASNs
Details
OrganizationUser Association of Ukrainian Research and Academic Network URAN
AS nameNTUU-KPI-AS
Websiteuran.ua
Country Ukraine (UA)
Network typeISP
RegistryRIPE
Abuse contactabuse@kpi.ua
Registered2002-12-11
Last updated2026-02-20
IPv4 prefixes
12 prefixes · 21,760 addresses| Network | Addresses | First – last address |
|---|---|---|
| 77.47.160.0/20 | 4,096 | 77.47.160.0 – 77.47.175.255 |
| 77.47.192.0/20 | 4,096 | 77.47.192.0 – 77.47.207.255 |
| 77.47.224.0/20 | 4,096 | 77.47.224.0 – 77.47.239.255 |
| 77.47.128.0/21 | 2,048 | 77.47.128.0 – 77.47.135.255 |
| 77.47.184.0/21 | 2,048 | 77.47.184.0 – 77.47.191.255 |
| 77.47.216.0/21 | 2,048 | 77.47.216.0 – 77.47.223.255 |
| 77.47.136.0/22 | 1,024 | 77.47.136.0 – 77.47.139.255 |
| 77.47.140.0/23 | 512 | 77.47.140.0 – 77.47.141.255 |
| 77.47.176.0/23 | 512 | 77.47.176.0 – 77.47.177.255 |
| 77.47.208.0/23 | 512 | 77.47.208.0 – 77.47.209.255 |
| 77.47.214.0/23 | 512 | 77.47.214.0 – 77.47.215.255 |
| 77.47.194.0/24 | 256 | 77.47.194.0 – 77.47.194.255 |
77.47.160.0/20 77.47.192.0/20 77.47.224.0/20 77.47.128.0/21 77.47.184.0/21 77.47.216.0/21 77.47.136.0/22 77.47.140.0/23 77.47.176.0/23 77.47.208.0/23 77.47.214.0/23 77.47.194.0/24
IPv6 prefixes
1 prefix- 2a02:db0::/32
2a02:db0::/32
Query AS25500 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=AS25500&key=YOUR_API_KEY"Any address in its prefixes resolves to AS25500, with or without a key:
curl "https://api.ipapi.is/?q=77.47.160.1"Other networks of User Association of Ukrainian Research and Academic Network URAN
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