Autonomous System
AS38987 Spoldzielnia Telekomunikacyjna OST
ISPActivePolandRIPE
AS38987 (OST-ASN) is an ISP network operated by Spoldzielnia Telekomunikacyjna OST in Poland, registered with RIPE. It has 4 IPv4 prefixes with 12,288 addresses and 1 IPv6 prefix, which makes it the 9,177th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses12,288in 4 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#9,177of 82,200 active ASNs
Details
OrganizationSpoldzielnia Telekomunikacyjna OST
AS nameOST-ASN
Websiteostnet.pl
Country Poland (PL)
Network typeISP
RegistryRIPE
Abuse contactabuse@ostnet.pl
Registered2005-11-23
Last updated2026-06-02
IPv4 prefixes
4 prefixes · 12,288 addresses| Network | Addresses | First – last address |
|---|---|---|
| 62.133.128.0/19 | 8,192 | 62.133.128.0 – 62.133.159.255 |
| 37.72.120.0/21 | 2,048 | 37.72.120.0 – 37.72.127.255 |
| 168.222.232.0/22 | 1,024 | 168.222.232.0 – 168.222.235.255 |
| 185.13.184.0/22 | 1,024 | 185.13.184.0 – 185.13.187.255 |
62.133.128.0/19 37.72.120.0/21 168.222.232.0/22 185.13.184.0/22
IPv6 prefixes
1 prefix- 2a02:22e0::/32
2a02:22e0::/32
Query AS38987 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=AS38987&key=YOUR_API_KEY"Any address in its prefixes resolves to AS38987, with or without a key:
curl "https://api.ipapi.is/?q=62.133.128.1"