Autonomous System
AS21111 Ministerstwo Rozwoju i Technologii
GovernmentActivePolandRIPE
AS21111 (CISG) is a government network operated by Ministerstwo Rozwoju i Technologii in Poland, registered with RIPE. It has 7 IPv4 prefixes with 67,072 addresses, which makes it the 3,214th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses67,072in 7 prefixes
IPv6 prefixes0none
Size rank#3,214of 82,200 active ASNs
Details
OrganizationMinisterstwo Rozwoju i Technologii
AS nameCISG
Websitegov.pl
Country Poland (PL)
Network typeGovernment
RegistryRIPE
Abuse contactnetadmin@mrit.gov.pl
Registered1970-01-01
Last updated2025-11-20
IPv4 prefixes
7 prefixes · 67,072 addresses| Network | Addresses | First – last address |
|---|---|---|
| 158.66.0.0/16 | 65,536 | 158.66.0.0 – 158.66.255.255 |
| 158.66.1.0/24 | 256 | 158.66.1.0 – 158.66.1.255 |
| 158.66.2.0/24 | 256 | 158.66.2.0 – 158.66.2.255 |
| 158.66.4.0/24 | 256 | 158.66.4.0 – 158.66.4.255 |
| 158.66.5.0/24 | 256 | 158.66.5.0 – 158.66.5.255 |
| 158.66.6.0/24 | 256 | 158.66.6.0 – 158.66.6.255 |
| 158.66.7.0/24 | 256 | 158.66.7.0 – 158.66.7.255 |
158.66.0.0/16 158.66.1.0/24 158.66.2.0/24 158.66.4.0/24 158.66.5.0/24 158.66.6.0/24 158.66.7.0/24
IPv6 prefixes
No IPv6 prefixes.
Query AS21111 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=AS21111&key=YOUR_API_KEY"Any address in its prefixes resolves to AS21111, with or without a key:
curl "https://api.ipapi.is/?q=158.66.0.1"