Autonomous System
AS25248 RADIOKOMUNIKACE a.s.
ISPActiveCzechiaRIPE
AS25248 (BlueTone-AS) is an ISP network operated by RADIOKOMUNIKACE a.s. in Czechia, registered with RIPE. It has 5 IPv4 prefixes with 106,752 addresses and 2 IPv6 prefixes, which makes it the 2,245th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses106,752in 5 prefixes
IPv6 prefixes2≈ 7.9 × 10²⁸ addresses
Size rank#2,245of 82,200 active ASNs
Details
OrganizationRADIOKOMUNIKACE a.s.
AS nameBlueTone-AS
Websitecra.cz
Country Czechia (CZ)
Network typeISP
RegistryRIPE
Abuse contactabuse@bluetone.cz
Registered2002-09-20
Last updated2026-09-02
IPv4 prefixes
5 prefixes · 106,752 addresses| Network | Addresses | First – last address |
|---|---|---|
| 85.207.0.0/16 | 65,536 | 85.207.0.0 – 85.207.255.255 |
| 82.99.128.0/18 | 16,384 | 82.99.128.0 – 82.99.191.255 |
| 84.244.64.0/18 | 16,384 | 84.244.64.0 – 84.244.127.255 |
| 212.158.128.0/19 | 8,192 | 212.158.128.0 – 212.158.159.255 |
| 193.32.56.0/24 | 256 | 193.32.56.0 – 193.32.56.255 |
85.207.0.0/16 82.99.128.0/18 84.244.64.0/18 212.158.128.0/19 193.32.56.0/24
IPv6 prefixes
2 prefixes- 2a02:a40::/32
- 2001:67c:2100::/48
2a02:a40::/32 2001:67c:2100::/48
Query AS25248 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=AS25248&key=YOUR_API_KEY"Any address in its prefixes resolves to AS25248, with or without a key:
curl "https://api.ipapi.is/?q=85.207.0.1"Largest networks in Czechia
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