Autonomous System
AS5588 T-Mobile Czech Republic a.s.
ISPActiveCzechiaRIPE
AS5588 (GTSCE) is an ISP network operated by T-Mobile Czech Republic a.s. in Czechia, registered with RIPE. It has 2 IPv4 prefixes with 73,728 addresses and 1 IPv6 prefix, which makes it the 2,860th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses73,728in 2 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#2,860of 82,200 active ASNs
Details
OrganizationT-Mobile Czech Republic a.s.
AS nameGTSCE
Websitet-mobile.cz
Country Czechia (CZ)
Network typeISP
RegistryRIPE
Abuse contactabuse@t-mobile.cz
Registered1970-01-01
Last updated2026-02-13
IPv4 prefixes
2 prefixes · 73,728 addresses| Network | Addresses | First – last address |
|---|---|---|
| 91.120.0.0/16 | 65,536 | 91.120.0.0 – 91.120.255.255 |
| 194.149.0.0/19 | 8,192 | 194.149.0.0 – 194.149.31.255 |
91.120.0.0/16 194.149.0.0/19
IPv6 prefixes
1 prefix- 2a00:10d0::/32
2a00:10d0::/32
Query AS5588 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=AS5588&key=YOUR_API_KEY"Any address in its prefixes resolves to AS5588, with or without a key:
curl "https://api.ipapi.is/?q=91.120.0.1"Other networks of T-Mobile Czech Republic a.s.
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