Mobile operatorCzech Republicofficial site reviewed September 2026

T-Mobile Czech Republic · Czech Republic

T-Mobile Czech Republic is a mobile network operator in the Czech Republic and part of Deutsche Telekom. The registry records AS13036 as the ASN carrying its mobile network, with seven further ASNs held for fixed-line and undocumented roles. Its mobile country and network codes are 230-01 and 230-07. It runs 4G LTE and 5G.

CountryCzech Republic (CZ)
Parent groupDeutsche Telekom
MCC / MNC230-01, 230-07
Network generations4G LTE, 5G
ASNs listed8 (8 confirmed)
Announced prefixes at probe65 on 2026-09-06

Autonomous systems

Holder names and prefix counts come from the RIPE NCC's RIPEstat Data API, fetched on 2026-09-06. Role and confidence come from the evidence linked in each row; "confirmed" means a PeeringDB or RIPEstat record, or the operator's own site, names the operator.

ASNHolder (RIPEstat)RoleAnnouncedIPv4 / IPv6 prefixesEvidence
AS13036TMOBILE-CZ T-Mobile Czech Republic a.s.
PeeringDB: T-Mobile CZ AS13036 · NSP
Mobile network
confirmed
yes34 / 3source · RIPEstat · PeeringDB
AS2819GTSCZ T-Mobile Czech Republic a.s.Fixed-line
confirmed
no0 / 0source · RIPEstat
AS5588GTSCE T-Mobile Czech Republic a.s.Fixed-line
confirmed
yes23 / 2source · RIPEstat
AS12767PRAGONET-AS T-Mobile Czech Republic a.s.
PeeringDB: T-Systems CZ · NSP
Fixed-line
confirmed
no0 / 0source · RIPEstat · PeeringDB
AS15485GTSNOVERA T-Mobile Czech Republic a.s.Fixed-line
confirmed
no0 / 0source · RIPEstat
AS21142PRAGONET-TRANSIT-AS T-Mobile Czech Republic a.s.
PeeringDB: T-Mobile CZ AS21142
Fixed-line
confirmed
no0 / 0source · RIPEstat · PeeringDB
AS48574ASN-CZ-PLANET-A-48574 T-Mobile Czech Republic a.s.Role not documented
confirmed
yes3 / 0source · RIPEstat
AS50491ASN-CZ-PLANET-A-50491 T-Mobile Czech Republic a.s.Role not documented
confirmed
no0 / 0source · RIPEstat

Mobile network codes

The MCC identifies the country and the MNC identifies the operator inside it. Together they appear in the IMSI of every SIM on the network and in device diagnostics; they are how a handset knows which network it is on.

MCC 230 · MNC 01MCC 230 · MNC 07

About T-Mobile Czech Republic

The registry lists eight ASNs held by T-Mobile Czech Republic. AS13036 is the mobile-carrying ASN, and at the last probe it announced 34 IPv4 prefixes against 3 IPv6 prefixes; PeeringDB records it as T-Mobile CZ AS13036 with an NSP information type, and RIPE whois describes it as a fixed and mobile service provider. AS5588, a legacy GTS backbone ASN, announced 23 IPv4 and 2 IPv6 prefixes. AS48574 announced 3 IPv4 prefixes and no IPv6. AS2819, AS12767, AS15485, AS21142 and AS50491 announced nothing, though PeeringDB holds records for AS12767 as T-Systems CZ and AS21142 as T-Mobile CZ AS21142.

An address whose origin ASN is AS13036 is routed by T-Mobile Czech Republic on the ASN the registry marks as mobile, so mobile is the likely fit, though the same ASN also carries the operator's fixed customers and the origin ASN alone does not settle it. AS5588 is recorded as fixed-line, so an address there is more likely a wholesale or business circuit. AS48574 has no documented role, so an address originating from it could be mobile, fixed or enterprise. The five ASNs that announce no prefixes have no live addresses to classify.

Research note. AS13036 (TMOBILE-CZ): PeeringDB name 'T-Mobile CZ AS13036', website t-mobile.cz, info_type NSP; RIPE whois remarks 'Fix/Mobile Service provider'; RIPEstat announced. AS5588 (GTSCE, ex-GTS Central Europe): PeeringDB 'T-Mobile CZ AS5588', NSP, notes 'closed'; RIPEstat announced; legacy GTS fixed/wholesale backbone. AS2819 (GTSCZ), 15485 (GTSNOVERA), 12767/21142 (PRAGONET) are ex-GTS/Pragonet fixed-line ASNs held by T-Mobile CZ per RIPEstat, all not announced. AS48574 announced and AS50491 not announced (ex-Planet A cable ISP, role unknown). MNC 230-01 is the consumer network (GSM 900, LTE 800/1800/2100/2600, 5G 700/1800/2100); 230-07 is former ASTELNET LTE 800 held by T-Mobile. Parent: t-mobile.cz contact page states 'Jsme součástí mezinárodního koncernu Deutsche Telekom'. 5G page: coverage expanded to more than a quarter of population; LTE-compatible SIM required.

Checking whether an IP belongs to T-Mobile Czech Republic

Look up the origin ASN of the address and compare it with the table above. RIPEstat answers for any address, and the RADB whois mirror lists the routes registered under an ASN.

Origin ASN of an address
curl -s "https://stat.ripe.net/data/prefix-overview/data.json?resource=203.0.113.9" | jq '.data.asns'
Routes registered under AS13036
whois -h whois.radb.net -- '-i origin AS13036' | grep ^route

Questions

What is T-Mobile Czech Republic's ASN?

AS13036 is the ASN the registry records as carrying T-Mobile Czech Republic's mobile network. The operator holds seven more ASNs, most of them legacy GTS and Pragonet fixed-line numbers, and only AS5588 and AS48574 announce prefixes alongside AS13036.

What is the MCC/MNC of T-Mobile Czech Republic?

The registry lists two rows under mobile country code 230, with MNCs 01 and 07. MNC 01 is the consumer network, running GSM 900, LTE on 800, 1800, 2100 and 2600, and 5G on 700, 1800 and 2100. MNC 07 is a former ASTELNET LTE 800 code held by T-Mobile.

Is an IP from AS13036 a mobile IP?

It is routed by T-Mobile Czech Republic, and the registry marks AS13036 as the mobile-carrying ASN, so a handset address is a reasonable reading. RIPE whois describes the ASN as a fixed and mobile service provider, so the same number also carries fixed connections and the ASN alone does not prove access type.

Sources

Mobile proxies in the Czech Republic
Real 4G/5G and residential IPs on Czech Republic carriers, pay per GB, endpoints free.
Other operators in the Czech Republic
O2 Czech RepublicVodafone Czech Republic
Deutsche Telekom elsewhere
Magenta Telekom · ATT-Mobile Polska · PL