Does anyone know what is that? Are there any twins brands?
Eureka
User guide (.pdf)
"Eureka offers new opportunities for unlimited communication abroad! We offer international roaming services in over 200 countries worldwide."
SMS center +420791099999
Customer Service Center: +420 791 09 34 43
TRAVEL TELEKOMMUNIKATION s.r.o.
Dělnická 213/12, Praha 7, 170 00 Česká Republika.
It offers free incoming calls in Europe, Russia, some African countries (Sudan, Uganda ect), countries in Caribbean Sea, Australia, and cheap calls in other countries.
numberingplans.com regognized it:
Information on phone number range +420 7910XXXXX
Number billable as mobile number
Country or destination Czech Republic
Original network provider Travel Telecommunikation s.r.o.