I have the same problem here in Hungary, the Pannon network does not allow even calls to the +354 with range 380...

My German operator (E+) does allow calls to my YackieMobile even when I´m roaming in the Pannon network, so it must be a operator issue. The same problem with SMS.

So that means, I will be not reachable from some operators networks because they see the 380... number range as premium numbers. Interesting is that my e-Mail account provider does allow sending SMS to +354380... numbers, the strange thing on this is that they officially do not offer service to this destination ... kind of weird ...

Service providers such as smsbug.com do not deliver send SMS to YackieMobile numbers, roaming SIM operators like e.g. sim4travel with +447509... numbers does not connect to YackieM., Jajah.com does not connect to YackieM., nonoh.com does connect to YackieM. last but not least the roaming service provider !GT-SIM! does connect for 29 Euro Cent to YackieM.