▁the ▁U . S ., ▁Canada , ▁and ▁the ▁UK ▁may ▁sub scribe ▁to ▁Von age ▁by ▁credit ▁card ▁from ▁their ▁respective ▁country , ▁but ▁the ▁Von age ▁adapter ▁can ▁be ▁connected ▁to ▁the ▁Internet ▁anywhere . ▁ ▁Us age ▁is ▁generally ▁referred ▁to ▁as ▁" un limited ", ▁though ▁Von age ▁has ▁different ▁national ▁" f air ▁use " ▁policies ▁limit ing ▁Von age - to - phone ▁calls ▁to ▁a ▁few ▁thousand ▁minutes ▁per ▁month ▁in ▁the ▁UK , ▁Canada , ▁and ▁U . S . ▁ ▁Ev idence ▁suggests ▁that ▁calls ▁are ▁limited ▁to ▁a ▁length ▁of ▁ 3 ▁hours ▁and ▁ 5 6 ▁minutes . ▁ ▁Tele phone ▁number ▁avail ability ▁Sub scri bers ▁may ▁choose ▁a ▁number ▁in ▁the ▁country ▁of ▁the ▁service ▁they ▁sub scribe ▁to ▁for ▁their ▁primary ▁line , ▁in ▁an ▁area ▁code ▁of ▁their ▁choice . ▁Sub scri bers ▁can ▁obtain ▁additional ▁" virtual ▁numbers " ▁for ▁a ▁month ly ▁fee . ▁Von age ▁also ▁offers ▁virtual ▁numbers ▁in ▁Mexico , ▁Canada ▁and ▁Europe . ▁While ▁the ▁company ▁supports ▁port ing ▁a ▁U . S . ▁tele phone ▁number ▁via ▁the ▁F CC ' s ▁local ▁number ▁port ability ▁( L NP ), ▁not ▁every ▁phone ▁number ▁is ▁available ▁in ▁every ▁area ▁code . ▁Additionally , ▁customers ▁can ▁transfer ▁an ▁existing ▁number ▁to ▁Von age , ▁which ▁can ▁take ▁up ▁to ▁ 7 ▁to ▁ 1 0 ▁business ▁days ▁from ▁the ▁time ▁the ▁customer ▁comple tes ▁the ▁Number ▁Transfer ▁Author ization ▁( N TA