The calling code 0042 is not currently assigned to any country. It was previously used by Czechoslovakia before its dissolution in 1993. After that, the country codes for the Czech Republic and Slovakia were assigned as +420 and +421, respectively. If you're seeing the code 0042, it may be an outdated reference or a misinterpretation.
Germany is country code +49.
Country code +354 is Iceland.
Colombia is country code +57.
0042 used to be reserved for Czechoslovakia, however since 1997 this is no longer used.00420 is Czech Republic00421 is Slovakia00423 is Liechtenstein
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The country calling code for Germany is 49. So 010 49 from the US.
Qatar is telephone country code +974.
Country code +357 is Cyprus.
No such code. +1 is the country code for America The calling code is therefore the three digits beginning with 60 in this case.
The International country calling code of Slovakia is +421.
The country code for Sweden is +46, no matter where you're calling from.
0021 is not the country code for England. England uses the United Kingdom country code +44 which is dialled as 00 44 from most of Europe or 011 44 from North America.