Hollywood is part of the USA, which uses country code +1
Tonga
No any
No one uses that code to dial the UK, which is country code +44, not +55. '00' is a commonly used international access prefix, and +55 is the country code for Brazil.
'hr' is the top level country domain code for Croatia.
Sweden
China.
RS is the ISO-3166-1 country code for Serbia, which thus uses the country code top-level domain .rs
The country that uses the code 211 is South Sudan. The country code 211 went into effect on October 1, 2011 for the Republic of South Sudan and was 2 months ahead of the scheduled release date.
0023 in Scientific Notation = 0.023 x 103
The French overseas territory of Wallis and Futuna uses country code +681.
Uganda