Luton's dialling code is 01582.
567218 is not a dialling code from the UK, which all start with zero. The dialling code for Glasgow, Scotland is 0141.
The international dialling code for mainline China is +86
0141 is Glasgow's dialling code. 952 is not a dialling code in any part of the UK.
The telephone country code for Argentina is +54. The area code for La Rioja is 03822, or +54 3822 in international format.
The dialling code from UK to Australia is 00 61.
+51
To call Spain from any GSM mobile, anywhere in the world, dial +34 and then the 9-digit Spanish number (landline or mobile).
Tenerife is part of Spain, which is country code +34. Dial your international access prefix (most commonly 00), then country code 34, then the full Spanish number (9 digits).
001
Portugal
The international dialling code for Germany is 49 So, if phoning from the UK, dial 0049