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International dialing code lookup

Find any country's calling code, exit and trunk prefixes, and get the exact digits to dial between two countries, with an E.164 check.

Pick two countries and type the number to get the digits.

A length match means the number is plausible for the destination, not that it exists; the bundled lengths cover fixed-line and mobile ranges, and a few countries publish none, which the result says. Carrier-dependent exit prefixes (Brazil, Colombia, Israel and others) are marked as varying rather than guessed. Italy keeps its landline leading 0, and North American numbers dial 1 plus 10 digits with no exit prefix. Letters in vanity numbers are not converted.
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