International area code lookup

Because +1 is the shared prefix of the North American Numbering Plan: the US, Canada and several Caribbean territories all use it. Numeric queries are prefix-matched here — a full code such as +86 is an exact hit and is listed first, while partial matches follow, so always confirm the full number range before drawing conclusions.

Yes. Local times come from the browser Intl API using IANA zones such as Asia/Tokyo, so DST transitions apply automatically. Only when the browser cannot resolve that zone does the tool fall back to the standard offset recorded in the table, which ignores DST.

Against your own device time zone, read once when the page loads. The same zone shows “Same zone”; otherwise you get a value like +1h or -3.5h. Around DST switch dates the difference can differ from what you are used to.

The table has 190 countries and regions — the major ones plus common territories. A few tiny dependencies, Antarctic research stations and sub-codes that only exist inside specific number ranges are not included: this is a country/region-level dial code table, not a city-level area code database.

No. The table ships with the page and searching, matching and time-zone maths all run locally in your browser. The numbers you type are never sent anywhere.