Find ISO 3166 alpha-2, alpha-3, and international dialing codes.
Country Code Reference works entirely in the browser tab. Open it, use it, close it. Nothing about the session outlives the page.
The page holds your input in memory and nowhere else. No cookie stores it, no request sends it, and a reload wipes it.
You will find it under Reference, alongside 14 other tools for the same sort of job.
Covers 50+ countries with search by name, ISO code, or phone prefix.
japan
ISO2 ISO3 Phone Country -------------------------------------------------- JP JPN +81 Japan
+49
ISO2 ISO3 Phone Country -------------------------------------------------- DE DEU +49 Germany
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No. Reload the page and it starts from nothing. There is no account, no saved state and no cookie holding your last session. That is a deliberate trade: it cannot lose your data because it never keeps any.
Timing comes from performance.now(), the high resolution clock the browser provides, rather than from setInterval, which drifts by a few milliseconds every tick and compounds over minutes. What can still shift things is the browser throttling a tab in the background, so leave it visible if the timing matters.
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