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- var ipRegex = /^(?:(?:2[0-4]\d|25[0-5]|1\d{2}|[1-9]?\d)\.){3}(?:2[0-4]\d|25[0-5]|1\d{2}|[1-9]?\d)$/;
- if (!ipRegex.test(input)) {
- console.log('not type of ipv4 ');
- }
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