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asn-from-ip

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This tiny module allows you to get ASN information for each IP address. The output includes IP suffixes, AS type, AS country, AS organisation and so on...

github.com/ipapi-is/ip_to_asn

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function ipToASN(n){return new Promise(function(t){fetch("https://api.ipapi.is/?q="+n).then(n=>n.json()).then(function(n){try{n&&n.asn&&t(n.asn)}catch(n){}t(null)})})}