PHP - geoip_asnum_by_name()

The geoip_asnum_by_name() function can get the Autonomous System Numbers (ASN).

Syntax

string geoip_asnum_by_name ( string $hostname )

The geoip_asnum_by_name() function can return the Autonomous System Numbers (ASN) associated with an IP address.

The geoip_asnum_by_name() function can return the ASN on success, or false if the address can't be found in the database.

Example

<?php
   $hostname = "www.tutorialspoint.com";

   // Get the ASN from $hostname
   $asn = geoip_asnum_by_name($hostname);
    
   if($asn) {
      echo "ASN: {$asn}";
   }
?>