use ArrayAccess\DnsRecord\Cache\Adapter\Psr6CacheAdapter; use ArrayAccess\DnsRecord\DnsServerStorage; use ArrayAccess\DnsRecord\Resolver; $cache = new Psr6CacheAdapter(); // $cache->setCacheItemPool($cacheProvider); $dnsServer = DnsServerStorage::createDefault(); $resolver = new Resolver($dnsServer, $cache); /**  * Lookup Single   */ $useCache = true; // default to true $timeout = 3.5; // 3.5 seconds $response = $resolver->lookup('domain-name.ext', 'A', 'IN', $timeout, $useCache); /**  * Enable Pseudo OPT   */ $resolver->setDnsSec(true); $response = $resolver->lookup('domain-name.ext', 'A', 'IN'); $answers = $response->getAnswers(); $records = $answers->getRecords(); // Filter "A" Address Only $arrayA = $records->getFilteredType('A');