in EC2 I can't access specific web site.

If you are using Route53 as your DNS service, you may want to check if you have configured your Route53 correctly? In particular take a look at CNAME record type in Route53 - https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/ResourceRecordTypes.html, because the sub-domain that is not working search.shopping.naver.com may not have a DNS entry.