{"id":60,"date":"2023-10-06T08:39:39","date_gmt":"2023-10-06T08:39:39","guid":{"rendered":"https:\/\/new.hostitsmart.com\/manage\/knowledgebase\/?p=60"},"modified":"2023-10-06T13:42:33","modified_gmt":"2023-10-06T13:42:33","slug":"What-is-a-PTR-record","status":"publish","type":"post","link":"https:\/\/new.hostitsmart.com\/manage\/knowledgebase\/60\/What-is-a-PTR-record.html","title":{"rendered":"What is a PTR record?"},"content":{"rendered":"
\n You can think of the PTR record as an opposite of the A record. While the A record points a domain name to an IP address, the PTR record resolves the IP address to a domain\/hostname.<\/span><\/p>\n

PTR records are used for the reverse DNS (Domain Name System) lookup. Using the IP address you can get the associated domain\/hostname. An A record should exist for every PTR record.<\/span><\/p>\n

The usage of a reverse DNS setup for a mail server is a good solution. Some external mail exchange servers make reverse DNS lookups before accepting messages originating from your mail server.<\/span><\/p>\n

You can check whether there is a PTR record set for a defined IP address. The syntax of the commands on a Linux OS are:<\/span><\/p>\n

dig -x IP<\/span><\/p>\n

or<\/span><\/p>\n

host IP<\/span>
\nThere can be only one PTR record per IP address. Multiple PTR records can not be set for one IP.<\/span><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

You can think of the PTR record as an opposite of the A record. While the A record points a domain name to an IP address, the PTR record resolves the IP address to a domain\/hostname. PTR records are used for the reverse DNS (Domain Name System) lookup. Using the IP address you can get […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-60","post","type-post","status-publish","format-standard","hentry","category-domain-dns-queries"],"yoast_head":"\nWhat is a PTR record?<\/title>\n<meta name=\"description\" content=\"PTR records are used for the reverse DNS (Domain Name System) lookup. Using the IP address, you can get the associated domain\/hostname. 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