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A DNS PTR record is used for reverse DNS lookups, and it matches domain names with IP addresses. Learn more about PTR records and when they are used.
Mar 28, 2023 · The PTR or "pointer" DNS record type maps an IP address to a domain name in the DNS. This is called a DNS reverse lookup. Most DNS records types are used in "forward lookups". A DNS forward lookup maps a DNS name to an IP address or another piece of DNS data. PTR records do the opposite.
Jul 30, 2019 · PTR records enable reverse DNS: The domain name is determined based on an IP address. How does this work? We explain the PTR record lookup.
Sep 15, 2023 · A pointer (PTR) record resolves an IP address (made up of numbers and decimals) into a domain name (such as okta.com). The act of translating an IP address into a domain name is known as a reverse lookup in the Domain Name System (DNS).
Aug 18, 2022 · DNS PTR records, more commonly referred to as pointer records, help map an IP address to a hostname by telling an IP client the name of the system assigned to it. This article serves as both a brief introduction to PTR records and an explanation of how they are used.
PTR (Pointer) records are a type of DNS record that maps an IP address to a domain name. PTR records are often used in email servers to verify the sender’s domain name and to combat spam and phishing attacks.
A PTR (pointer) record maps an IP address to the domain name. It’s often called a "reverse DNS entry" because it converts an IP address to a name.
May 9, 2024 · PTR records specify the allowed hosts for a given IP address. They are the opposite of A records and used for reverse DNS lookups. Historically, PTR records prevented outbound SMTP servers from being blocked by spam filters.
PTR records store IP addresses with their segments reversed, and they append ".in-addr.arpa" to that. For example if a domain has an IP address of 192.0.2.1, the PTR record will store the domain's information under 1.2.0.192.in-addr.arpa.
Oct 19, 2021 · DNS PTR record is a type of DNS record, which is oftentimes called pointer record. This is because it helps to associate an IP address to a domain name. The goal is to show that the specific IP address is actually related to the domain name.
