How does a public DNS work?

How does a public DNS work?

Google Public DNS uses Name Server (NS) records published in the DNS root zone and zones of top-level domains to find the names and addresses of the DNS servers that are authoritative for any domain. Some of those name servers also use anycast routing.

How Public DNS works step by step?

How Does the DNS Process Work?

1. Step 1: Requesting Website Information.
2. Step 2: Contact the Recursive DNS Servers.
3. Step 3: Query the Authoritative DNS Servers.
4. Step 4: Access the DNS Record.
5. Step 5: Final DNS Step.
6. Authoritative DNS Server.
7. Recursive Nameserver.

What is a public DNS server?

A public recursive name server (also called public DNS resolver) is a name server service that networked computers may use to query the Domain Name System (DNS), the decentralized Internet naming system, in place of (or in addition to) name servers operated by the local Internet service provider (ISP) to which the …

Is it safe to use Google Public DNS?

Google Public DNS has been available for almost 10 years, with the easy-to-remember IP addresses of 8.8. 8.8 and 8.8. 4.4. Google promises a secure DNS connection, hardened against attacks, as well as speed benefits.

How many public DNS servers are there in the world?

Public DNS Server List. This database contains public DNS Servers that are reachable by IPv4 or IPv6. Currently there are 12,682 Nameservers from 239 countries in the database.

What are the different types of DNS records?

Different Types of DNS Records 1 A record: the most basic type of record, also known as address record, provides an IPv4 address to a domain name or sub-domain name. 2 AAAA record: maps the hostname to 128-bits IPv6 address. 3 CNAME record: also known as Canonical Name record, creates an alias of one domain name.

How do I get a DNS record for a domain?

Enter a domain name and select record type to get a specific record or keep default to fetch all DNS records. Enter Domain URL and Select DNS Record Type above, or Select “ANY” to Fetch All DNS Records.

What does a TXT record on DNS mean?

TXT record: allows the website’s administrator to insert any arbitrary text in the DNS record. CAA record: also known as Certification Authority Authorization record, reflects the public policy regarding the issuance of digital certificates for the domain.