How do I find the authoritative name server using nslookup?

12 Answers. You’ll want the SOA (Start of Authority) record for a given domain name, and this is how you accomplish it using the universally available nslookup command line tool: command line> nslookup > set querytype=soa > stackoverflow.com Server: 217.30.

How do I find authoritative name servers?

To find out who is responsible for DNS hosting of a domain, you need to find the authoritative DNS servers (or Name Servers) for that domain. A list of DNS servers authoritative for the domain is shown in the Name Server (NS) record. To find this record, you can use the NSLOOKUP tool.

What is MX in nslookup?

An MX (mail exchange) record is an entry in your DNS. zone file which specifies a mail server to handle a domain’s email. You must configure an MX recordMail Exchanger record is a record in DNS that specifies which server is handles email messages. to receive email to your domain.

Which DNS server is authoritative?

The second type of DNS server holds a copy of the regional phone book that matches IP addresses with domain names. These are called authoritative DNS servers. Authoritative DNS nameservers are responsible for providing answers to recursive DNS nameservers about where specific websites can be found.

What is the difference between authoritative and Nonauthoritative DNS?

Authoritative DNS servers are responsible for the proper mapping of records and to respond to the recursive servers with important information for each website, such as; corresponding IP addresses and other necessary DNS records. Non-authoritative name servers do not contain the original zone files.

How do I use nslookup with different DNS servers?

nslookup use specific dns server You may choose to use a DNS server other than your primary DNS server. To do this, type nslookup, followed by the name of the domain you wish to query, and then the name or IP address of the DNS server you wish to use.

How many authoritative DNS servers are there?

There are hundreds of root servers at over 130 locations all over the world. ICANN² is responsible for the servers for one of the 13 IP addresses and entrusts the operation of the rest to various other organizations. In total, there are 12 organizations held responsible, with VeriSign operating two of them³.

What is authoritative and Nonauthoritative DNS server?

Authoritative DNS servers are responsible for the proper mapping of records and to respond to the recursive servers with important information for each website, such as; corresponding IP addresses and other necessary DNS records. Non-Authoritative.

Can MX record be an IP address?

It’s not possible for an MX record to have an IP address as its data. You could make the label the textual representation of an IP address, but it wouldn’t make any sense to do so, since it can’t be resolved as a hostname.

How do I find my SMTP server IP address?

Type “ping,” a space and then the name of your SMTP Server. For example, type “ping smtp.server.com” and press “Enter.” The window will then try to contact the SMTP server by the IP address. It will say, “Pinging x.x.x.x with 32 bytes of data.” The “x.x.x.x” will be the SMTP server’s IP address.

How do I set up an authoritative DNS server?

Configure Authoritative Name Server Using BIND on Ubuntu

1. Introduction.
2. Requirements.
3. Prepare Servers.
4. Install BIND.
5. Configure Primary Server.
6. Create Zone File.
7. Configure Secondary Server.
8. Test DNS Resolution.

What are the two types of DNS?

What are the different types of DNS server? All DNS servers fall into one of four categories: Recursive resolvers, root nameservers, TLD nameservers, and authoritative nameservers.

Where does a non-authoritative answer come from in nslookup?

A non-authoritative answer comes from anywhere else (a nameserver not in the list for the domain you did a lookup on). If I perform a nslookup of google.com, I would get a response from one of my configured nameservers. (Either from my ISP, or my domain.)

How to look up a specific nameserver with nslookup?

We can use nslookup – querytype=ns [root domain] to do this. This is how you look up records from a specific name server. It uses the syntax nslookup [host-name] [nameserver]. You can supply the name of the nameserver: nslookup www.stevefenton.co.uk amy.ns.cloudflare.com, or its IP address: nslookup www.stevefenton.co.uk 2a06:98c1:50::ac40:2065.

Which is the default resource type in nslookup?

The default nslookup resource records type is A and AAAA, but you can use different types of resource records: You can set specific record types to lookup using the nslookup parameter: For example, to list all mail servers configured for a specific domain (MX, Mail eXchange records), run the command: Non-authoritative answer:

What is the nslookup command in Linux used for?

nslookup is one of the popular networking commands in Linux used for querying the Domain Name System (DNS) records. Unsurprisingly, nslookup stands for name server lookup.