DNS Lookup Pro: Advanced DNS Record Analysis & Troubleshooting

Quickly perform a DNS Lookup: By entering your domain or IP address, you can check your website's name servers and network information, ensuring efficient DNS record management.

What is DNS Lookup?

A DNS (Domain Name System) lookup is a process used to translate a domain name, such as "www.example.com," into its corresponding IP address, like "192.0.2.1". This translation is essential because, while domain names are easy for people to remember, computers and networks use IP addresses to identify and locate each other on the Internet.

The DNS system functions similarly to a phone book for the Internet. When you type a domain name into your web browser, your computer performs a DNS lookup to find the specific IP address associated with that domain. This process involves querying DNS servers, which are special servers that store a database of domain names and their corresponding IP addresses.

The lookup starts with your computer sending a request to a recursive DNS server, typically managed by your Internet Service Provider (ISP). If this server doesn't have the record in its cache, it passes the request to a root DNS server. The root server directs the query to a top-level domain (TLD) server (like .com, .net), which in turn directs it to an authoritative DNS server that holds the actual IP address for the domain. Once the IP address is retrieved, your computer can connect to the desired website using this address.

DNS lookups are usually quick and occur behind the scenes, ensuring a seamless Internet browsing experience. They play a critical role in the functionality of the Internet, allowing users to access websites using familiar domain names instead of numerical IP addresses.


DNS Lookup

How to Perform DNS Lookup on Windows

To perform a DNS lookup on a Windows computer, you can use the nslookup command. Here's how you can do it:

Open Command Prompt:

Press Win + R, type cmd, and press Enter. This will open the Command Prompt.

Use the nslookup Command:

  • To look up the IP address of a domain, type nslookup [domain name]. For example, nslookup www.google.com.
  • To find the DNS records of a domain, you can specify the type of record, like nslookup -type=mx [domain name] for mail exchange records.

Review the Results:

The Command Prompt will display the DNS record information for the domain you entered. This includes the server name, its IP address, and any specific DNS record information you requested.

How to Perform DNS Lookup on Linux

Performing a DNS Lookup on Linux

To perform a DNS lookup on a Linux system, you typically use the dig or nslookup commands. Below are the steps for each method:

Using the dig Command

  1. Open the Terminal.
  2. Type dig [domain name] and press Enter. For example, dig www.google.com.
  3. Review the output, which includes the domain's IP address, DNS server information, and various DNS record details.

Using the nslookup Command

  1. Open the Terminal.
  2. Type nslookup [domain name] and press Enter. For example, nslookup www.google.com.
  3. Review the results, which will display the IP address associated with the domain name.

Both dig and nslookup provide detailed DNS information and are widely used for troubleshooting DNS-related issues.

DNSlookup Pro Services

What Is My IP Address

Easily find out what your IP address is and learn whether you're using IPv4 or IPv6. This tool helps you detect your public IP, location, and ISP details in real time for privacy or troubleshooting purposes.

IP Address Lookup

Run an advanced IP address lookup to discover geographic location, organization, and network provider information behind any IP worldwide. It's perfect for cybersecurity checks, server tracing, or network verification.

Internet Speed Test

Use our accurate internet speed test to measure your download and upload speed, ping, and latency. Great for diagnosing slow connections, ISP issues, or VPN performance.

Whois Lookup

Perform a complete Whois lookup to find out the owner, registrar, and creation or expiration dates of any domain. Ideal for verifying domain ownership or monitoring domain expiration and transfer details.

Reverse DNS Lookup

The reverse DNS lookup tool finds the domain name associated with a given IP address. It's useful for verifying mail server setups, diagnosing PTR records, or tracing server origins.

DNS Lookup Checker

Our DNS lookup checker retrieves and analyzes all DNS records — including A, AAAA, MX, NS, TXT, and CNAME. It helps you confirm whether your domain is properly configured and globally accessible.

IP Whois Lookup

Run a comprehensive IP Whois lookup to identify the organization, ASN, registry, and country behind an IP range. It's an essential tool for network analysis and IP reputation monitoring.

My User Agent

The My User Agent tool instantly reveals your browser version, device type, operating system, and rendering engine, helping developers and testers ensure cross-platform compatibility.

My Screen Resolution

Check your screen resolution and viewport size with this quick diagnostic tool. Perfect for designers, developers, and QA teams to verify how websites display on different devices.

WiFi Speed Test

The WiFi speed test measures your wireless download and upload speed, latency, and stability. It helps you identify signal issues or network bottlenecks within your local Wi-Fi setup.

Upload Speed Test

Quickly check your upload speed to see how efficiently your connection sends data to the Internet — vital for video calls, file transfers, and cloud backups.

Download Speed Test

The download speed test measures your real-time data transfer rate from our global servers. Use it to evaluate ISP performance or VPN download speeds.

IPv4 and IPv6 Check

View both your IPv4 and IPv6 addresses and confirm dual-stack connectivity. This helps users and administrators ensure modern network compatibility and configuration accuracy.

SSL Checker

Run an SSL checker to verify your domain's HTTPS certificate, expiry date, and encryption strength. Essential for maintaining website security and SEO trust signals.

IP Subnet Calculator

The IP subnet calculator lets you divide or merge subnets, showing network size, CIDR ranges, and usable hosts. Ideal for network engineers and administrators managing IP allocations.

RAID Calculator

Estimate storage capacity, redundancy, and performance using the RAID calculator. It helps you choose the right RAID configuration (0,1,5,6,10) for your disks or servers.

Port Checker & Scanner

Use the port checker and scanner to detect open, closed, or filtered ports on any host. Great for security auditing, firewall testing, and service discovery.

Online Ping Test

The ping test checker sends ICMP requests to measure latency, jitter, and packet loss between your device and remote servers. It's essential for network troubleshooting and uptime monitoring.

Trace IP & Trace Route

With trace IP and trace route, follow the exact path your data travels through networks. Analyze routing hops, delays, and connection bottlenecks to understand Internet latency issues.

ASN Lookup

Run an ASN lookup to find the Autonomous System Number, organization name, and IP range ownership of any network. Useful for ISP identification and Internet routing analysis.

DNS Educational Guides (Entity-Based Explanations)

What Is DNS

Learn what DNS (Domain Name System) means and how it translates domain names into IP addresses so browsers can find websites quickly and efficiently.

What Is a DNS Server

Understand what a DNS server does — it stores and resolves domain information to route Internet traffic between domain names and their IP endpoints.

DNS Server List

Explore our DNS server list featuring top providers like Cloudflare, Google, and Quad9, with their IPs, security features, and performance details.

What Is Flush DNS

Discover what flushing DNS means, how clearing your DNS cache fixes connectivity errors, and why it's important after DNS or hosting changes.

What Is DNS Propagation

Understand DNS propagation, how long global DNS updates take, and how to check propagation status when changing records or migrating websites.

How to Change DNS

Learn how to change DNS settings on Windows, macOS, Linux, Android, iOS, and routers to improve Internet speed, security, and reliability.

What Is DNS Leak Test

Find out what a DNS leak test is, why it matters for VPN privacy, and how to check if your DNS requests are leaking outside encrypted tunnels.

DNS Full Form

The full form of DNS is Domain Name System — the global naming infrastructure that links domain names to numerical IP addresses for seamless web access.

What Is DNS Port

Learn what DNS port 53 is and how DNS uses UDP and TCP protocols for queries, while secure alternatives like DoH (443) and DoT (853) encrypt traffic.

Frequently Asked Questions About DNS Lookup Pro

Find here the most frequent questions while enriching your knowledge.

DNS Lookup is a management tool that allows site owners to manage their domain easily.

DNS Lookup provides a variety of essential tools for webmasters and site owners, including ASN Look up, Port scanner, SSL Checker, and subnet calculator.

DNS Lookup is designed to be easy to use. The platform's interface makes it easy for users to navigate and perform various tasks.

Using DNS Lookup can save webmasters and site owners time and money by providing a one-stop-shop for domain tasks.

DNS Lookup is ideal for webmasters and site owners who want to manage their website efficiently and effectively.

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