MxToolBox
mxtoolbox.com › DNSLookup.aspx
DNS Lookup Tool - DNS Tools - MxToolbox
This test will list DNS records for a domain in priority order. The DNS lookup is done directly against the domain's authoritative name server, so changes to DNS Records should show up instantly. By default, the DNS lookup tool will return an IP address if you give it a name (e.g.
NSLookup
nslookup.io
DNS Lookup
Online nslookup is a web based DNS client that queries DNS records for a given domain name. It allows you to view all the DNS records for a website.
DNS Lookup tools?
You could use 'dig'. Its in the dnsutils package in the repo.
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March 17, 2013How to test wildcard dns lookup from cli
There is no direct way to test this, but you can check the current state. diag test app dnsproxy 7-> find the entry for your "*.somedomain.com" and review the IPs it currently matches. You can then try resolving some relevant FQDN on a relevant workstation, and check if that IP shows up in the FQDN dump underneath the wildcard record. More on reddit.com
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April 26, 2022Reverse DNS Lookup with 123Reg
You're looking for updating your PTR records, I found this when looking for 123Reg PTR records https://www.123-reg.co.uk/support/servers/how-can-i-setup-a-reverse-dns-record-on-my-vps-server/ More on reddit.com
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October 27, 2021Why does my DNS lookup fail the first time, but then work immediately after?
r/techsupport More on reddit.com
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June 24, 2022What is a forward DNS lookup?
Forward DNS, also known as a forward DNS lookup, is one of the two different types of DNS lookup. This type follows the standard DNS query journey when you type in a URL or send an email and receive the related IP address in response to your request. This process allows an end client (your device) to translate a domain name or email address into the address of the device that would handle the server-side communication.
digicert.com
digicert.com › faq › dns › how-does-dns-lookup-work
How does DNS lookup work? | DigiCert FAQ
What is a reverse DNS lookup?
Reverse DNS, also known as a reverse DNS lookup, is the second type of DNS lookup. This lookup request is used to obtain the domain name related to an IP address. Reverse lookups are typically used by email servers to ensure the servers they’re receiving messages from are valid. To complete this process, the mail server must have a pointer (PTR) record established. This type of record informs other mail servers that its IP address is authoritative for sending and receiving mail for its related domain.
digicert.com
digicert.com › faq › dns › how-does-dns-lookup-work
How does DNS lookup work? | DigiCert FAQ
What is a query journey?
A query journey includes every step taken to translate the domain name you’re trying to reach into an IP address. The journey begins when you enter a web address into your browser. The recursive server is the query’s first stop. From there, the recursor contacts a series of authoritative nameservers to gain the information it needs to translate the domain name into a language the computer can read. Finally, the IP address of the desired domain is returned. DNS records set the rules and lay down the paths the query will travel along. They store all the relevant information servers need to prop
digicert.com
digicert.com › faq › dns › how-does-dns-lookup-work
How does DNS lookup work? | DigiCert FAQ
Videos
09:14
How To Lookup DNS Records With The dig Command - YouTube
12:22
How to use the nslookup command to query DNS - YouTube
07:47
Nslookup in 5 minutes. A command line utility for querying DNS ...
06:50
DNS Lookup Tools: dig, nslookup, and host Explained! - YouTube
14:17
How to Use the dig Command in Linux | DNS Lookup Tutorial - YouTube
10:51
62. How DNS Works in Simple Terms 🔍 | DNS Lookup Explained with ...
DNS Checker
dnschecker.org › all-dns-records-of-domain.php
DNS Lookup - Check All DNS Records for Any Domain
Our DNS Lookup tool directly queries the domain's authoritative name server. It let you check all DNS records of a domain. Enter domain, and get results.
Misk
misk.com › tools
DNS Lookup / NSLookup: Check DNS Records - Misk.com
Domain name and ip address tools for DNS Lookup (nslookup), Reverse DNS Lookup (rDNS), Whois, and Traceroute. IPv4, IPv6, DMARC, and FCrDNS (forward confirmed reverse dns) lookups supported.
Google
toolbox.googleapps.com › apps › dig
Dig (DNS lookup)
To make a DNS lookup: Enter domain name (trailing dot will be auto-appended). Lookup and enjoy the output. Google Admin Toolbox · This site uses cookies from Google to deliver its services and to analyze traffic.
DigitalOcean
digitalocean.com › community › tools › dns
DNS Lookup | DigitalOcean
A simple browser-based tool to perform DNS lookups. Type a domain, search, and instantly get results.
WhatIsDNS
whatsmydns.net › dns-lookup
DNS Lookup - Check All DNS records for any domain
Instant DNS Lookup. Check DNS records and propagation globally.
Wikipedia
en.wikipedia.org › wiki › Reverse_DNS_lookup
Reverse DNS lookup - Wikipedia
June 15, 2025 - In computer networks, a reverse DNS lookup or reverse DNS resolution (rDNS) is the querying technique of the Domain Name System (DNS) to determine the domain name associated with an IP address – the reverse of the usual "forward" DNS lookup of an IP address from a domain name.
IBM
ibm.com › think › topics › dns-lookup
What is DNS Lookup? | IBM
November 17, 2025 - DNS lookup is the process of translating human-readable domain names into IP addresses.
DigiCert
digicert.com › faq › dns › how-does-dns-lookup-work
How does DNS lookup work? | DigiCert FAQ
A DNS lookup is the query journey initiated each time you enter a URL into your web browser’s address bar. Your DNS recursive resolver, also known as a recursor or resolver, will first check to see if the requested information is in cache.
Cloudflare
cloudflare.com › learning › dns › glossary › reverse-dns
What is reverse DNS? | Cloudflare
A reverse DNS lookup takes an IP address and returns the domain name associated with that IP.
ICANN
lookup.icann.org
ICANN Lookup
The ICANN registration data lookup tool gives you the ability to look up the current registration data for domain names and Internet number resources.
Microsoft Learn
learn.microsoft.com › en-us › windows-server › administration › windows-commands › nslookup
nslookup | Microsoft Learn
Reference article for the nslookup command, which displays information that you can use to diagnose Domain Name System (DNS) infrastructure.
Zoho
zoho.com › toolkit › dns-lookup.html
DNS Lookup - Check DNS records of your domain
DNS lookup tool helps you find the necessary information about your domain by accessing its authoritative name server. Enter your domain name and get the corresponding DNS records as your result.
WhatIsMyIP.com®
whatismyip.com › dns-lookup
DNS Lookup Tool | Check DNS Records for Any Domain - WhatIsMyIP.com®
The DNS lookup tool finds the IP address of any domain name, returning IP addresses in the DNS records received from the name servers.
ViewDNS.info
viewdns.info
ViewDNS.info - Your trusted source for domain and IP intelligence!
View all DNS records for a specified domain.
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ping -a w.x.y.z
Should resolve the name from the IP address if the reverse lookup zone has been set up properly. If the reverse lookup zone does not have an entry for the record, the -a will just ping without a name.
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nslookup <ip>
Does what you're looking for. It will tell you the server you're querying and the result.
For example:
c:\>nslookup 192.168.101.39
Server: dns1.local
Address: 192.168.101.24
Name: enigma.local
Address: 192.168.101.39
Google
dns.google
Google Public DNS
Enter a domain (like example.com) or IP address (like 8.8.8.8 or 2001:4860:4860::8844) here
DNSDumpster
dnsdumpster.com › home
DNSDumpster - Find & lookup dns records for recon & research
November 18, 2024 - dns recon & research, find & lookup dns records · DNSDumpster.com is a FREE domain research tool that can discover hosts related to a domain. Finding visible hosts from the attackers perspective is an important part of the security assessment process. The ability to quickly identify the ·
MxToolBox
mxtoolbox.com
MX Lookup Tool - Check your DNS MX Records online - MxToolbox
The MX lookup is done directly against the domain's authoritative name server, so changes to MX Records should show up instantly. You can click Diagnostics , which will connect to the mail server, verify reverse DNS records, perform a simple Open Relay check and measure response time performance.