Dns Lookup

DNS Lookup Tool

Check All DNS Records for Any Domain - Complete DNS Analysis

What is the DNS Lookup Tool?

The DNS Lookup Tool is a comprehensive, free online utility that retrieves and displays all DNS (Domain Name System) records for any domain, providing complete visibility into a domain's DNS configuration. DNS records are the instructions that tell the internet how to route traffic to your domain, where to deliver emails, and which nameservers control your DNS.cloudflare+2​

Whether you're a system administrator verifying DNS propagation, a web developer troubleshooting website issues, a security analyst investigating domain configurations, or a domain owner managing your online presence, the CyberTools DNS Lookup Tool provides instant, detailed analysis of any domain's DNS infrastructure.mxtoolbox+1​

How to Use the DNS Lookup Tool

Using our DNS record checker is simple and delivers comprehensive results:mxtoolbox​

Step 1: Enter the Domain Name

Input the domain you want to analyze:mxtoolbox​

• Domain only: example.com, google.com, yourwebsite.com
• No protocol: Don't include http:// or https://
• No www: Enter root domain, not www.example.com
• Subdomains: Can also check mail.example.com, api.example.com

Step 2: Select Record Type (Optional)

Choose which DNS records to query:protonvpn+1​

• ALL Records – Retrieve every DNS record type (default)mxtoolbox​
• A Record – IPv4 address mappingleaseweb+1​
• AAAA Record – IPv6 address mappingcloudns+1​
• MX Record – Mail exchange servers
• CNAME Record – Canonical name aliasescloudns​
• TXT Record – Text records (SPF, DKIM, verification)protonvpn+1​
• NS Record – Nameserver informationleaseweb+1​
• SOA Record – Start of Authorityprotonvpn​
• PTR Record – Reverse DNSleaseweb+1​

Step 3: Choose DNS Server (Optional)

Select which DNS resolver to query:

• Google DNS: 8.8.8.8 (default, fast and reliable)
• Cloudflare DNS: 1.1.1.1 (privacy-focused)
• OpenDNS: 208.67.222.222
• Authoritative Nameserver: Query domain's own NS directlymxtoolbox​
• Custom DNS: Specify any DNS server

Why test multiple servers?

• Verify DNS propagation globally
• Check consistency across resolvers
• Troubleshoot regional DNS issues

Step 4: Click "Lookup DNS Records"

Our tool instantly queries DNS servers and displays:mxtoolbox​

• All DNS records for the domainmxtoolbox​
• Record type, name, value, and TTLmxtoolbox​
• Authoritative nameserver responsesmxtoolbox​
• Additional record details and metadata
• Query response time

Step 5: Analyze the Results

You'll receive comprehensive DNS information including:protonvpn+1​

Complete Record List:

• All configured DNS record typesmxtoolbox​
• Record values and data
• TTL (Time To Live) for cachingibm​
• Priority values (for MX records)
• Flags and additional parameters

Query Details:

• Which DNS server responded
• Query response time
• Authoritative vs cached responsemxtoolbox​
• DNS server IP address
• Query status and errors (if any)

What is DNS and DNS Lookup?

DNS (Domain Name System) is often called the "internet's phonebook" because it translates human-readable domain names like google.com into machine-readable IP addresses like 142.250.185.46. Without DNS, you'd need to memorize numerical IP addresses for every website you visit.cloudflare+1​

What is DNS Lookup?

DNS lookup is the process of querying DNS servers to retrieve DNS records associated with a domain name. It's the fundamental mechanism that enables internet communication by converting domain names to IP addresses and providing routing information.ibm+1​

Two types of DNS lookup:

Forward DNS Lookup:ibm​

• Converts domain name → IP address
• Most common type of DNS queryibm​
• Example: example.com → 93.184.216.34
• Used every time you visit a websiteibm​

Reverse DNS Lookup:ibm​

• Converts IP address → domain name
• Uses PTR recordscloudns+1​
• Example: 93.184.216.34 → example.com
• Used for email verification and security

How DNS Lookup Works

The DNS lookup process involves multiple steps and servers working together:stackoverflow+2​

The 8 Steps of DNS Resolutioncloudflare+1​

Step 1: User Requestibm​

• User types www.example.com in browseribm​
• Browser initiates DNS queryibm​
• Checks local DNS cache firststackoverflow​

Step 2: Local Cache Checkstackoverflow+1​

• Operating system checks hosts filestackoverflow​
• Browser checks its DNS cache
• If found and not expired, returns immediatelyibm​

Step 3: Recursive Resolver Queryibm​

• If not cached, query goes to DNS resolveribm​
• Usually your ISP's DNS server or public DNS (8.8.8.8)
• Resolver acts on your behalf to find the answeribm​

Step 4: Root Nameserver Querycloudflare+1​

• Resolver queries root nameserversibm​
• 13 sets of root servers worldwidecloudflare​
• Root servers direct to TLD nameserverscloudflare​

Step 5: TLD Nameserver Querycloudflare+1​

• Query sent to Top-Level Domain servers (.com, .org, .net)ibm​
• TLD servers know which nameservers control specific domainscloudflare​
• Returns authoritative nameserver addressescloudflare​

Step 6: Authoritative Nameserver Querycloudflare+1​

• Resolver queries domain's authoritative nameserverscloudflare+1​
• These servers have the actual DNS recordsmxtoolbox​
• Final source of truth for domain DNS datamxtoolbox​

Step 7: Response Deliveryibm​

• Authoritative nameserver returns DNS recordsmxtoolbox​
• Data includes IP address and other informationibm​
• Response includes TTL for caching durationibm​

Step 8: Browser Connectionibm​

• Resolver returns IP address to browseribm​
• Browser connects to web server at that IPibm​
• Webpage loads for useribm​

This entire process typically happens in milliseconds, making it invisible to users.ibm​

DNS Record Types Explained

DNS supports numerous record types, each serving specific functions:leaseweb+2​

A Record (Address Record)cloudns+1​

Purpose: Maps domain name to IPv4 addresscloudns​

Example:

text
example.com.    3600    IN    A    93.184.216.34

What it does:

• Most fundamental DNS record typecloudns​
• Tells browsers which IP address hosts the websitecloudns​
• Required for website accessibilitycloudns​
• Can have multiple A records for load balancing

Use cases:

• Website hosting
• Application servers
• API endpoints
• Any IPv4-accessible service

AAAA Record (IPv6 Address Record)leaseweb+1​

Purpose: Maps domain name to IPv6 addresscloudns​

Example:

text
example.com.    3600    IN    AAAA    2606:2800:220:1:248:1893:25c8:1946

What it does:

• IPv6 equivalent of A recordleaseweb+1​
• Points to 128-bit IPv6 addressescloudns​
• Future-proofs domain for IPv6 adoptioncloudns​
• Works alongside A records (dual-stack)

Difference from A record:

• A = IPv4 (32-bit addresses)leaseweb​
• AAAA = IPv6 (128-bit addresses)leaseweb+1​

MX Record (Mail Exchange)cloudns​

Purpose: Specifies mail servers for domaincloudns​

Example:

text
example.com.    3600    IN    MX    10 mail.example.com.
example.com.    3600    IN    MX    20 mail2.example.com.

What it does:

• Directs email to proper mail serverscloudns​
• Priority value (lower = higher priority)
• Multiple MX records provide redundancy
• Essential for receiving email

Components:

• Priority number (10, 20, 30, etc.)
• Mail server hostname

CNAME Record (Canonical Name)cloudns​

Purpose: Creates alias pointing to another domaincloudns​

Example:

text
www.example.com.    3600    IN    CNAME    example.com.
blog.example.com.   3600    IN    CNAME    hosting.provider.com.

What it does:

• Aliases one domain to anothercloudns​
• Simplifies DNS management
• Cannot be used for root domain
• Follows redirect to target domain

Common uses:

• www subdomain → root domain
• CDN configurations
• Service integrations
• Subdomain routing

TXT Record (Text Record)protonvpn+1​

Purpose: Holds arbitrary text dataprotonvpn+1​

Example:

text
example.com.    3600    IN    TXT    "v=spf1 include:_spf.google.com ~all"
example.com.    3600    IN    TXT    "google-site-verification=abc123..."

What it does:

• Stores human-readable or machine-readable textcloudns​
• Most flexible DNS record typeprotonvpn​
• Multiple TXT records allowed
• Used for various verification and authentication purposes

Common uses:protonvpn+1​

• SPF (Sender Policy Framework): Email authenticationprotonvpn​
• DKIM (DomainKeys Identified Mail): Email signingprotonvpn​
• DMARC: Email policy enforcement
• Domain verification: Prove domain ownership (Google, Microsoft)
• Security policies: CAA records, security.txt

NS Record (Nameserver Record)leaseweb+1​

Purpose: Identifies authoritative nameservers for domainleaseweb+1​

Example:

text
example.com.    3600    IN    NS    ns1.example.com.
example.com.    3600    IN    NS    ns2.example.com.

What it does:

• Points to servers that host DNS recordsleaseweb​
• Delegates DNS control to specific nameserversprotonvpn​
• Multiple NS records for redundancyleaseweb​
• Critical for DNS resolutionprotonvpn​

Importance:

• Defines who controls domain DNS
• Required for domain functionality
• Changes during domain transfers

SOA Record (Start of Authority)protonvpn​

Purpose: Provides administrative information about domainprotonvpn​

Example:

text
example.com. SOA ns1.example.com. admin.example.com. (
    2024112801  ; Serial number
    7200        ; Refresh (2 hours)
    3600        ; Retry (1 hour)
    1209600     ; Expire (2 weeks)
    86400       ; Minimum TTL (1 day)
)

What it contains:protonvpn​

• Primary nameserver
• Responsible person's emailprotonvpn​
• Serial number (version tracking)protonvpn​
• Refresh, retry, expire timersprotonvpn​
• Minimum TTL

Purpose:

• Zone management information
• Synchronization between DNS serversprotonvpn​
• Change tracking via serial numbersprotonvpn​

PTR Record (Pointer Record)leaseweb+1​

Purpose: Maps IP address to domain name (reverse DNS)leaseweb+1​

Example:

text
34.216.184.93.in-addr.arpa.    3600    IN    PTR    example.com.

What it does:

• Opposite of A/AAAA recordscloudns​
• Enables reverse DNS lookupscloudns​
• Used for email server verificationleaseweb​
• Improves email deliverabilitycloudns​

Common uses:

• Email server authentication
• Network diagnostics
• Security logging
• Abuse tracking

Additional Record Typesleaseweb+1​

CAA Record: Certificate Authority Authorizationcloudns​

• Specifies which CAs can issue SSL certificates
• Security against fraudulent certificates

SRV Record: Service Recordcloudns​

• Defines hostname and port for services
• Used for VoIP, instant messaging, gaming

DNSKEY Record: DNS Public Keyleaseweb+1​

• Stores public keys for DNSSECleaseweb+1​
• Cryptographic security for DNScloudns​

RRSIG Record: Resource Record Signaturecloudns​

• Digital signatures for DNSSECcloudns​
• Ensures DNS data authenticitycloudns​

NAPTR Record: Naming Authority Pointercloudns​

• IP telephony and SIP routingcloudns​
• Maps telephone numbers to services

Why Use DNS Lookup?

1. Verify DNS Configuration

Confirm DNS records are set correctly:

After making DNS changes:

• Check if new records are visiblemxtoolbox​
• Verify record values match intended configuration
• Confirm no typos or errors in DNS entries
• Ensure all required records existcbabenelux​
• Test from authoritative nameserversmxtoolbox​

Critical times to verify:

• After domain registration
• During website migrations
• When changing hosting providers
• After email service updates
• Following nameserver changes

2. Troubleshoot Website Issues

Diagnose connectivity and access problems:

Common scenarios DNS lookup helps solve:

• Website not loading: Check if A record existscbabenelux​
• www not working: Verify CNAME or A record for www subdomain
• Email not received: Check MX records
• SSL certificate errors: Verify CAA records
• Subdomain issues: Confirm subdomain DNS recordsibm​

Example: Website works at example.com but not www.example.com → DNS lookup reveals missing CNAME record for www subdomain.

3. Monitor DNS Propagation

Track DNS changes across global internet:

DNS changes take time to propagate:ibm​

• Check if updates visible on different DNS servers
• Verify propagation across geographic regions
• Monitor TTL expiration and cache updatesibm​
• Confirm changes reached ISP DNS servers
• Track nameserver delegation updates

Propagation timeline: Can take 24-48 hours based on TTL values.ibm​

4. Email Deliverability Testing

Ensure proper email configuration:

Email-related DNS records to verify:

• MX records: Mail server configurationcloudns​
• SPF records: Authorized sending serversprotonvpn+1​
• DKIM records: Email signing keysprotonvpn​
• DMARC records: Email authentication policy
• PTR records: Reverse DNS for mail serverscloudns​

Poor email deliverability? DNS lookup often reveals misconfigured email authentication records.

5. Security Auditing

Assess DNS security posture:

Security checks:

• DNSSEC validation: Check DNSKEY and RRSIG recordsleaseweb+1​
• CAA records: Certificate authority restrictions
• SPF/DKIM/DMARC: Email spoofing protectionprotonvpn+1​
• Exposed subdomains: Discover all configured subdomains
• Nameserver security: Verify authoritative NS security

6. Competitive Intelligence

Research competitor infrastructure:

DNS records reveal technical details:

• Hosting providers (from A record IPs)
• Email service providers (from MX records)
• CDN usage (from CNAME records)
• Third-party integrations (from TXT records)
• Infrastructure complexity (from multiple records)

7. Domain Transfer Preparation

Document DNS before transferring domains:

Pre-transfer checklist:

• Export all DNS recordsmxtoolbox​
• Document current nameservers
• Lower TTL values 48 hours before transferibm​
• Verify all record types configured
• Prepare records for new registrar/DNS host

8. SEO and Web Performance

Optimize for search engines:

SEO-related DNS factors:

• A/AAAA records point to fast servers
• CDN configuration via CNAME
• Subdomain structure for content organizationibm​
• Email deliverability affects outreach
• DNSSEC improves trust signalscloudns​

Common Use Cases

System Administrators

Daily infrastructure management:

• Verifying DNS after configuration changesmxtoolbox​
• Troubleshooting connectivity issuescbabenelux​
• Monitoring DNS propagation status
• Documenting network infrastructure
• Planning domain migrations
• Security auditing and compliance

Web Developers

Development and deployment:

• Checking DNS before going live
• Debugging subdomain configurationsibm​
• Verifying CDN setup (CNAME records)
• Testing staging environment DNS
• Configuring custom domains for apps
• API endpoint DNS verification

Email Administrators

Email system management:

• Configuring MX records properlycloudns​
• Setting up SPF, DKIM, DMARCprotonvpn+1​
• Troubleshooting email delivery failures
• Verifying backup mail servers
• Testing email authentication
• Monitoring mail server DNS health

Security Analysts

Security operations:

• Investigating suspicious domains
• Checking DNSSEC implementationcloudns​
• Analyzing phishing site infrastructure
• Discovering hidden subdomains
• Verifying security record configurations
• Threat intelligence gathering

SEO Professionals

Search optimization work:

• Verifying proper DNS configuration
• Checking subdomain setup for contentibm​
• Testing CDN implementation
• Monitoring DNS performance
• International domain configuration
• Migration DNS verification

Domain Owners

Domain management:

• Verifying registrar DNS settings
• Checking nameserver delegation
• Confirming email configuration
• Testing website accessibilitycbabenelux​
• Monitoring DNS security
• Managing subdomain structureibm​

Features of CyberTools DNS Lookup Tool

✅ Comprehensive Record Retrieval

• All DNS record types supportedmxtoolbox+1​
• Multiple records per type displayed
• Complete record data with all fields
• TTL values for every recordibm​
• Priority and flags where applicable

🌐 Authoritative Queries

• Direct authoritative nameserver queriesmxtoolbox​
• No cached data – always fresh resultsmxtoolbox​
• Instant visibility of DNS changesmxtoolbox​
• Multiple DNS server options
• Custom DNS server support

⚡ Lightning-Fast Results

• Sub-second query responses
• Parallel record retrieval
• Optimized DNS queries
• Real-time processingmxtoolbox​
• No waiting queues

🔍 Detailed Information Display

Clear result presentation:

• Organized by record type
• Color-coded for readability
• Record value formatting
• TTL countdown timersibm​
• Query metadata included

📋 Export and Share

• Copy individual records
• Export all records (JSON, CSV, TXT)
• Shareable result URLs
• Print-friendly format
• API access for automation

🔒 Privacy-Focused

• No logging – Queries not stored
• Anonymous use – No registration required
• Secure HTTPS – Encrypted connections
• GDPR compliant
• No tracking cookies

📱 Mobile-Optimized

• Responsive design
• Touch-friendly interface
• Fast on mobile networks
• Same features on all devices
• Progressive web app

💡 User-Friendly Interface

• Simple input – Just domain namemxtoolbox​
• Clear explanations – Understand each record type
• Error messages – Helpful troubleshooting guidance
• Visual indicators – Status at a glance
• Help tooltips – Learn as you go

🔄 Additional Features

• DNS propagation checking
• Historical DNS records (premium)
• Alert notifications for DNS changes (premium)
• Bulk domain lookup (premium)
• API access for developers (premium)

Understanding DNS Lookup Results

Healthy DNS Configuration

text
Domain: example.com

A Records:
example.com.    3600    IN    A    93.184.216.34

AAAA Records:
example.com.    3600    IN    AAAA    2606:2800:220:1:248:1893:25c8:1946

MX Records:
example.com.    3600    IN    MX    10 mail.example.com.
example.com.    3600    IN    MX    20 mail2.example.com.

NS Records:
example.com.    86400   IN    NS    ns1.example.com.
example.com.    86400   IN    NS    ns2.example.com.

TXT Records:
example.com.    3600    IN    TXT    "v=spf1 include:_spf.example.com ~all"

SOA Record:
example.com.    86400   IN    SOA   ns1.example.com. admin.example.com. 2024112801

Status: ✅ Complete and Properly Configured

What this indicates:
✅ Domain resolves correctlycbabenelux​
✅ Dual-stack IPv4/IPv6 supportcloudns​
✅ Redundant mail servers configuredcloudns​
✅ Multiple nameservers for reliabilityleaseweb​
✅ Email authentication (SPF) presentcloudns​
✅ Well-maintained DNS with current SOA

Missing Critical Records

text
Domain: broken-website.com

A Records: None Found
AAAA Records: None Found
MX Records: None Found

NS Records:
broken-website.com.    86400   IN    NS    ns1.registrar.com.
broken-website.com.    86400   IN    NS    ns2.registrar.com.

Status: ❌ No A Records - Website Inaccessible

What this means:
❌ Website cannot load – No IP address configuredcbabenelux​
❌ Email won't work – No mail servers defined
❌ DNS not configured beyond basic nameservers
❌ Domain parking or recently registered

Solution: Add A/AAAA records pointing to web server IP.

DNS Propagation In Progress

text
Query Results from Different DNS Servers:

Google DNS (8.8.8.8):
example.com.    A    45.79.123.45 (Old IP)

Cloudflare DNS (1.1.1.1):
example.com.    A    198.51.100.75 (New IP)

Authoritative NS:
example.com.    A    198.51.100.75 (New IP)

Status: ⚠️ DNS Propagation In Progress

What this indicates:
⚠️ Inconsistent DNS responses across servers
⚠️ Recent DNS changes still spreading
⚠️ Authoritative NS updated but caches not expiredibm​
⏳ Wait 24-48 hours for full propagationibm​
💡 TTL determines propagation speedibm​

Best Practices for DNS Management

General DNS Hygiene

✅ Use multiple nameservers – Minimum 2, preferably 3+leaseweb​
✅ Set appropriate TTLs – 3600s (1 hour) standard, lower before changesibm​
✅ Implement DNSSEC – Add cryptographic securityleaseweb+1​
✅ Document DNS records – Maintain configuration backups
✅ Regular audits – Check DNS quarterly for accuracy
✅ Monitor propagation – Verify changes with DNS lookupmxtoolbox​
✅ Use authoritative queries – Test directly against your nameserversmxtoolbox​

Before Making DNS Changes

✅ Lower TTL 24-48 hours early – Speeds propagationibm​
✅ Document current configuration – Enable rollbackmxtoolbox​
✅ Test in staging – Verify new records before production
✅ Plan for downtime – Schedule during low-traffic periods
✅ Notify stakeholders – Communicate planned changes
✅ Prepare rollback plan – Know how to revert if needed

After DNS Changes

✅ Verify with DNS lookup – Check authoritative nameserversmxtoolbox​
✅ Test from multiple locations – Use different DNS servers
✅ Monitor for 48 hours – Track propagation progressibm​
✅ Check related services – Email, subdomains, SSL certificates
✅ Document changes – Update configuration records
✅ Restore normal TTL – After propagation completesibm​

Email Configuration

✅ Configure MX records properly – Include prioritiescloudns​
✅ Add redundant mail servers – Multiple MX for reliabilitycloudns​
✅ Implement SPF – Authorize sending serversprotonvpn+1​
✅ Set up DKIM – Add email signaturesprotonvpn​
✅ Enable DMARC – Define authentication policy
✅ Configure PTR records – Reverse DNS for mail serverscloudns​

Security Best Practices

✅ Enable DNSSEC – Protect against DNS spoofingleaseweb+1​
✅ Add CAA records – Control SSL certificate issuance
✅ Implement SPF/DKIM/DMARC – Prevent email spoofingprotonvpn+1​
✅ Use strong nameserver security – Protect authoritative servers
✅ Monitor for changes – Alert on unauthorized DNS modifications
✅ Limit DNS access – Restrict who can modify records

Frequently Asked Questions

What is DNS and why is it important?

DNS (Domain Name System) is the internet's address book. It translates human-readable domain names like google.com into IP addresses like 142.250.185.46 that computers use.cloudflare+1​

Without DNS:

• You'd need to memorize IP addresses for every websiteibm​
• Email wouldn't know where to deliver messagescloudns​
• Internet navigation would be nearly impossibleibm​

DNS makes the internet usable for humans.cloudflare+1​

How long does DNS propagation take?

Typical propagation: 24-48 hours depending on TTL values.ibm​

Factors affecting speed:

• TTL (Time To Live): Lower = faster propagationibm​
• DNS caching: Old records must expireibm​
• Geographic distribution: Worldwide propagation takes time
• ISP practices: Some ISPs ignore TTL recommendations

Speed it up: Lower TTL to 300 seconds 24-48 hours before changes.ibm​

What does TTL mean in DNS records?

TTL (Time To Live) specifies how long DNS records should be cached.ibm​

Common TTL values:

• 300 seconds (5 minutes): Before planned changes
• 3600 seconds (1 hour): Standard settingibm​
• 86400 seconds (24 hours): Very stable domains

How it works:

• DNS servers cache records for TTL durationibm​
• After TTL expires, fresh query required
• Lower TTL = faster updates, more DNS queries
• Higher TTL = better performance, slower updatesibm​

What's the difference between A and CNAME records?

A Record:cloudns​

• Points directly to IP addresscloudns​
• Can be used for root domain
• Example: example.com → 93.184.216.34

CNAME Record:cloudns​

• Points to another domain namecloudns​
• Cannot be used for root domain
• Example: www.example.com → example.com

Key difference: A record is the final destination; CNAME is an alias.cloudns​

Can I use DNS lookup to find someone's IP address?

You can find the IP address where a domain is hosted through DNS lookup (A/AAAA records).cbabenelux+1​

However:

• You find the server IP, not an individual's personal IP
• Website hosting IPs are public information
• Personal user IPs are not in DNS
• Email addresses don't reveal sender IPs via DNS

For website IPs: DNS lookup works perfectly. For personal IPs: Use "What's My IP" tools instead.

Why do some domains have multiple A records?

Multiple A records provide:cloudns​

Load Balancing:

• Distribute traffic across serverscloudns​
• Improve performance and capacity
• Random selection among multiple IPs

Redundancy:

• Backup servers if primary failscloudns​
• High availability architecture
• Failover capabilities

Geographic Distribution:

• Servers in different locationsibm​
• Reduced latency for users
• CDN-like functionality

This is normal for high-traffic websites and considered best practice.cloudns​

What does "SERVFAIL" error mean?

SERVFAIL (Server Failure) indicates the DNS server couldn't complete your query.

Common causes:

• Nameserver not responding
• DNSSEC validation failurecloudns​
• Misconfigured DNS zone
• Authoritative nameserver offlinemxtoolbox​
• Network connectivity issues

Troubleshooting:

• Try different DNS servers
• Query authoritative nameservers directlymxtoolbox​
• Check domain nameserver configuration
• Verify DNSSEC if enabledleaseweb​

How do I check if my DNS changes took effect?

Use our DNS Lookup Tool:mxtoolbox​

1. Query authoritative nameservers directlymxtoolbox​
2. Check from multiple DNS servers (Google, Cloudflare, etc.)
3. Compare results – Should match if fully propagated
4. Wait for TTL to expire on old recordsibm​
5. Test from different locations globally

If authoritative NS shows new records but public DNS doesn't: Propagation still in progress.ibm​

Related CyberTools for Domain Management

Complement your DNS lookups with these related tools on CyberTools:

🌐 Hostname to IP Converter

• Resolve domain names to IP addresses
• Forward DNS lookup
• Check DNS propagation status

🔄 IP to Hostname Converter

• Reverse DNS lookup functionality
• Convert IPs to domain names
• Verify PTR record configurationcloudns​

📧 MX Lookup Tool

• Dedicated mail exchange record checkercloudns​
• Email server configuration analysis
• Mail server priority verification

🔐 SPF Record Checker

• Validate Sender Policy Frameworkprotonvpn​
• Email authentication testingcloudns​
• Authorized sender verification

📝 TXT Record Lookup

• View all TXT recordsprotonvpn+1​
• SPF, DKIM, DMARC analysisprotonvpn​
• Domain verification records

🔍 WHOIS Lookup

• Domain registration information
• Nameserver details
• Domain ownership data

🛡️ DNSSEC Validator

• Check DNSSEC implementationleaseweb+1​
• Verify cryptographic signaturescloudns​
• DNS security auditcloudns​

🌍 DNS Propagation Checker

• Global DNS propagation testing
• Check from 50+ locations worldwide
• Real-time propagation monitoring

Command-Line DNS Lookup (For Advanced Users)

Windows (nslookup)digicert+1​

text
nslookup example.com
nslookup -type=mx example.com
nslookup -type=txt example.com

Linux/macOS (dig)protonvpn​

bash
dig example.com
dig example.com MX
dig example.com ANY
dig @8.8.8.8 example.com

Linux/macOS (host)

bash
host example.com
host -t MX example.com
host -a example.com

Our web tool is easier: No command-line knowledge required.mxtoolbox​

Start Checking DNS Records Now

Stop guessing about DNS configuration. Get instant, comprehensive DNS record analysis with the CyberTools DNS Lookup Tool.

✅ Completely free unlimited lookups
✅ All DNS record types supportedmxtoolbox+1​
✅ Authoritative nameserver queriesmxtoolbox​
✅ Instant results – no cachingmxtoolbox​
✅ No registration required
✅ Multiple DNS server testing
✅ Export and share functionality
✅ Mobile-friendly interface

Check DNS Records Now →

Need bulk DNS lookups? Contact us about API access for enterprise DNS monitoring, automated testing, and large-scale domain infrastructure analysis.

Have questions? Reach out at support@cybertools.cfd or visit our Contact Page.

The CyberTools DNS Lookup Tool helps thousands of system administrators, web developers, and IT professionals verify and troubleshoot DNS configuration every day. Join them in ensuring reliable, properly configured domain infrastructure.

Related Resources:

• MX Lookup
• Hostname to IP
• IP to Hostname
• WHOIS Lookup
• Network Tools Collection
• DNS Management Guide
• Help Center

1. https://www.cloudflare.com/learning/dns/what-is-dns/
2. https://www.ibm.com/think/topics/dns-lookup
3. https://mxtoolbox.com/DNSLookup.aspx
4. https://protonvpn.com/blog/what-is-dns
5. https://kb.leaseweb.com/kb/products/hosting/domain-name/hosting-domain-name-dns-record-types/
6. https://www.cloudns.net/blog/dns-records-different-types/
7. https://stackoverflow.com/questions/48134705/the-process-of-dns-lookup
8. https://www.cbabenelux.nl/en/news/understanding-dns-and-its-role-in-online-infrastructure
9. https://www.digicert.com/faq/dns/how-does-dns-lookup-work
10. https://www.hostingseekers.com/blog/what-is-dns-lookup-common-tools-and-commands/