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Favorite Tools

This section is a little lonely. You can start adding tools by clicking on your favorite tool's option button in the blue tool titlebar. Select "Add to Favorites" from the menu options. You can pick up to 6 tools to be favorites.

Domain Tools

DNSreport

Options
Learn More

Do I have DNS problems?

Enter zone name, not an IP
1

WHOIS/IPWHOIS Lookup

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Get contact info for a domain/ip

Enter Domain or IP
3

WWW Co-host Tool

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What websites are hosted on this IP?

Enter domain (or IP)
4

Top Level Domain (TLD) Lookup

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How can I find out if a domain is available?

Enter Domain
5

Abuse Lookup

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How do I find abuse contact for a domain?

Enter domain name (hostname)
37

ISP Cached DNS Lookup

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Which DNS servers have cached DNS entries?

Enter IP, domain or host name
7

Website Info

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Learn More

What technical information is gathered from my browser and test packets?

8

DNS Lookup

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How do I lookup a DNS record from a domain?

Enter url, domain, host name or IP address
9

Domain Inspector

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What public records are available for this domain?

Enter domain
10

Request for Comments (RFC) Lookup

Options
Learn More

How can I find out what a RFC number is?

Enter RFC number (eg 821)
13
Get concrete strategies for managing more end customers and devices in your midsized business – with the same number of technicians. Learn more.

IP Tools

Reverse DNS Lookup

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Learn More

How do I find a DNS record for an IP?

Enter IP address
18

Autonomous System Number (ASN)

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How do I find out details about ASNs or the origin ASN for an IP?

Enter Name, ASN or IP
19

DNS Root Server Response Times

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Learn More

What are the stats for my root servers?

20

Decimal IPs

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Learn More

How do I converts a decimal IP (e.g. 2130706433) into an IP?

Enter decimal IP or IP(hostname)
23
Using Spreadsheets to Manage your IP Addresses? Get free IP Address Tracker from SolarWinds to scan, track and consolidate IP address information.

Networking Tools

DNS Timing

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Learn More

Do I have DNS perfomance problems?

Enter domain, host name or IP address
24

DNS Traversal

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Are all of my DNS servers reporting the same results?

Enter domain, host name or IP address
26

CIDR/Netmask

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Learn More

How can I calculates CIDR ranges (eg 192.168.112.0/24)?

Enter CIDR range or IP
28

Local IPv6 Range Generator

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Learn More

How do I generates an 'almost unique' local IPv6 address range, per RFC4193?

29
Network Slow? Get free Netflow Analyzer from SolarWinds and find bandwidth hogs!

Email Tools

Email Test

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Learn More

Do I have a problem sending email to a user or domain?

Enter e-mail or domain
34

Spam Blacklist Lookup

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Learn More

Is my server in a spam database?

Enter IP address
35

Email Path Analyzer

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Learn More

Is this email legitimate?

Need help retrieving a header?
36

SMTP Banner

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Learn More

Is my banner RFC-compliant?

Enter e-mail
38

SMTP Greeting

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Learn More

Is my greeting message RFC-compliant?

Enter e-mail
39

Null Sender

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Learn More

Does my mail server accept a null sender?

Enter e-mail
40

SMTP Abuse

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Learn More

Does my mail server prevent abuse?

Enter e-mail
42

Open Relay

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Learn More

Is my mail server configured as an open mail relay?

Enter e-mail
44

POP Banner

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Learn More

How do I check POP server for Banner?

Enter POP mail server IP

45

POP Status

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Learn More

How do I check the status of the POP mailbox?

Enter POP mail server IP
Enter Username
Enter Password
DNSStuff strongly recommends not to use a real email account for your tests
47

IMAP Banner

Options
Learn More

How do I check IMAP server for Banner?

Enter IMAP mail server IP

48
Email Delays? Score a free Exchange Monitor from SolarWinds to keep an eye on servers, mail queues and host servers.

Featured Tools & Trials

Download free trial tools
Threat Monitor - IT Ops Edition

Monitor, respond, and report security threats in near real time.

Key Features:

  1. Continuously updated threat intelligence
  2. Security Information and Event Manager (SIEM)
  3. Log correlation
  4. Log event archive
  5. Network and Host Intrusion Detection System
  6. Highly indexed log search capabilities
SEE MORE
Download free trial
Pingdom

Make your websites faster and more reliable with easy-to-use web performance and digital experience monitoring.

Key Features:

  1. Uptime monitoring
  2. Visitor insights
  3. Transaction monitoring
  4. Page speed monitoring
  5. Immediate alerts
  6. API
TRY FREE TRIAL

SolarWinds Free Tools for IT Superheroes

View All
Download free tools
TFTP Server

Free TFTP server for reliable and secure network file transfers

Easily push OS images, firmware, and configuration updates. Backup configuration files and transfer files up to 4GB.

Key Features:

  1. Concurrent transfers from multiple devices
  2. Authorize specific or ranges of IPs
  3. Runs as a Windows® service
  4. Powerful, free, and easy to use
DOWNLOAD FREE TOOL or learn more
Download free tools
Solar-PuTTY

Manage remote sessions in a professional way

Connect to any server or device in your network with Solar-PuTTY for Windows®.

Key Features:

  1. Manage multiple sessions from one console with a tabbed interface
  2. Save credentials or private keys to any session for easy login
  3. Automate all scripts you’re using when connection is established
  4. Find your saved session easily thanks to Windows Search integration
  5. No installation is needed
DOWNLOAD FREE TOOL or learn more
Download free tools
Traceroute NG

Perform accurate network path analysis

Are you ready to use the next generation of Traceroute?

Key Features:

  1. Detects path changes
  2. Allows continuous probing
  3. Offers both TCP and ICMP network path analysis
  4. Creates a txt logfile
  5. Supports IPv4 and IPv6
DOWNLOAD FREE TOOL or learn more
Download free tools
Port Scanner

Generate lists of open, closed, and filtered ports for each scanned IP address with Port Scanner

Scan available IP addresses and their corresponding TCP and UDP ports to identify network vulnerabilities.

Key Features:

  1. Reduce scan run times with multithreading
  2. Run a scan from a command line
  3. Define a DNS server of your choice
  4. Save scan configurations
  5. Track user and endpoint device connection activity
  6. View and edit IANA port name definitions
DOWNLOAD FREE TOOL or learn more
Download free tools
Response Time Viewer for Wireshark

Quickly analyze Wireshark® packet capture files to troubleshoot performance issues

Use Response Time Viewer for Wireshark to visualize application and network response time.

Key Features:

  1. Calculate application and network response time
  2. Identify over 1,200 applications
  3. Display data and transaction volume
DOWNLOAD FREE TOOL or learn more
Download free tools
SFTP/SCP Server

Free SFTP server for reliable and secure network file transfers

Securely push OS images and firmware and configuration updates, backup configuration files, and transfer files up to 4GB.

Key Features:

  1. Concurrent transfers from multiple devices
  2. Authorize specific or a range of IPs
  3. Runs as a Windows® service
  4. Powerful, free, and easy to use
DOWNLOAD FREE TOOL or learn more
Download free tools
Over 1 million IT pros rely on SolarWinds free network monitoring, application monitoring, and storage monitoring tools. See the whole collection of free tools
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Instructions:

To analyze email path, copy full email header into this form field and click "analyze header" button below.

Need help retrieving a header?

View Change Log

Email Path Analyzer



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