MERCHANT CATEGORY/CODE LOOKUP

What is this tool?

Find merchant category from merchant code on CC bill

CHARGEBACK REASON CODE LOOKUP

What is this tool?

Find the reason for a chargeback

PHONE LOOKUP

What is this tool?

Look up info on a phone exchange

SPEED TEST

What is this tool?

Speed test measures the performance of your Internet connection. If you are experiencing performance issues use this tool to get a good understanding of what it really is.

How do the results help me?

Measures speed of your connection - Download/Upload/Latency

AREA CODE AND ZIP LOOKUP

What is this tool?

Find distances between ZIPs and/or phone numbers.

DNS Root Server Response Times

What is this tool?

This tool is a summary that shows stats for the root servers, .com/.net parent servers, and the .org parent servers. It shows both the average percent delay (the average time divided by the best time), and the average delay in milliseconds (calculated by subtracting the best times from the average times).

BIN LOOKUP

What is this tool?

Find country of a credit card.

SSN DATA

What is this tool?

When and where a SSN was issued.

DATE INFO

What is this tool?

Find out date information. This tool will generate an HTML calendar for a specified year and also give moon phase/tide information.

What is this tool?

The WHOIS and IPWHOIS toolsfind contact information for the owner of specified domain/hostname. Contact email addresses will not be obfuscated, as they are on the public page. IPWHOIS is similar to WHOIS - finds contact information for the owner of the domain associated with the specific IP address.

How do the results help me?

• To Track Down Spammers
• To Get Contact Info for the Owner of a Domain
• To Report a Problem with a Domain

The advanced version activated if you have the Professional Tool Set also includes a WHOIS/IPWHOIS for server level. The Server field can be used for specialized lookups, such as checking to see if an old registrar still has WHOIS data for a domain, or by checking some non-domain/IP-related-stuff that uses the WHOIS protocol.

Help me find this tool

What is this tool?

This tool will show just about as much information as we can find out about an IP address, including the location, reverse DNS, ASN, etc.

How do the results help me?

Curious about where an IP address is located? This tool is a catch-all of cached information to help you get an idea of the general area an IP address is located it. The answer isn't authoritative, but makes a good first-glance with a useful map display of the general location.

What is this tool?

Tracert (also called traceroute) will trace the route that packets take from one destination to another. The tool here will trace the route that a packet takes from our web server to the destination that you enter (either a host name, such as www.example.com, or an IP address). The results display a list of routers traversed (the path taken) for a packet from our web server to reach a particular destination on the network. A timeout can be set if your internet connection is very slow.

How do the results help me?

• Network Troubleshooting
• Response Times

This tool is useful for making sure that packets are making it to the intended destination, or at the very least the gateway to the intended destination. Good for discovering basic connectivity problems.

Country IP Range Lookup

What is this tool?

Enter a country code or country name. This tool will identify IP addresses known to be in use in the specified country.

This tool will check a website to make sure that the HTML code is set up properly, and will see if any errors or warnings are detected.

Enter the number of bits you wish the random number to have. This will generate a random number with a length in the specified bit length.

RFC Database Lookup

What is this tool?

Enter an RFC number. This will pull that RFC from our database for analysis.

URL DEOBFUSCATOR

What is this tool?

Have you ever seen a weird URL like http://www.example.com@2130706433:1234/%2a? You'd think that the spammer was sending you to www.example.com, but he isn't -- this one is really going to an IP address. The URL deobfuscator will turn those weird URLs into human-readable ones.

How do the results help me?

• Combating Phishing Attacks
• Identifying Spam Sources

Helps find the source of phished URLs or spoofed spam headers.

Country TLD Lookup

What is this tool?

Enter a country code top-level domain (ex. .uk, .de, .nl). This will identify which country that TLD belongs to.

Enter a Punycode or Unicode domain. This tool will translate punycode and unicode domains into an exploded format.

Enter an IP address, MAC address and WOL port. This tool will send a Wake-on LAN Magic Packet to test if your WOL system is responding.

DECIMAL IPS

What is this tool?

This tool converts a 'decimal IP' (such as 2130706433) to 'real IP' (127.0.0.1) and 'real IP's to 'decimal IP's.

How do the results help me?

Useful for translating forged spam headers into an octal IP address, which is more useful for follow up actions.

Enter an IP address. This tool will query the third party Routing Assets Database and report whether a particular IP address is universally routable or not.

Free E-Mail Address Lookup

What is this tool?

This tool will check to see if an E-mail address is on a known free E-mail domain, such as hotmail.com. This can help you determine whether or not an E-mail address is someones primary E-mail address. It just checks the domain, so you can either enter the E-mail address (user@example.com) or the domain (example.com), and you will get the same results.

WHAT A WEBSITE KNOWS ABOUT YOU

What is this tool?

This tool will find out as much information about your operating system and browser based on information gained from the browser itself and test packets.

DOES YOUR COMPUTER LEAK NETBIOS

What is this tool?

On older Windows operating systems, NETBIOS information could be leaked if file sharing security wasn't set up properly. This tool will check to make sure that this information isn't leaked and available to malicious 3rd parties.

DNS Traversal

What is this tool?

This tool is essentially similar to the "dig" tool and is more advanced than our nslookup. When you change your name servers and need to verify your changes are being seen throughout the world the traversal tool looks at what each root server is returning. If any are not correct then all subsequent DNS servers that look up your domain from that root server are going to be getting incorrect information.

How do the results help me?

Displays which DNS servers the world thinks are responsible for your domain and what information they are returning.

VectorTrace

What is this tool?

VectorTrace is unique in that it allows for traceroutes to be performed simultaneously from multiple locations and that information displayed in context of each other. For example, on initial launch VectorTrace will trace from three discrete locations and display the route taken to the requested destination.

How do the results help me?

This will allow the user to understand critical common points in the path. This will help identify the most critical points with poor performance so that you can remedy that situation by working with the administrators of that point or giving you the information to choose a better location for the final destination. As the product matures we will offer options to present the data on a map and even automate and alert on the quality of the paths taken.

What is this tool?

The DNS Timing Report will test to see how long it takes for your DNS servers to respond, taking many factors into consideration (timeouts, lame delegations, etc.), and gives you a score (from an F to an A+). It then lists any problems (such as a slow response, timeouts, etc.). Normally, you would enter www.example.com and use the A record (you can use other hosts or records, but the timing is typically the same). This test can be useful in comparing two different web hosts that provide DNS service.

How do the results help me?

• Query Response Times
• DNS Troubleshooting

This tool is useful for troubleshooting response time issues identified by users or other tools like DNSreport and help determine where delays occur.

What is this tool?

This test will check all known spam databases, to see if the IP address you enter is listed with any of them. It will also report and notes that the spam databases give out about the domain, such as a URL to find out more information at. It will also check to see if there is a missing reverse DNS entry for the domain.

How do the results help me?

It tells you if your mail server IP is listed on any popular Spam Blacklists. Instructions on how to be removed from these lists can be found on the websites of each specific blacklist. You can access these sites by clicking the links provided in our test.

Help me find this tool

What is this tool?

This test will see if a reverse DNS entry exists for an IP address, and will also show you how the entry is found (the route of DNS servers that is taken), and who to contact to get a reverse DSN entry if none is found. The RFCs say that you should have a reverse DNS entry for every host on the Internet. If a mail server is missing a reverse DNS entry, other mail servers may reject mail from it. It supports IPv6 reverse DNS lookups, too.

How do the results help me?

• To get Info about an IP causing problems
• To verify that a mail server has a Reverse DNS Entry
• To Gather Data about who is visiting your web site

The advanced version features the server field allows you to test the reverse DNS on a new DNS server.

Help me find this tool

What is this tool?

The domain name system (DNS) stores and associates many types of information with registered domain names (like dnsstuff.com). It also translates domain names to IP addresses and records the mail servers that accept mail for each domain. The DNS Lookup test performs a standard DNS lookup, and returns details about the specified record type(s) as well as additional useful information about the domain's DNS entries. Example: For the A record type, a DNS lookup provides information about how the domain or host name is resolved to an IP address (example, 192.168.1.1).

*To lookup a PTR record, be sure to populate the "enter domain or hostname" field in the proper format for a PTR record (i.e., ip_in_reverse_order.in-addr.arpa). You may find it easier to use our Reverse DNS Lookup tool to lookup PTR records.

How do the results help me?

• To Verify Your DNS Entries Typically, you'll use this tool to make sure that your DNS entries are correct (for example, making sure that the A record for your domain points to the IP address of your website).
• To Determine the Mail Servers for Particular Domain You might use this tool to find out what server(s) accept email for a specific domain (by doing an MX record lookup).

• To Determine Whether the Domain Restricts Who Can Send email You might use this tool to determine the SPF record for a domain (by looking up the TXT record for the domain), to see if the domain tries to restrict who can send email using the domain.

Help me find this tool

IPWHOIS

What is this tool?

This test will see if a reverse DNS entry exists for an IP address, and will also show you how the entry is found (the route of DNS servers that is taken), and who to contact to get a reverse DSN entry if none is found. The RFCs say that you should have a reverse DNS entry for every host on the Internet. If a mail server is missing a reverse DNS entry, other mail servers may reject mail from it. It supports IPv6 reverse DNS lookups, too.

How do the results help me?

• To Track Down Spammers
• To Get Contact Info for the Owner of a Domain
• To Report a Problem with a Domain

What is this tool?

Ping checks to see how long it takes packets to get from one Internet host to another. Note that it is highly dependent on the connection speed of both hosts (as well as server load, and the load of routers along the way). The tool here will report the time that it takes a packet to go from our web server to the host you enter. Note that tracert almost always provides more useful information. For IPv6 pings, enter the IPv6 address or the hostname preceded by a colon (':host.example.com').

How do the results help me?

• Network Troubleshooting
• Response Times

Similar to the traceroute tool, this will help you test basic connectivity for your domains and IPs. It will not trace the path of the packet, however.

CIDR/NETMASK

What is this tool?

This tool is designed to show you information about a CIDR range, like 192.168.0.0/16 (such as the netmask to use, and the lowest and highest IPs in the range). However, you can also enter a single IP address such as 192.168.114.112 and see all the possible CIDR ranges, or enter just a CIDR such as /24.

How do the results help me?

• Network Administration

CIDR ranges can sometimes be difficult to figure out just by seeing the proper notation. This tool removes all doubt by doing the calculation for you and displaying the entire range. Useful for administrator who needs to map a subnet.

What is this tool?

This tool lets you look up a DNS record at the DNS servers of many popular Internet providers. This lets you see which one(s) have cached DNS entries. That way, if you just made a DNS change, you can see when major ISPs will detect the change. Note that this test is specially designed so that it instructs the DNS server not to add the DNS record to its cache, if it is not already there (so future lookups will not be spoiled).

How do the results help me?

• DNS Troubleshooting

If you want to make sure that your DNS entries are propagating in a timely manner, this tool can help you determine who knows about your DNS changes and who doesn't.

ABUSE LOOKUP

What is this tool?

This tool lets you look up the E-mail address for a domain that is responsible for abuse complaints. For example, if you receive an abusive E-mail from a user with the address 'user@example.com', you would enter 'user@example.com' or just 'example.com'. You will then find out the address you can send your complaint to.

How do the results help me?

Track down who to contact when you receive spam and need to report it. This tool will tell you who to contact at the offending firm.

FREE EMAIL LOOKUP

What is this tool?

This tool will check to see if an E-mail address is on a known free E-mail domain, such as hotmail.com. This can help you determine whether or not an E-mail address is someone's primary E-mail address. It just checks the domain, so you can either enter the E-mail address ('user@example.com') or the domain ('example.com'), and you will get the same results.

How do the results help me?

• Fighting Spam

Want to know if that return email address is from a free email service? Use this tool to find out if it is, and then take action.

What is the tool?  

DNSreport, our flagship tool, provides comprehensive information (55 tests to be exact) about any specified domain – a full diagnostic health check from external view. A very large percentage of domains have configuration problems. DNSreport helps you pinpoint your issues and even offers RFC compliant mitigation steps to help you fix them - fast.

How do the results help me?

• Parent Tests
• Name Server Tests
• Start of Authority (SOA) Tests
• Mail Exchanger (MX) Tests
• Mail Tests

• WWW Tests

Help me find this tool

SSL EXAMINATION

What is this tool?

This tool provides details about the SSL used by a domain (or IP), such as versions of SSL (or TLS) are used (ex. SSLv2, SSLv3, TLS 1.0 etc),which cipher specs are used, who issued the security certificate and who it was issued to, etc.

This tool will examine an IP address to find out whether it is SSL/TLS certified. It will also display SSL version information and basic information about the current certificate. This test will find certificates for SSL versions 2 and 3, as well as TLS.

Provide a domain name, or an IP address to run the query.

How do the results help me?

• Server diagnostics
• Network administration

Useful for determining a server's SSL version and other key information about your SSL certificate. Test to make sure your IP is secured by SSL/TLS and make sure that the version is up to date.

TOP LEVEL DOMAIN LOOKUP

What is this tool?

This tool takes a domain name, and finds out if it is registered on any of the other 200+ TLDs (Top Level Domains). For example, entering "example" might show that example.ca, example.com, example.net, and example.org are all taken.

How do the results help me?

• Domain monitoring

Is the domain you are looking for available for .com? How about .biz? Use this tool to find out whether it's in use or not, quickly and efficiently.

Enter a domain name. This tool will perform a WHOIS lookup on the specified domain and output it in a standardized format, as opposed to the varied default formats (dependent on the registrar).

FIND NEARBY IPS

What is this tool?

This tool shows what other nearby IPs a computer uses. For example, if a website is on the IP 192.0.2.80, this tool might show that the computer handles all IPs between 192.0.2.80 and 192.0.2.87.

How do the results help me?

• Fighting Spam
• Phishing prevention

With this tool we try out best to determine what other IPs are part of an IP block, so that you can either add them to a spam blacklist, or a phishing warning system.

WEB SITE HTTP HEADERS

What is this tool?

This tool examines a website's HTTP headers and extracts information about the web server version and displays key parameters of the server's configuration. It also explains what each HTTP header is used for, for headers such as web server version, whether the server can handle range requests, content-type, and whether an attempt was made to create a cookie.

How do the results help me?

• Network administration
• Domain administration

Useful in determining whether certain features of a web server or proxy server are active. Make sure that your proxies are sending the right header information!

ASN INFORMATION

What is this tool?

Enter a valid ASN or IP address. This tool will discover important information about about an IP address' ASN (Autonomous System Number). It will display which AS the IP belongs to, the maximum range of the AS, and which IP registrar issued the ASN. The tool will also display how many connections within that AS have connected to DNSstuff.

How do the results help me?

• IP administration
• Spam Prevention
• Fighting Spam

Use this tool to query the IP registrar's database for information about a block of IPs, complete with contact information. Useful for escalating a spam complaint or verifying the status of one's own IP block.

ASN WHOIS

What is this tool?

Enter a valid ASN (Autonomous System Number) and this tool will retrieve information about it from the qualified IP registrar it belongs to.

How do the results help me?

• IP administration
• Spam Prevention
• Fighting Spam

Use this tool to query the IP registrar's database for information about a block of IPs, complete with contact information. Useful for escalating a spam complaint or verifying the status of one's own IP block.

MAC ADDRESS

What is this tool?

Enter a MAC address, or a network device manufacturer and this will pull up available information related to that manufacturer. This tool will not remotely locate or detect network hardware.

How do the results help me?

• Network administration

Want to know if the MAC address connecting to your network is valid or spoofed? This tool can help you find out whether it's a genuine hardware manufacturer and eliminate that line of inquiry.

ZONE FILE DUMP

What is this tool?

This tool will attempt to initiate a DNS zone transfer with all DNS servers for a domain until it finds one that is willing to perform the zone transfer. A zone transfer sends all of the DNS records for a domain. Many DNS servers are set up not to allow zone transfers, so be sure that your target nameserver allow anonymous zone transfers before attempting to use this tool.

Enter a text string and this tool will search the newsgroup news.admin.net-abuse.sightings for that string. For researching spammers.

A catch all tool that will do lookups for IP addresses, IPv6 addresses, CIDR ranges, decimal IPs, E-mail addresses, domain names, ASNs, URLs, MAC addresses, and a few other things. Not for a specific purpose.

SPF

What is this tool?

This tool will test your domain and determine whether it is using a type 99 SPF record to transmit SPF information to sending mail servers. Please note that this tool will not check for an SPF string as a TXT record.

How do the results help me?

• Mail administration
• Mail troubleshooting

If you have a type 99 SPF record in your DNS, use this tool to make sure it's visible and whether the string is formatted correctly.

This tool will take a compressed IPv6 address and expand it to its full 128-bit notation.

This tool will take an expanded IPv6 address and remove empty octets (0000) from it and replace them with :.

This tool will show just about as much information as we can find about an IPv6 address.

This tool will convert a valid IPv4 address into a valid IPv6 address.

This tool will give you complete information about a range of IPv6 addresses using CIDRnotation (ex. 2003:db8::/48)

RFC4193 LOCAL IPv6 RANGE GENERATOR

What is this tool?

IPWHOIS

What is this tool?

This test will see if a reverse DNS entry exists for an IP address, and will also show you how the entry is found (the route of DNS servers that is taken), and who to contact to get a reverse DSN entry if none is found. The RFCs say that you should have a reverse DNS entry for every host on the Internet. If a mail server is missing a reverse DNS entry, other mail servers may reject mail from it. It supports IPv6 reverse DNS lookups, too.

How do the results help me?

• To Track Down Spammers
• To Get Contact Info for the Owner of a Domain
• To Report a Problem with a Domain

Reverse DNS lookup

What is this tool?

This test will see if a reverse DNS entry exists for an IP address, and will also show you how the entry is found (the route of DNS servers that is taken), and who to contact to get a reverse DSN entry if none is found. The RFCs say that you should have a reverse DNS entry for every host on the Internet. If a mail server is missing a reverse DNS entry, other mail servers may reject mail from it. It supports IPv6 reverse DNS lookups, too.

How do the results help me?

• To get Info about an IP causing problems
• To verify that a mail server has a Reverse DNS Entry
• To Gather Data about who is visiting your web site

The advanced version features the server field allows you to test the reverse DNS on a new DNS server.

DNSreport (Demonstration version only)

What is the tool?

DNSreport, our flagship tool, provides comprehensive information (55 tests to be exact) about any specified domain – a full diagnostic health check from external view. A very large percentage of domains have configuration problems. DNSreport helps you pinpoint your issues and even offers RFC compliant mitigation steps to help you fix them - fast.

How do the results help me?

• Parent Tests
• Name Server Tests
• Start of Authority (SOA) Tests
• Mail Exchanger (MX) Tests
• Mail Tests
• WWW Tests