NSLookup Gateway
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Back to Ted's Webtools. DNS Lookup Utility - Results

Checking 15 U.S. NameServers...

Looking Up: $domain

\n"; while(list($key, $value) = each($serverList)) { exec("./lookup.sh $domain $value", $result); $valid = FALSE; echo "Domain Server: $value
\n"; for($i = 0, $count = sizeof($result); $i < $count; $i++) { echo "\n" . $result[$i] . "\n
"; flush(); $valid = TRUE; } if(!$valid) { echo "Lookup failed. This does not resolve at this nameserver.
\n"; } echo "
\n"; $result = array(); } ?>

Checking Non US NameServers...

Location: Australia

\n"; while(list($key, $value) = each($serverList)) { exec("./lookup.sh $domain $value", $result); $valid = FALSE; echo "Domain Server: $value
\n"; for($i = 0, $count = sizeof($result); $i < $count; $i++) { echo "\n" . $result[$i] . "\n
"; flush(); $valid = TRUE; } if(!$valid) { echo "Lookup failed. This does not resolve at this nameserver.
\n"; } echo "
\n"; $result = array(); } ?> Location: South Korea

\n"; while(list($key, $value) = each($serverList)) { exec("./lookup.sh $domain $value", $result); $valid = FALSE; echo "Domain Server: $value
\n"; for($i = 0, $count = sizeof($result); $i < $count; $i++) { echo "\n" . $result[$i] . "\n
"; flush(); $valid = TRUE; } if(!$valid) { echo "Lookup failed. This does not resolve at this nameserver.
\n"; } echo "
\n"; $result = array(); } ?> Location: Shanghai, China

\n"; while(list($key, $value) = each($serverList)) { exec("./lookup.sh $domain $value", $result); $valid = FALSE; echo "Domain Server: $value
\n"; for($i = 0, $count = sizeof($result); $i < $count; $i++) { echo "\n" . $result[$i] . "\n
"; flush(); $valid = TRUE; } if(!$valid) { echo "Lookup failed. This does not resolve at this nameserver.
\n"; } echo "
\n"; $result = array(); } ?> Location: Moscow, Russia

\n"; while(list($key, $value) = each($serverList)) { exec("./lookup.sh $domain $value", $result); $valid = FALSE; echo "Domain Server: $value
\n"; for($i = 0, $count = sizeof($result); $i < $count; $i++) { echo "\n" . $result[$i] . "\n
"; flush(); $valid = TRUE; } if(!$valid) { echo "Lookup failed. This does not resolve at this nameserver.
\n"; } echo "
\n"; $result = array(); } ?>

Done!

An important thing to remember about DNS queries (as performed by this webtool) is that once one is performed against the name servers above, that information is cached for a predetermined amount of time (set by the person who maintains the authoritative DNS server for that hostname or domainname). This period of time is called the Time To Live, or TTL. Until that TTL has passed, repeatedly looking up a hostname or domainname using this tool will provide no different results. TTL amounts can vary greatly but are most commonly set to be one to three hours in length. You can see how long each of the above DNS servers have until they expire the current results and requery the authoritative dns servers for that hostname.

NEW! Do your own Custom Lookups off of the DNS server that you want.

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