For Windows 7 & Vista: Close all Internet applications that you are using, such as email client, and web browsers.Click on the Start button (circle) and then "All Programs", and then go under "Accessories", and click on the black icon form the top called "Command Prompt". In the new black window enter ipconfig /flushdns and then hit the ENTER button on your keyboard.This gets all records except DNS_PTR: When I use DNS_ALL as the second parameter to invoke dns_get_record() on the OS of Windows, PHP emits a warning with the message "Warning: dns_get_record(): Type '251721779' not supported in on line blah", and DNS_ANY is always OKAY.Please note that Firewalls and anti malware software detects (and depending on company policies even blocks) DNS_ANY requests. This is because DNS_ANY requests can be exploited for creating "amplification (D)DOS attackes": You send 1 DNS_ANY request and get a huge amount of information back, thus even small requests can result into hugh network load.Now you can start your email client, and any other browsers you have previously stopped.Please, check this article on how to clear your browser cache - which might be also required step in order for you to see your account hosted with us.Even though my DNS is automatically updated when it changes, via the highly versatile ddclient package, the traditional dynamic DNS update protocols (including dyndns.org's) are typically site-specific and non-standard.
Very useful for testing specific servers and also for walking through a recursive resolution.
Using DNS_ALL fails on some domains where DNS_ANY works.
I noticed the function getting stuck on the DNS_PTR record, which caused it to return FALSE with this error: PHP Warning: dns_get_record(): res_nsend() failed in ....
Please, review the following article from Apple on how to flush your DNS for your specific Mac OS X version: https://support.apple.com/en-us/HT202516In Mac OSX Leopard, you can use the command dnscacheutil -flushcache to flush the DNS resolver cache:bash-2.05a$ dscacheutil –flushcache In Mac OSX versions 10.5.1 and before, the command lookupd -flushcache performed the same task:bash-2.05a$ lookupd -flushcache In combination with the above - you may need to reboot your computer and/or clear your browser cache.
The exact steps on how to flush DNS under Linux really depend on the installed Linux distribution, and installed system packages.