How do you flush DNS? What is the way to first view your DNS entries?
To flush DNS records from your computer cache it is important that you know what command line tool is required by you to execute your command to flush dns — It is time you get familiar with IPCONFIG
What is IPCONFIG ? ipconfig (Internet Protocol Configuration) in Microsoft Windows is a console application that displays all current TCP/IP network configuration values and refreshes Dynamic Host Configuration Protocol DHCP and Domain Name System DNS settings. Other GUI tools named winipcfg and wntipcfg also exist in previous OS like windows 98 & Windows Millenium. ipconfig in Mac OS X serves as a wrapper to the IPConfiguration agent, and can be used to control the BootP and DHCP client from the command line interface. Like most UNIX-based operating systems, Mac OS X also uses ifconfig for more direct control over network interfaces, such as configuring static IP addresses. In Unix and Unix-like operating systems, the ifconfig command is used instead, though the purpose is identical — that to display configuration of Internet Protocol used by the host computer.
You may get the information yourself by following following steps on Windows machine
Start > Run > CMD > C:\> ipconfig would list adapter information for your computer.
Mentioned below is a list of switches and syntax for using IPCONFIG on your computer (to view yourself, go to start-> Run -> CMD and on command prompt type C:\>ipconfig /? )
USAGE:
ipconfig [/? | /all | /renew [adapter] | /release [adapter] | /flushdns | /displaydns | /registerdns |
/showclassid adapter | /setclassid adapter [classid] ]
where
adapter Connection name
(wildcard characters * and ? allowed, see examples)
Options:
/? Display this help message
/all Display full configuration information.
/release Release the IP address for the specified adapter.
/renew Renew the IP address for the specified adapter.
/flushdns Purges the DNS Resolver cache.
/registerdns Refreshes all DHCP leases and re-registers DNS names
/displaydns Display the contents of the DNS Resolver Cache.
/showclassid Displays all the dhcp class IDs allowed for adapter.
/setclassid Modifies the dhcp class id.
The default is to display only the IP address, subnet mask and default gateway for each adapter bound to TCP/IP.
For Release and Renew, if no adapter name is specified, then the IP address leases for all adapters bound to TCP/IP will be released or renewed.
For Setclassid, if no ClassId is specified, then the ClassId is removed.
Examples:
> ipconfig … Show information.
> ipconfig /all … Show detailed information
> ipconfig /renew … renew all adapters
> ipconfig /renew EL* … renew any connection that has its name starting with EL
> ipconfig /release *Con* … release all matching connections, eg. “Local Area Connection 1″ or “Local Area Connection 2″
Do give your feedback and share your views on this utility IPCONFIG !!!
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Filed under: DNS, Flush DNS, Technology | Tagged: display dns, displaydns, Flush DNS, Flushdns, ipconfig
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