As with nearly all other D-Link routers, the DIR-605L does not use a default password. The D-Link DIR-605L uses a default username of admin, however.
The DIR-605L's default IP address is 192.168.0.1; this address accesses the router's administration screens.
D-Link did not change any default access data from version A to version B.D-Link
The DIR-605L Default Password Doesn't Work
Change the DIR-605L default password to something complex and hard to guess, because leaving it blank isn't a good security practice.
If you don't know the DIR-605L password, reset the router to its factory default settings — the username and password restore to their simple defaults.
Resetting a router is not the same thing as restarting a router. Resetting will remove all the settings, including any custom password or username, effectively reconfiguring the software back to factory defaults. This process is different from restarting, which is simply shutting the device down and then powering it back on.
Here's how to perform a reset:
Turn the DIR-605L around so you have full access to the back of the router.
Find your way to the far right side of the back of the router, next to the right antenna, to locate the recessed Reset button.
Press and hold the Reset button for 10 seconds. You may need to use a paperclip or other small, pointy tool to get through the hole.
Give the router an additional 30 seconds to cycle through the reset procedure and power back on.
Remove the power cable from the back of the DIR-605L for just a few seconds and then plug it back in.
Wait another 30 seconds for the router to finish starting up.
You can now use the default information from above (admin username and a blank password) to get back into your router at the http://192.168.0.1 address.
Create a new password for the router and save it somewhere safe so you always have access to it, like in a free password manager.
Now that the D-Link router has been reset, all the custom options you configured in the router, like the wireless password, etc., have been lost and must be reconfigured.
Try backing up the router's configuration after you've customized all the settings. If you ever need to restore the router again, you can then just reload all those options. Access the Maintenance > Save and Restore Settings page.
What to Do When You Can't Access the DIR-605L Router
Like the default username and password mentioned above, the DIR-605L, like all routers, have a default IP address — 192.168.0.1 in the case of this one. Also, as with the login credentials, you're free to change the default IP address to something else.
If you're unable to access your D-Link DIR-605L router because you've forgotten what you customized the IP address to, finding it is easier than resetting the entire router. All you have to do is find the default gateway that a computer connected to the router is configured to use.
D-Link DIR-605L Firmware & Manual Links
The D-Link DIR-605L support page contains all the information about the DIR-605L router that D-Link offers, including software downloads, documents, support videos, recent firmware releases, and FAQs.
Since there are two hardware versions of the DIR-605L router, there are also two different user manuals. Once you've chosen the version (A or B), you'll see a download link for the user manual. The default credentials and IP address mentioned above are the same for both versions of the DIR-605L, but other details between the two versions may differ.
Having two different hardware versions means you must be certain to download the right firmware too since both versions use different firmware.
You can find the right hardware version for your DIR-605L on either the bottom or back of the router; look for the letter next to H/W Ver. on the product label.