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Comtrend ADSL2+ Router CT-5621T

What is the default user ID and Password??????? Can't Login.

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  • wwpauljd Oct 19, 2008

    What is the default user ID and Password for Comtrend ADSL 2+ Router???? Don't Have A User's Manual.

  • wwpauljd Oct 20, 2008

    well see its not just a regular router its a dsl router?//// but anywaY I'll try to reset it...thanx for the info.

  • Anonymous Jan 13, 2009

    i have forgotten my password now what can i do
    please help me out

  • snooter28 Mar 18, 2009

    ok but if i reset it will i have to go back in and configure stuff again because im not familiar with that kind of stuff or will it still work like it should????

  • Anonymous May 23, 2009

    they said invalid user name and password?? why?

  • A Womans Computer Man
    A Womans Computer Man May 11, 2010

    you can find that user manual through comtrend website, under support..



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There's quite serious security problem with this routers (not sure if it applies to exactly this type) 

if your password if not the default you should try other account:
(username / password)
admin / admin
support / support 
user / user 

if you are logged in as a "user" you can't change anything but you can access change password page e.g.

then open source code of this page and inside javascript code you will find your password in plain text
<!-- hide
pwdAdmin = 'admin';
pwdSupport = 'support';
pwdUser = 'user';

Posted on Jan 15, 2010

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I used the following for username and password and it worked!! User name: user, password: user

Posted on Jun 10, 2009

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Try this one Enter your username and password, By default both the username and password are admin. Click the Ok button to log in to your router.. If the default username and password wont work the next step here is to reset the router so it will be back to its default settings with the default username and password....

Don't forget to rate the solution FIXYA thank you...

Posted on Oct 20, 2008


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C est vrai ta demarche et c'est bien mais pour moi j ai trouve ceci pwdAdmin = 'MTIzNDU=';
pwdSupport = 'c3VwcG9ydA==';
pwdUser = 'dXNlcg==';
et apres qlqes lignes
if ( encode64(pwdOld.value) == pwdAdmin )
donc il faut decrypter avec ce site ca fonctionne tu aura le mdp

Posted on Dec 18, 2012

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COMTREND CT-5621T: PPP down and LCP keepalive fail after long time running.
Power off and wait about 10 minutes.
MF should explain more detail and send to or pls!

Posted on Nov 29, 2012

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I nedd driver mordem Comtrend ADSL CT5621T !! Help me !!! Thanks !!

Posted on Aug 01, 2012

Actually, the username and password for that modem (by default) is root / 12345

Posted on Nov 01, 2008

  • anshuamitg Sep 12, 2010

    what is the default user id or password for my beetel 110TC1 ADSL2 ROUTER plz help me its urgent plz mail me at thanks for the help


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