1 2 and 4 are all default tstt passwords, if you manage to get your own ip just do a little trial and error surfing to IPs in the same last octet range, use the default modem password...number 4, get in go into the settings edit, look at the user name (either the person last name or their phone number) look at the password...if is 5/6 numbers 1 or 2 is more than likely it - use tstt mail to confirm...free spamming account
fyi...change your passwords ppls....