138.ac
Ambiguous Three Digit
Telephone Number Shorthand or Extension

Phone Number Extension 138
or
Phone Number Shorthand 138

138 by itself is ambiguous. ICUC thinks you might have entered an undefined shorthand telephone number abbreviation or a telephone number extension without a preceding telephone number. To make use of telephone number shorthand abbreviations you must first perform a login from this device. After login, depending upon how you have set up your account, here are some valid ways to use three .ac digits:

138.ac Ex: Access web site of recent telephone number who's last three digits are 138
or
a.138.ac Ex: Get definition of and information about area code 138
or
c.138.ac Ex: Calendar for last used telephone number ending in three digits 138
or
e.138.ac Ex: Email last used telephone number ending in three digits 138
or
i.138.ac Ex: Instant Message last used telephone number ending in three digits 138
or
s.138.ac Ex: Get status of last used telephone number ending in three digits 138
or
w.138.ac Ex: Access web site of recent telephone number who's last three digits 138
or
x.138.ac Ex: Access web site of recent telephone extension who's last three digits are 138
or
800.555.1212.138.ac Ex: Access web site of telephone number 800.555.1212 extension 138

more information on telephone number shortcuts, extensions and status codes...