Welcome to your link to getting the email address format for employees at 21.

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21.3972225189

Our analytics engine is still looking through the 175M+ email addresses in our records - including those at 21.3972225189. While no single format has been statistically confirmed, take a look at the following addresses for employees and see if you can spot the pattern.
20marsh@21.3972225189

score 0
(found Feb 2015 - )