5 free lookups. No credit card required.
The most common HackerRank email format is [first] (ex. jane@hackerrank.com), which is being used by 64.2% of HackerRank work email addresses. Other common HackerRank email patterns are [first].[last] (ex. jane.doe@hackerrank.com) and [last] (ex. doe@hackerrank.com). In all, HackerRank uses 9 work email formats.
| Email Format | Example | Percentage |
|---|---|---|
| [first] | jane@hackerrank.com |
64.2%
|
| [first].[last] | jane.doe@hackerrank.com |
22.6%
|
| [last] | doe@hackerrank.com |
8.0%
|
| [first_initial][last] | jdoe@hackerrank.com |
1.7%
|
| [first][last] | janedoe@hackerrank.com |
1.5%
|
| [last][first_initial] | doej@hackerrank.com |
1.1%
|
| [first][last_initial] | janed@hackerrank.com |
0.5%
|
| [first_initial].[last] | j.doe@hackerrank.com |
0.3%
|
| [first_initial][last_initial] | jd@hackerrank.com |
0.1%
|