What are the Employee Ranges returned by Enrichment?

To help with lead routing, the employees counts are broken into ranges.

Employee Range
1-10
11-50
51-250
251-1K
1K-5K
5K-10K
10K-50K
50K-100K
100K+

In this example, Clearbit has 17 employees and falls into the Employee Range of 11-50.