Difference between Marketo's "trusted IP" and the standard IP?

[Anonymous]

Autumn, Can a single dedicated IP be used across mutlipe workspaces? 

[Kiersti_Esparz1]

Yes, a single dedicated IP can be used across multiple workstations or Marketo subscriptions.  The only limitation is that the workstations must be set up in the same datacenter for this to happen.  In most cases this is the case for accounts that are looking to share a dedicated IP.