We recommend the following in order to configure your corporate firewall to whitelist the Digify app for access by people in your organization.
1) Please configure hostnames to recognize any subdomain of:
*.digify.com
*.us-west-1.amazonaws.com
2) If you cannot allow the wildcard domains shown in the list above, please allow these specific hostnames:
digify.com
api.digify.com
svc.digify.com
help.digify.com
cdn.digify.com
secure.digify.com
preview.digify.com
3) Please do not whitelist our IP address, but use our site's domain names instead. IP addresses can change without notice.