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Quick Base keeps an up-to-date Sender Policy Framework (SPF) record for all email servers used to send email for the quickbase.com domain. If you use SPF, you can adhere to your organizationÕs spam filtering policy without having to whitelist the IP addresses of approved senders. Important: SPF is our recommended and supported method for spam filtering.
Since the IP addresses of email servers can change without notice, customers should no longer whitelist IP addresses to allow Quick Base emails to be received via IP address. This list is provided here for a limited time only. See http://en.wikipedia.org/wiki/Sender_Policy_Framework
for more information on SPF. If your organization does whitelist email IP addresses, you should plan to implement SPF as soon as possible. You can temporarily whitelist the current IP addresses below; however, relying on this published list will not guarantee interruption-free service. Due to Quick Base moving to new hosting facilities, the following IP addresses can be white-listed as of May 6, 2017:
See also: What is Quick Base's IP address?