If you have a firewall in place that restricts access to certain domains, learn which domains need to be allowed to use Coda seamlessly.
If you or your organization uses a firewall to restrict access to certain domains, you may run into issues when trying to access Coda. In particular, you may run into an error message that states:
We found a problem. There was an error retrieving files from our servers. Please check if you have a firewall preventing access to the following host.
Allow required domains
To resolve this and gain access to Coda, you will need allow the following domains to your firewall's allowed list:
coda.io
.coda.io
codacontent.io
codahosted.io
If you continue experiencing issues after allowing the above domains, please feel free to contact Coda's support team at support@coda.io.
Prepare for the shift to Superhuman Docs
Coda is becoming Superhuman Docs on July 8th, 2026. Your existing docs will continue to work as-is, and any coda.io links will automatically redirect to docs.superhuman.com. However, if your organization uses an allow list or blocks the new domain, org members may temporarily be unable to access their docs on launch day.
Therefore, we recommend you add the following domains to your allow list before July 8th:
- superhuman.com
- *.superhuman.com