We identified 1 domains pointing to 3.133.28.4.
| Domain | IPv4 | IPv6 | MX and NS |
|---|---|---|---|
| api-prod.ec.openstax.org. | 3.133.28.4 ec2-3-133-28-4.us-east-2.compute.amazonaws.com 3.134.23.2 ec2-3-134-23-2.us-east-2.compute.amazonaws.com 52.15.186.209 ec2-52-15-186-209.us-east-2.compute.amazonaws.com |