IBM DNS Blacklist

You would like to check whether your email sending IP address is currently listed on IBM's DNS Blacklist (dnsbl.cobion.com)?

To do so please

• Visit https://exchange.xforce.ibmcloud.com
• Enter your URL/IP in the text field
• Press "Enter"

If you don't agree with the displayed categorization you can send us feedback. To do so, please follow these steps:

• Click on the "Contribute" button
• Select "Does Not Apply" for the category which should be removed
• In case of a URL: If you want to add the URL to another category please click on the button "Suggest a new category for this URL" and choose the corresponding categories
• In case of an IP: If you want to add the IP to another category please select "Applies to an IP address" for the corresponding categories
• Finally click "Submit" at the bottom to send your change request