How does an ISP add or remove IP ranges from the Policy Block List (PBL)?
How does an ISP add or remove IP ranges from the Policy Block List (PBL)?
An ISP with a PBL Account can remove or add any IP range within their assigned Master Ranges.
To remove a range from a Master Range:
- Tick the checkbox next to the desired the CIDR range(s);
- Click the “Remove selected listings” button.
- Removed PBL Zone Listings will disappear from the PBL in just a few minutes
NOTE: Please be sure to keep all IPs that are not outbound email servers in a PBL Zone Listing!
To remove a partial IP range from a Master Range:
- First, remove the old PBL Zone listing
- Then use the “Add PBL Zone Listing” link on the left-hand side of your PBL account to add the desired CIDR ranges to the PBL Zone Listing
The “Add PBL Zone Listing” link also allows the addition or removal of many CIDR ranges at once, or even to add and exclude many CIDR ranges at the same time. For example, an ISP may need to list around one or more small chunks of IP space used for outbound email servers, in a range that should otherwise be listed.
For example:
192.0.2.0/24 !192.0.2.16/31 !192.0.2.248/29This would list 192.0.2.0 – 192.0.2.15 and 192.0.2.18 – 192.0.2.247 in the PBL Zone Listing, but it would not list 192.0.2.16/31 or 192.0.2.248/29. ( Using the “!” exclusion in front of a CIDR range means “do not list the following CIDR” ) Many ranges and “!” exclusions may be listed in one entry form.
To remove many PBL Zone Listings at once:
- List the entire CIDR range and then quickly delete that range.
- Be sure to tick the checkbox labeled “Overwrite conflicting listings”.
Users with a single IP address (or any CIDR range smaller than /24) must use the single IP removal form, not the ISP Account form.
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