"[CIDR range] conflicts with other Policy Block List (PBL) master records." What does this error mean?
"[CIDR range] conflicts with other PBL master records." What does this error mean?
When an ISP requests an IP range to be assigned to its PBL Account, and that range is already assigned to another ISP, the following error message is generated: “[CIDR range] conflicts with other PBL master records.”
This can happen if “Example ISP” gets its IPs from a “Bigger Upstream Network”, and that “Bigger Network’s” PBL Account claims their full allocated IP ranges including the parts which they delegate to “Example ISP”, then we can’t assign those delegated ranges to “Example Company’s” PBL Account. The best thing to do in this situation is to contact the Bigger Upstream Network and discuss it with them.
This scenario can also happen when an ISP has returned its IP ranges to its Regional Internet Registry, and has not yet deleted those ranges from the PBL. In this case, the ISP which has been newly assigned those IPs may contact Spamhaus directly to obtain control of those Master Ranges. The contact email address is available in your PBL Account.Back