"PBL Zone Listing" vs. "Master Range" - What is the difference?
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"PBL Zone Listing" vs. "Master Range" - What is the difference?
A “PBL Zone Listing” is a subset of a “PBL Master Range”.
PBL Zone Listing
- “PBL Zone Listing” refers to subsets of Master Ranges which are intended for inclusion in the PBL.
- “PBL Zone Listings” are IP addresses that are listed in the DNSBL zone pbl.spamhaus.org
- Email sent from outbound email servers running on IP addresses listed in the DNSBL pbl.spamhaus.org (PBL Zone Listings) may be rejected by any server using PBL or Zen data.
- Authorized ISPs may add or remove any IP range(s) from the subset PBL Zones Listings that are within their Master Ranges.
Master Range
- A “Master Range” is typically the same as the allocation the ISP is granted by their Regional Internet Registry (RIR)
- “Master Ranges” are the IP ranges assigned to a PBL account by Spamhaus, and define the IP ranges in which that account is authorized to create PBL Zone Listing records;
- Spamhaus assigns Master Ranges based on information gathered from Whois, rWhois or rDNS after the application for that range is received.
- None, some, or all IPs in a Master Range may be listed in PBL Zone Listings by the ISP at their discretion, as long as the changes remain within the guidelines expressed previously.
NOTE:
- Changes to Master Ranges can only be requested by entities who are authorized.
- Once an ISP requests and is granted authority over their Master Range(s), and Spamhaus validates that request, ISP can change “PBL Zones Listings” within their “Master Range(s)”.
- Such changes will become active after the next zone build, within 15 minutes of the change.