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Spamhaus Releases IPv6 Blocklists Strategy

ID: 60ede376-3c2e-5b66-bcaa-fa7e1bdee3f1

STIX ID: report--60ede376-3c2e-5b66-bcaa-fa7e1bdee3f1

Feed Name: The Spamhaus Project

Date Published: 2011-06-06

Date Updated: 2026-04-30

Author: The Spamhaus Team

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Spamhaus' IPv6 Blocklists Strategy Statement warns that the vast IPv6 address space enables ‘‘spread spectrum’’ spamming that could overwhelm global DNS caches and rDNS, and outlines a two-stage plan to deploy IPv6 DNS-based blocklists using a B-tree design plus complementary reputation and domain lists (and DKIM integration) to protect email filtering while avoiding DNS infrastructure damage.

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