# # # 🧱 Firewall Blocklist - blocklists/iana-multicast.ipset # # @blocklist https://raw.githubusercontent.com/ConfigServerApps/service-blocklists/main/blocklists/iana-multicast.ipset # @source https://blocklist.configserver.dev/iana-multicast.ipset # @id iana_multicast_ipset # @uuid 045c20fe-9c96-3c0f-aa34-91a3a16634d2 # @updated Sun May 24 13:01:11 UTC 2026 # @entries 268,435,456 ips # 1 subnets # 1 lines # @expires 14 days # @category Special # # IANA Addresses › Multicast Networks # # This list contains IPv4 multicast address space assigned by the # Internet Assigned Numbers Authority (IANA) for multicast and # group-based network communication. # # The dataset currently contains: # - 224.0.0.0/4 (IPv4 multicast space) # # Multicast addresses are used to deliver packets from one sender # to multiple subscribed hosts simultaneously and are commonly used # by routing protocols, streaming systems, service discovery, and # internal network communication services. # # Multicast traffic is not intended for standard public internet # host communication and is typically restricted to controlled # network environments or specialized routing configurations. # # Public-facing traffic involving multicast address space may indicate # spoofed packets, malformed traffic, amplification attempts, or # network misconfiguration. # # This list is sourced from officially assigned IANA special-purpose # address registries and updated periodically as standards evolve. # # 224.0.0.0/4