LEGACY - allocated by the central Internet Registry (IR) prior to the Regional Internet Registries (RIRs). This address space is now administered by individual RIRs as noted, including maintenance of WHOIS Directory and reverse DNS records. Assignments from these blocks are distributed globally on a regional basis.
192.0.2.0/24 reserved for TEST-NET-1 [RFC5737]. Complete registration details for 192.0.2.0/24 are found in [IANA registry iana-ipv4-special-registry].
184.108.40.206/24 reserved for 6to4 Relay Anycast [RFC3068] Complete registration details for 220.127.116.11/24 are found in [IANA registry iana-ipv4-special-registry].
18.104.22.168/32 reserved for 6a44 Relay Anycast [RFC6751] (possibly collocated with 6to4 Relay at 22.214.171.124/32 - see [RFC3068] section 2.4)
192.168.0.0/16 reserved for Private-Use Networks [RFC1918]. Complete registration details for 192.168.0.0/16 are found in [IANA registry iana-ipv4-special-registry].
192.0.0.0/24 reserved for IANA IPv4 Special Purpose Address Registry [RFC5736]. Complete registration details for 192.0.0.0/24 are found in [IANA registry iana-ipv4-special-registry].
DNS Resource Records
In this section you will find important DNS resource records for www.marshfieldclinic.org. SOA records, Name Server records, and MX records are included when available. Additional supporting data includes serial numbers, refresh rates, retry times, TTL, priority, and length to expire will be shown.