1992-11-23T00:00:00-05:00https://rdap.arin.net/registry/ip/198.18.0.0[https://whois.arin.net/rest/net/NET-198-18-0-0-1]198.19.255.255NET-198-18-0-0-1SPECIAL-IPV4-BENCHMARK-TESTING-IANA-RESERVED15198.19.255.255IANA Special UseIU198.18.0.0falsehttps://whois.arin.net/rest/org/IANAhttps://whois.arin.net/rest/net/NET-198-0-0-0-0Addresses starting with "198.18." or "198.19." are set aside for use in isolated laboratory networks used for benchmarking and performance testing. They should never appear on the Internet and if you see Internet traffic using these addresses, they are being used without permission.
This assignment was made by the IETF, the organization that develops Internet protocols, in RFC 2544, which can be found at:
http://datatracker.ietf.org/doc/rfc2544198.18.0.02013-08-30T14:35:51-04:004