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RWhois is Refferal Whois, the separate protocol & standard from either Whois. Rwhois should non exist as confused by using the ability for a Whois server to reffer responses to an additional server, though RWhois has that equivalent ability. Withinside the nutshell, RWhois extends the construct of Whois inside the hiearchal fashion, potentially creating a formulas like thereto of DNS (in terms of layout, non functionality).

Sustaining Whois, look-ups of assigned IP location space is typically limited to the big CIDR blocks (i.e. /24, /22, /16 & such). Sole a major RIRs and Domain Registrars run Whois servers. Thus, e.g., searching for out what specific client of Sprint's owns a particular IP would normally require directly contacting Sprint and requesting the information.

However whenever Sprint ran a RWhois server, wise shoppers may apply a RWhois client to look-search the specific IP & buy out exactly what client of Dash's got that particular IP location assigned to the children. RWhois is meant to exist as redo by potentially little LIRs, to provided more coarse-grained reference all about IP location assignment.

Ideally, RWhois would replenish Whois, providing an unionized hiearchy of referrals in which wise shoppers can attach to any RWhois server, asking the look-search & exist as automatically re-directed to the right server(s). Nonetheless, when a technical functionality is in situ, adoption of the RWhois standard has been infirm.

Network Solutions RWhois Development Page
Official NSI RWhois development and distribution site. This is the main location for RWhois discussion and development of both the 1.0 and 1.5 versions of the protocol.