Cross Registry Information Service Protocol
Encyclopedia
The Cross Registry Information Service Protocol, or CRISP, is a computer network communications protocol
which has been in development by a working group at the Internet Engineering Task Force
since 2004. It is meant partially as a successor to the WHOIS
protocol, extending it to a notion of "labels" instead of only working on domain name
s and IP address
es.
CRISP can be used to look up authoritative information about a label, such as which organisation owns a given IP block. It defines mechanisms for routing queries and replies to the appropriate CRISP servers, and query types are extensible through the use of XML
to encode all transported data.
The iris.arpa
second-level domain name is reserved for CRISP.
Communications protocol
A communications protocol is a system of digital message formats and rules for exchanging those messages in or between computing systems and in telecommunications...
which has been in development by a working group at the Internet Engineering Task Force
Internet Engineering Task Force
The Internet Engineering Task Force develops and promotes Internet standards, cooperating closely with the W3C and ISO/IEC standards bodies and dealing in particular with standards of the TCP/IP and Internet protocol suite...
since 2004. It is meant partially as a successor to the WHOIS
WHOIS
WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information. The protocol stores...
protocol, extending it to a notion of "labels" instead of only working on domain name
Domain name
A domain name is an identification string that defines a realm of administrative autonomy, authority, or control in the Internet. Domain names are formed by the rules and procedures of the Domain Name System ....
s and IP address
IP address
An Internet Protocol address is a numerical label assigned to each device participating in a computer network that uses the Internet Protocol for communication. An IP address serves two principal functions: host or network interface identification and location addressing...
es.
CRISP can be used to look up authoritative information about a label, such as which organisation owns a given IP block. It defines mechanisms for routing queries and replies to the appropriate CRISP servers, and query types are extensible through the use of XML
XML
Extensible Markup Language is a set of rules for encoding documents in machine-readable form. It is defined in the XML 1.0 Specification produced by the W3C, and several other related specifications, all gratis open standards....
to encode all transported data.
The iris.arpa
.arpa
The domain name arpa is a top-level domain in the Domain Name System of the Internet. It is used exclusively for technical infrastructure purposes...
second-level domain name is reserved for CRISP.