- Shared Whois Project
The Shared Whois Project (SWIP) is the process used to submit, maintain and update information to ensure up-to-date and efficient maintenance of
WHOIS records, as structured in RFC 1491. The process updates WHOIS to contain information regarding what organization is using a specificIP address , or a specific block of addresses. Additionally, it provides means to track the use of an organization's current allocations of IP addresses, so that additional allocation of IP addresses may be justified and usage reports or case studies may be done.SWIP must be used within seven days of any reassignment of an IP address space to a downstream customer to:
* Provide new reassignments of blocks of 8 or more IP addresses
* Delete existing reassignments, or
* Modify data connected to existing reassignments.In contrast, an organization is not required to submit a SWIP template for fewer than 8 IP addresses.
Allocations, assignments or reassignments of blocks of 8192 addresses and more must be approved by
ARIN beforehand. ARIN does not maintain inverse mapping for assignments smaller than 256 addresses. Companies assigned a blocks of 65536 addresses or more will be responsible for maintaining all IN-ADDR.ARPA domain records for their customers.There are two types of registration. The first is an "allocation", for blocks of IP addresses which will later be reallocated or reassigned to third parties. The second is an "assignment", for blocks that will not be reassigned, or the recipient is an
end-user .External links
* RFC 1491 - A Survey of Advanced Usages of X.500
* ARIN's [http://www.arin.net/registration/guidelines/report_reassign.html Reporting Reassignment Information Guidelines]
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