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Request for Proposal: Name Collision Analysis Project (NCAP) Study 1

LOS ANGELES – 9 July 2019 –The Internet Corporation for Assigned Names and Numbers (ICANN) is seeking to identify a contractor to perform the research, analysis, and writing necessary to produce Study 1 of the Name Collision Analysis Project (NCAP).

Name collision refers to the situation where a name that is defined and used in one namespace may also appear in another. Users and applications intending to use a name in one namespace may attempt to use it in a different one, and unexpected behavior may result where the intended use of the name is not the same in both namespaces.

The ICANN Board asked the ICANN Security and Stability Advisory Committee (SSAC) to study the impact of name collisions and advise the Board on their effects and possible mitigation. In response, SSAC started the NCAP effort and designed Study 1, the first of three name collision studies intended to address the Board's request.

The scope of NCAP Study 1 is larger than usual work undertaken by SSAC, so the ICANN organization's Office of the CTO (OCTO) is facilitating the work and is engaging a contractor to perform Study 1.

More details about NCAP and Study 1 can be found in a document written by SSAC entitled SSAC Proposal for the Name Collision Analysis Project (Revised by ICANN Office of the CTO).

For a complete overview of the RFP including the timeline, please see here [PDF, 331 KB].

Indications of interest should be emailed to NCAP-Study1-RFP@icann.org. Proposals should be electronically submitted by 23:59 UTC on 30 July 2019 using ICANN's sourcing tool. Access to the ICANN org sourcing tool may be requested via the same email.

About ICANN

ICANN's mission is to help ensure a stable, secure, and unified global Internet. To reach another person on the Internet, you need to type an address – a name or a number – into your computer or other device. That address must be unique so computers know where to find each other. ICANN helps coordinate and support these unique identifiers across the world. ICANN was formed in 1998 as a not-for-profit public-benefit corporation with a community of participants from all over the world.


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Domain Name System
Internationalized Domain Name ,IDN,"IDNs are domain names that include characters used in the local representation of languages that are not written with the twenty-six letters of the basic Latin alphabet ""a-z"". An IDN can contain Latin letters with diacritical marks, as required by many European languages, or may consist of characters from non-Latin scripts such as Arabic or Chinese. Many languages also use other types of digits than the European ""0-9"". The basic Latin alphabet together with the European-Arabic digits are, for the purpose of domain names, termed ""ASCII characters"" (ASCII = American Standard Code for Information Interchange). These are also included in the broader range of ""Unicode characters"" that provides the basis for IDNs. The ""hostname rule"" requires that all domain names of the type under consideration here are stored in the DNS using only the ASCII characters listed above, with the one further addition of the hyphen ""-"". The Unicode form of an IDN therefore requires special encoding before it is entered into the DNS. The following terminology is used when distinguishing between these forms: A domain name consists of a series of ""labels"" (separated by ""dots""). The ASCII form of an IDN label is termed an ""A-label"". All operations defined in the DNS protocol use A-labels exclusively. The Unicode form, which a user expects to be displayed, is termed a ""U-label"". The difference may be illustrated with the Hindi word for ""test"" — परीका — appearing here as a U-label would (in the Devanagari script). A special form of ""ASCII compatible encoding"" (abbreviated ACE) is applied to this to produce the corresponding A-label: xn--11b5bs1di. A domain name that only includes ASCII letters, digits, and hyphens is termed an ""LDH label"". Although the definitions of A-labels and LDH-labels overlap, a name consisting exclusively of LDH labels, such as""icann.org"" is not an IDN."