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Effect and usage of the domainlevel munchkin Initialization Parameter

Question asked by Grégoire Michel on Jan 31, 2016
Latest reply on Oct 4, 2018 by Sanford Whiteman

I was told a while ago by support that when using the munchkin tracking on a domain which top level domain had only 2 letters, we had to set the domainlevel munchkin init parameter to 2.


Reading the doc, it seems that this parameter has a totally different effect :

Sets the number of pieces from the page’s domain to use when setting the domain parameter of the cookie: domainLevel: 2 will set the domain parameter to “,” while domainLevel: 3 will set the cookie to “”

Based on this doc, it seems that the use of it would be to handle situations such as (common UK URL) or (Common Brazilian one) (in which cases it should be set to 3)


Question 1: Who is right, the support or the doc ?


Question 2: I also gather from the fact that the parameter is not usually needed when on a domain, the default value is 2. Is this correct ?


Question 3: do I have to change it on a Marketo LP that is hosted in a ?