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Rene Wilhelm
Hi Raza, Thanks for your feedback. We picked the period 1999-2002 because that's where statistics show the bubble in RIPE NCC membership growth rates. As you can see in figure 1 of https://labs.ripe.net/Members/wilhelm/members-and-number-resources-1-year-later the second half of 2001 still had a solid number of LIRs signing up. Redefining the dotcom bubble as lasting from 1-Oct-1998 to 1-Jul-2001 doesn't alter the numbers much. The shorter interval makes for a smaller total number of LIRs, but in both cases we see 44% of the dotcoms have closed now. The same 5 countries account for half of the closed LIRs, only Russia's share drops from 8% to 6%. The distribution of lifetime for the new interval is also very similar to what is shown in figure 5 above. The average goes up by about a month, from 4.6 to 4.7 years as member of the RIPE NCC. Regards, Rene