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A possibility explored was just selecting hosts in the 6 countries bordering and including South Africa (TLDs BW, LS, SZ, ZA, ZW) and then just using hosts with TLDs .co, .com, .go, .gov or including banc or bank in the name. The ideas was that such hosts are probably on commodity networks. However as of May 5th, 2020 these countries have few Covid-19 cases (BW:23, LS: 0, NA 101, SZ (Eswatine): 145, ZA: 218,329, ZW:34). As expected we could not identify a significant impact of Covid-19 on IPDV.
Useful other documents
Coronavirus-free Lesotho relaxes lockdown restrictions, 5/6/2020
Covid-19 9n Africa, from The Center For Disease Dynamics, Economics & Policy