ASN oddity in the routing

["Ren C. via NANOG" <nanog () nanog org>]

Hello, I am unsure if there is a better place to ask. I am learning working on the enabling RPKI and authoritative IRR 
validation in my day job.
However, I find some very strange ASN grouped together. I understand several do not bother with RPKI or IRR, especially 
many large tier 1, which don't really care or need about other people's transit, but this is very small and I do not 
heard of it before. 

In my  logs to see which routes have the broken or malformed , frequently it is just omission and incorrect, but there 
are some very odd situations, but it also appears to be verified in other BGP glass. 
Can someone please tell me whether these invalid is a bug in the routing? Why are there so many Africa networks going 
through a small Virginia provider and more than half the IP is bogon, but has an IRR entry for the wrong provider or it 
is unrelated? It does not look like the AS is related at all, and they are not in the same country, but there is a 
relationship peering.

https://bgp.he.net/AS208254#_peers6
https://bgp.he.net/AS398481#_peers6

Thank you



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