Do not think it is necessary, but may be it will have sense for SWH team.
In Russia their ip 217.70.184.38 is blocked by Roskomnadzor (this is a ministry of communications and Internet), so it is not opening. 
https://reestr.rublacklist.net/search/?q=217.70.184.38 <https://reestr.rublacklist.net/search/?q=217.70.184.38>

Are their servers all right? Are they in blacklists also anywhere?


Mar 29, 2019, 4:05 PM by ludo@gnu.org:

> Hello!
>
> I’ve written a post on the Software Heritage support in Guix:
>
>  > https://gnu.org/s/guix/blog/2019/connecting-reproducible-deployment-to-a-long-term-source-code-archive <https://gnu.org/s/guix/blog/2019/connecting-reproducible-deployment-to-a-long-term-source-code-archive/>
>
> Happy reading!  :-)
>
> Ludo’.
>