It's interesting that Eritrea's only ISP (there is only one ASN assigned to ER), EriTel, is apparently only connected to the rest of the world by China:
https://bgp.he.net/AS30987#_peersEven the few scattered .gov.er domains appear to be using some US-based single person(?) consultancy for nameservers, presumably for reliability.
If you Bing for .er, there's nothing other than an EriTel site that takes ten minutes to load, and a bunch of outdated webmail interfaces.
Does the country even have wired service at all? A traceroute to the only ASN in Eritrea is over 1200ms from the US and contains hostnames like 'asia-broadcast-sat' or 'absatellite.net'. 2G mobile calls within the country are $0.20/minute and a 64 kbps connection is USD$300 a month.
The retail site on Eritel advertises 9 megabit down, 1 megabit up for $16000/m. This is "new pricing" updated 2018.