IP range 212.100.64.0 - 212.100.95.255 - WhoIs results show Cyberspace Limited. http://www.cybaaspace.com/.
Dr. Charles' IP is sometimes within this block, so his location could easily be the internet cafe just round the corner.

Boxing day IP address - 195.166.233.117 - Linkserve Nigeria Limited - 22 Akin Adesola - FATB Plaza.

Note: As Lagos/Nigeria is a place I have never visited, I am unaware of the exact locations on each street.