the odds are it is just legacy IP owner information. IP addresses are constantly being bought in sold in blocks from gov agency's, ISP, schools, private industry, etc. in each respective country. and the databases are manually updated.
IANA is responsible for global coordination of the Internet Protocol addressing systems, as well as the Autonomous System Numbers used for routing Internet traffic.
IANA
* the external IP of my Android phone is 21.234.228.192 and points to
DoD Network Information Center (DNIC)
the CIDR has a mast bit of 8 so the IP range at the time of registration in 1991 was 16,777,214 addresses. the entry has not been updated for over 2.5 years.
* it's also not just IP addresses, local phone company's have a similar system with telephone numbers. which are also constantly being passed around to different service providers. I literally spent 2 hours on the phone about a month ago trying to find out who was responsible for a POTS number at a wallmart I was working at. I talked to Embarq, then Verizon, then Pioneer, then Sprint and back to Megapath and back to Embarq. never found out who owned the number, I passed it off.