[ fnlc = for non-LAN computers ]
"fnlc" (For Non LAN Users) is a misnomer, or, at best, a poor choice of words.
Should be instead called "reserved for private use" (rfpu).
Sometimes also called "reserved for intranet local networks".
invalid IPs: 0.0.0.1 - 0.255.255.255
IANA Reserved for private use FNLC: 10.0.0.0 - 10.255.255.255
IANA Reserved for private use FNLC: 192.168.0.0 - 192.168.255.255
IANA Reserved for private use FNLC: 240.0.0.0 - 255.255.255.255
e.g. "192.168.1.1 was in range iana reserved for private use fnlc: 192.168.0.0 - 192.168.255.255 "
In other words, a home 'local area network' (LAN) will typically use IP numbers like
192.168.0.101; these are not addresses for devices on the public Internet.
See also: bogons (bogus IP addresses) [larger list, completewhois.com]