Private IP & 사용이 제한된 IP 들

Private IP Address Ranges

Address ranges below are reserved by IANA for private intranets, and not routable to the Internet.
For additional information, see RFC 1918.
10.0.0.0 ~ 10.255.255.255 (10.0.0.0/8 prefix)
172.16.0.0 ~ 172.31.255.255 (172.16.0.0/12 prefix)
192.168.0.0 ~ 192.168.255.255 (192.168.0.0/16 prefix)

Reserved and special use addresses:
0.0.0.0/8 - Current network (only valid as source address) RFC 1700
127.0.0.0 is reserved for loopback and IPC on the localhost.
127.0.0.1 ~ 127.255.255.254 (127.0.0.0/8) - loopback IP addresses (refers to self) RFC 5735
192.0.0.0/24 - reserved (IANA) RFC 5735
192.88.99.0/24 - IPv6 to IPv4 relay. RFC 3068
198.18.0.0/15 - network benchmark tests. RFC 2544
198.51.100.0/24 - TEST-NET-2. RFC 5737
203.0.113.0/24 - TEST-NET-3. RFC 5737
224.0.0.0 ~ 239.255.255.255 (224.0.0.0/4) reserved for multicast addresses. RFC 3171
240.0.0.0/4 - reserved (former Class E network) RFC 1700
255.255.255.255 is the limited broadcast address (limited to all other nodes on the LAN) RFC 919

255 in any part of the IP is reserved for broadcast addressing
0.0.0.0 in routing context means the default route (to "the rest of" the internet) RFC 1700
0.0.0.0 in the context of firewalls means "all addresses of the local machine" RFC 1700

Reserved address blocks

CIDR address block	Description	Reference
0.0.0.0/8	Current network (only valid as source address)	RFC 1700
10.0.0.0/8	Private network	RFC 1918
127.0.0.0/8	Loopback	RFC 5735
169.254.0.0/16	Link-Local	RFC 3927
172.16.0.0/12	Private network	RFC 1918
192.0.0.0/24	Reserved (IANA)	RFC 5735
192.0.2.0/24	TEST-NET-1, Documentation and example code	RFC 5735
192.88.99.0/24	IPv6 to IPv4 relay	RFC 3068
192.168.0.0/16	Private network	RFC 1918
198.18.0.0/15	Network benchmark tests	RFC 2544
198.51.100.0/24	TEST-NET-2, Documentation and examples	RFC 5737
203.0.113.0/24	TEST-NET-3, Documentation and examples	RFC 5737
224.0.0.0/4	Multicasts (former Class D network)	RFC 3171
240.0.0.0/4	Reserved (former Class E network)	RFC 1700
255.255.255.255	Broadcast	RFC 919

[링크 :  http://en.wikipedia.org/wiki/IPv4#Special-use_addresses]