Reserver IP Addresses
Posted on 03-May-2019
Private IP addresses
- Private IP address ranges
- IPv4 address ranges:
- 10.0.0.0 - 10.255.255.255
- 172.16.0.0 - 172.31.255.255
- 192.168.0.0 - 192.168.255.255
- IPv6 address range
- Cannot be used or routed on the internet
- Helps delay IPv4 address exhaustion
- Used in local area networks (LAN)
- Provides flexible IP ranges for larger or smaller private networks
- Allow for additional subnets within the ranges
Loopback IP address
- IP address range/IP address:
- (IPv4) 127.0.0.0 - 127.255.255.255
- (IPv6) ::1/128
- Reserved for a Host's self address (or localhost address)
- Managed by the operating system
- Does not utilize the network interface card (NIC)
- Uses a virtual network interface within the operating system
- Can be used for testing on the local machine
Ling-local Addresses
- IP address range:
- (IPv4) 169.254.0.0 - 169.254.255.255
- (IPv6) fe80::/10
- Used in the absence of DHCP or static addresses
- Can only communicate within its own network segment
- Routers will not forward packets from a loopback address
- Uses Address Resolution Protocol (ARP) to ensure that the desired IP address is not in use
- IPv6 requires a link-local address even if a routable address has been assigned
Unspecified Address
