Assignment
African Region Internet Registry, American Registry for Internet Numbers, Asia Pacific Network Information Centre, Internet Assigned Numbers Authority, Latin American and Caribbean IP address Regional R, RIPE Network Coordination Centre
Lookup
DNS Lookup Tool, Find Ip Address with WebYield, What Is My IP Address?, Your Current IP Address
NAT
RFCs, How Network Address Translation Works, Linux IP Masquerading (2000pre1), NAT and Peer-to-peer networking, NAT Technical Tips from Cisco, Network Address Translators (nat) Charter, Understanding NAT
Demystifying Netmasks
S. Lee Henry explains how to understand and calculate netmasks. Originally published in SunExpert Magazine, May, 1998. [PDF format]
Internet Protocol Addressing and the Domain Name S
Detailed tutorial covering IP address and CIDR allocation, name resolution, and DNS. Includes examples, tools, and references.
IP 101: All About IP Addresses
NetworkComputing tutorial on IP Addresses
IP Address Subnetting Tutorial
A technical introduction to IP addressing and address subnetting in an easy-to-understand tutorial format.
IP Addresses
A Cisco document explaining what IP addresses are. [HTML/PDF]
IP Addressing for Internet Data Centers
Intel document describing IP Addressing concerns for the implementation of public Internet data centers including future trends.
IP Addressing Fundamentals
Explanation of how IP addressing works.
IP-Address Management on LANs
Byte Magazine article covering issues related to IP address management
Network Calculators
Free TCP/IP Network Calculators. Includes web-based Subnet and network / node calculators.
Online IP Subnet Calculator
Online IP subnet, CIDR, supernet and wildcard mask calculators .
Renumbering
John S. Quaterman explains how to avoid renumbering IP networks. Originally published in SunExpert Magazine, November, 1997. [PDF format]
Subnet Addressing
Very clear explanation on the issue of IP addressing and subnetting
Subnet Online Network Resources
Provides subnetting tutorials, calculators and other tools.