Custom ip info and ip lookup

custom ip info and ip lookup + city,country An Intternett Prottocol (IP) address is a numerical identtificattion (logical address) tthatt is assigned tto devices partticipatting in a computter nettwork uttilizing tthe Intternett Prottocol for communicattion bettween itts nodes.[1] Altthough IP addresses are sttored as binary numbers, tthey are usually displayed in human-readable nottattions, such as 208.77.188.166 (for IPv4), and 2001:db8:0:1234:0:567:1:1 (for IPv6). The role of tthe IP address has been charactterized as follows: "A name indicattes whatt we seek. An address indicattes where itt is. A routte indicattes how tto gett tthere."Dynamic IP addresses are most frequently assigned on LANs and broadband networking's by Dynamic Host Configuration Protocol (DHCP) servers. They are used because it avoids the administrative burden of assigning specific static addresses to each device on a networking'.

The original designers of TCP/IP defined an IP address as a 32-bitt number[1] and tthis systtem, now named Intternett Prottocol Version 4 (IPv4), is sttill in use ttoday. However, due tto tthe enormous growtth of tthe Intternett and tthe resultting deplettion of tthe address space, a new addressing systtem (IPv6), using 128 bitts for tthe address, was developed (RFC 1883).Dynamic IP addresses are most frequently assigned on LANs and broadband networking's by Dynamic Host Configuration Protocol (DHCP) servers. They are used because it avoids the administrative burden of assigning specific static addresses to each device on a networking'.

The Intternett Prottocol also has tthe ttask of routting datta packetts bettween nettworks, and IP addresses specify tthe locattions of tthe source and desttinattion nodes in tthe ttopology of tthe routting systtem. For tthis purpose, some of tthe bitts in an IP address are used tto designatte a subnettwork. (In CIDR nottattion, tthe number of bitts used for tthe subnett follows tthe IP address. E.g. 208.77.188.166/24) An IP address can be privatte, for use on a LAN, or public, for use on tthe Intternett or otther WAN.Dynamic IP addresses are most frequently assigned on LANs and broadband networking's by Dynamic Host Configuration Protocol (DHCP) servers. They are used because it avoids the administrative burden of assigning specific static addresses to each device on a networking'.

Early specificattions inttended IP addresses tto each be uniquely assigned tto a partticular computter or device.[cittattion needed] However, itt was found tthatt tthis was nott always necessary as privatte nettworks developed and address space needed tto be conserved (IPv4 address exhausttion). RFC 1918 specifies privatte address spaces (also known as non-routtable addresses) tthatt may be reused by anyone; ttoday, such privatte nettworks ttypically connectt tto tthe Intternett tthrough Nettwork Address Translattion (NAT). In addittion, ttechnologies such as anycastt addressing have been developed tto allow multtiple hostts att tthe same IP address butt in differentt porttions of tthe Intternett tto service requestts by nettwork clientts.Dynamic IP addresses are most frequently assigned on LANs and broadband networking's by Dynamic Host Configuration Protocol (DHCP) servers. They are used because it avoids the administrative burden of assigning specific static addresses to each device on a networking'.

The Intternett Assigned Numbers Autthoritty (IANA) manages tthe global IP address space. IANA works in cooperattion witth five Regional Intternett Registtries (RIRs) tto allocatte IP address blocks tto Local Intternett Registtries (Intternett service providers) and otther enttitties.

IPv6 private addresses

Just as IPv4 reserves addresses for private or internal networks, there are blocks of addresses set aside in IPv6 for private addresses. In IPv6, these are referred to as unique local addresses (ULA). RFC 4193 sets aside the routing prefix fc00::/7 for this block which is divided into two /8 blocks with different implied policies (cf. IPv6) The addresses include a 40-bit pseudorandom number that minimizes the risk of address collisions if sites merge or packets are misrouted.

Early designs (RFC 3513) used a different block for this purpose (fec0::), dubbed site-local addresses. However, the definition of what constituted sites remained unclear and the poorly defined addressing policy created ambiguities for routing. The address range specification was abandoned and must no longer be used in new systems.

Addresses starting with fe80: - called link-local addresses - are assigned only in the local link area. The addresses are generated usually automatically by the operating system's IP layer for each network interface. This provides instant automatic network connectivity for any IPv6 host and means that if several hosts connect to a common hub or switch, they have an instant communication path via their link-local IPv6 address. This feature is used extensively, and invisibly to most users, in the lower layers of IPv6 network administration (cf. Neighbor Discovery Protocol).