Wikipedia:IP users

Source: Wikipedia, the free encyclopedia.

IP users, guest users or unregistered users are users who edit Wikipedia without registering for an account. The term "IP user" comes from the fact that when such a user edits, Wikipedia annotates the edit with the

IPv4 or IPv6
forms:

x.x.x.x where x is a number bigger than 0 and smaller than 255
y:y:y:y:y:y:y:y where y is a number between 0 and 65535, written in hexadecimal

The IP user edits are estimated to constitute one-half (54% in 2013) of the general username activity levels. So, among the total daily edits, then about one-third are posted by IP users, while 2/3 (~67%) are logged to specific usernames each time.

While registered editors only occasionally possess one or two

legitimate alternate usernames, IP users frequently contribute from different IP addresses because Internet service providers
(ISPs) usually assign IP addresses dynamically; meaning that the same actual person may return to Wikipedia with a different IP address that was re-assigned by the ISP. This often makes it difficult to tell whether an IP user is a total newcomer or a returning editor.

See also

About IP addresses in general

About editing Wikipedia with or without an account