IP lookup tools provide IP address information. IP addresses identify and communicate between devices on the internet. IP lookup tools can reveal an IP address location, ISP, and connection type (such as broadband, mobile, or satellite). Some IP lookup programmes additionally reveal the IP address owner and the network or ISP IP range. IP lookup software can track spam and phishing emails and identify abnormal network activities. Website owners can use them to collect visitor data like location and ISP to better understand their audience and optimise their site. IP lookup tools can provide a lot of IP address information, but they may not be reliable or up-to-date. ISPs can dynamically assign and re-assign IP addresses, which may not match their physical location or organisation. IP lookup tools can also be inaccurate if ISPs and companies hide their IP addresses.