Internet Provider Security (IPS) tags are used by domain registrar to administer a domain name registration service and related Domain Name System (DNS) services.
[1] The original meaning of IPS tag was thought to be lost after it was created with Nominet UK's predecessor, the Naming Committee; it is widely speculated that it stands for Internet Provider Security tag.
[citation needed] The term IPS tag itself is considered obsolete by Nominet UK, and is now referred to simply as tag.
[2][3] However, there are also records of those involved in the early internet industry who believe it was a typo of the initialism for Internet Service Provider made by an unnamed junior systems administrator, ISPs being the main bodies responsible for registering domains in the early years of the commercial internet.
It is possible to change the IPS tag via the Nominet website.