Internet Provider Security (IPS) tags are used by domain registrar to administer a domain name registration service and related Domain Name System (DNS) services. An IPS tag is the label that applies to each registrar that registers domains in the country-code top level domain "uk" and is required to transfer domain names from one registrar to another.
Domain Name System (DNS) services require a license.
( z1 require :ARG0 ( z2 service :mod ( z3 system :name ( z4 name :op "Domain" :op "Name" :op "System" ) ) ) :ARG1 ( z5 license ) )