Looks like an official internet registry for IPv4 and IPv6 in your region.
Wikipedia says it is "the Regional Internet Registry (RIR) for Europe, West
Asia, and the former USSR. It is headquartered in Amsterdam, with a branch
office in Dubai.A RIR oversees the allocation and registration of Internet
number resources (IPv4 addresses, IPv6 addresses and autonomous system
numbers) in a specific region"
According to https://www.ripe.net/about-us/what-we-do --
"We're an independent, not-for-profit membership organisation that supports
the infrastructure of the Internet through technical coordination in our
service region. Our most prominent activity is to act as the Regional
Internet Registry (RIR) providing global Internet resources and related
services (IPv4, IPv6 and AS Number resources) to members in our service
region. Our membership consists mainly of Internet service providers (ISPs),
telecommunication organisations and large corporations located in Europe, the
Middle East and parts of Central Asia. We also provide services for the
benefit of the Internet community at large."
