Ohh I see, there are 8 of them:
https://njump.me/nevent1qqs8mg3h4vs722tg9jcdxggax8rhd3je24h8qd9t5spe9l83kmdpplcpz4mhxue69uhkummnw3ezummcw3ezuer9wchs5fe9vq
https://njump.me/nevent1qqs835tncpdq9z4p7nh...
16. This was the automated way a routstr node first announced service to get picked up by the network when it first started.