404. That’s an error.
The requested URL /bookmarks/mark?op=add&bkmk=https%3A%2F%2Fes.adminsub.net%2Ftcp-udp-port-finder&title=Descubridor+de+puertos+TCP+UDP+online+-+es.adminsub.net was not found on this server. That’s all we know.
/bookmarks/mark?op=add&bkmk=https%3A%2F%2Fes.adminsub.net%2Ftcp-udp-port-finder&title=Descubridor+de+puertos+TCP+UDP+online+-+es.adminsub.net