--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5079054582 dns-udp-queries-received-ipv6: 952172939 dns-tcp-queries-received-ipv4: 460738967 dns-tcp-queries-received-ipv6: 114262158 dns-udp-responses-sent-ipv4: 4413420445 dns-udp-responses-sent-ipv6: 928751851 dns-tcp-responses-sent-ipv4: 396724329 dns-tcp-responses-sent-ipv6: 107469838