--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5913759266 dns-udp-queries-received-ipv6: 997711895 dns-tcp-queries-received-ipv4: 455294396 dns-tcp-queries-received-ipv6: 119198449 dns-udp-responses-sent-ipv4: 4483893711 dns-udp-responses-sent-ipv6: 928848338 dns-tcp-responses-sent-ipv4: 361596188 dns-tcp-responses-sent-ipv6: 102933072