--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6534358263 dns-udp-queries-received-ipv6: 1319723205 dns-tcp-queries-received-ipv4: 140445825 dns-tcp-queries-received-ipv6: 34992887 dns-udp-responses-sent-ipv4: 6401623500 dns-udp-responses-sent-ipv6: 1292399215 dns-tcp-responses-sent-ipv4: 133049262 dns-tcp-responses-sent-ipv6: 31460992