--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6476574209 dns-udp-queries-received-ipv6: 1196765689 dns-tcp-queries-received-ipv4: 144009241 dns-tcp-queries-received-ipv6: 37490226 dns-udp-responses-sent-ipv4: 6376750336 dns-udp-responses-sent-ipv6: 1184451804 dns-tcp-responses-sent-ipv4: 137821602 dns-tcp-responses-sent-ipv6: 34923113