--- version: rssac002v3 service: i.root-servers.net start-period: '2018-12-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5936076914 dns-udp-queries-received-ipv6: 1104917282 dns-tcp-queries-received-ipv4: 130443954 dns-tcp-queries-received-ipv6: 30228154 dns-udp-responses-sent-ipv4: 5865417936 dns-udp-responses-sent-ipv6: 1110476655 dns-tcp-responses-sent-ipv4: 126989118 dns-tcp-responses-sent-ipv6: 29658945