--- version: rssac002v3 service: a.root-servers.net start-period: '2019-12-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6609255975 dns-udp-queries-received-ipv6: 1007017607 dns-tcp-queries-received-ipv4: 255508214 dns-tcp-queries-received-ipv6: 70770249 dns-udp-responses-sent-ipv4: 6409503021 dns-udp-responses-sent-ipv6: 1001598765 dns-tcp-responses-sent-ipv4: 252396585 dns-tcp-responses-sent-ipv6: 70804657