--- version: rssac002v3 service: a.root-servers.net start-period: '2018-12-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4817211880 dns-udp-queries-received-ipv6: 746920688 dns-tcp-queries-received-ipv4: 131698263 dns-tcp-queries-received-ipv6: 33922459 dns-udp-responses-sent-ipv4: 4711680570 dns-udp-responses-sent-ipv6: 745890985 dns-tcp-responses-sent-ipv4: 127881008 dns-tcp-responses-sent-ipv6: 34153105