--- version: rssac002v3 service: a.root-servers.net start-period: '2019-12-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5816483243 dns-udp-queries-received-ipv6: 1057471635 dns-tcp-queries-received-ipv4: 216619865 dns-tcp-queries-received-ipv6: 67391447 dns-udp-responses-sent-ipv4: 5607408802 dns-udp-responses-sent-ipv6: 1029246191 dns-tcp-responses-sent-ipv4: 213876719 dns-tcp-responses-sent-ipv6: 67316858