--- version: rssac002v3 service: a.root-servers.net start-period: '2018-09-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3991585916 dns-udp-queries-received-ipv6: 666563863 dns-tcp-queries-received-ipv4: 108907100 dns-tcp-queries-received-ipv6: 20171691 dns-udp-responses-sent-ipv4: 3892957363 dns-udp-responses-sent-ipv6: 666079754 dns-tcp-responses-sent-ipv4: 105036153 dns-tcp-responses-sent-ipv6: 20185506