--- version: rssac002v3 service: a.root-servers.net start-period: '2018-06-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6714467165 dns-udp-queries-received-ipv6: 446922524 dns-tcp-queries-received-ipv4: 126797426 dns-tcp-queries-received-ipv6: 16699333 dns-udp-responses-sent-ipv4: 6574093710 dns-udp-responses-sent-ipv6: 446499068 dns-tcp-responses-sent-ipv4: 125356991 dns-tcp-responses-sent-ipv6: 16751682