--- version: rssac002v3 service: a.root-servers.net start-period: '2018-02-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3648297679 dns-udp-queries-received-ipv6: 417911597 dns-tcp-queries-received-ipv4: 150981607 dns-tcp-queries-received-ipv6: 17233481 dns-udp-responses-sent-ipv4: 3640734530 dns-udp-responses-sent-ipv6: 417886226 dns-tcp-responses-sent-ipv4: 149858730 dns-tcp-responses-sent-ipv6: 17332343