--- version: rssac002v3 service: a.root-servers.net start-period: '2018-01-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4442522960 dns-udp-queries-received-ipv6: 425418449 dns-tcp-queries-received-ipv4: 102014869 dns-tcp-queries-received-ipv6: 13533900 dns-udp-responses-sent-ipv4: 4437954730 dns-udp-responses-sent-ipv6: 425321192 dns-tcp-responses-sent-ipv4: 102299584 dns-tcp-responses-sent-ipv6: 13641322