--- version: rssac002v3 service: a.root-servers.net start-period: '2018-06-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6163350442 dns-udp-queries-received-ipv6: 434261421 dns-tcp-queries-received-ipv4: 133266472 dns-tcp-queries-received-ipv6: 18413421 dns-udp-responses-sent-ipv4: 6015526154 dns-udp-responses-sent-ipv6: 434040087 dns-tcp-responses-sent-ipv4: 134046593 dns-tcp-responses-sent-ipv6: 18509501