--- version: rssac002v3 service: a.root-servers.net start-period: '2018-06-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6392911974 dns-udp-queries-received-ipv6: 359004139 dns-tcp-queries-received-ipv4: 112963815 dns-tcp-queries-received-ipv6: 13771183 dns-udp-responses-sent-ipv4: 6298321333 dns-udp-responses-sent-ipv6: 358608685 dns-tcp-responses-sent-ipv4: 111118646 dns-tcp-responses-sent-ipv6: 13800501