--- version: rssac002v3 service: a.root-servers.net start-period: '2018-10-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3801903955 dns-udp-queries-received-ipv6: 578557180 dns-tcp-queries-received-ipv4: 104001721 dns-tcp-queries-received-ipv6: 23957821 dns-udp-responses-sent-ipv4: 3701196642 dns-udp-responses-sent-ipv6: 578259301 dns-tcp-responses-sent-ipv4: 100188784 dns-tcp-responses-sent-ipv6: 23991269