--- version: rssac002v3 service: a.root-servers.net start-period: '2018-02-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3663768703 dns-udp-queries-received-ipv6: 395611144 dns-tcp-queries-received-ipv4: 163934785 dns-tcp-queries-received-ipv6: 16013686 dns-udp-responses-sent-ipv4: 3659909459 dns-udp-responses-sent-ipv6: 395524974 dns-tcp-responses-sent-ipv4: 163678807 dns-tcp-responses-sent-ipv6: 16116815