--- version: rssac002v3 service: a.root-servers.net start-period: '2018-02-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3513847820 dns-udp-queries-received-ipv6: 400288707 dns-tcp-queries-received-ipv4: 144330491 dns-tcp-queries-received-ipv6: 16994929 dns-udp-responses-sent-ipv4: 3511148768 dns-udp-responses-sent-ipv6: 400245196 dns-tcp-responses-sent-ipv4: 144533587 dns-tcp-responses-sent-ipv6: 17142779