--- version: rssac002v3 service: a.root-servers.net start-period: '2018-01-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4508888007 dns-udp-queries-received-ipv6: 435572145 dns-tcp-queries-received-ipv4: 99816649 dns-tcp-queries-received-ipv6: 14154238 dns-udp-responses-sent-ipv4: 4504626895 dns-udp-responses-sent-ipv6: 435514371 dns-tcp-responses-sent-ipv4: 99988639 dns-tcp-responses-sent-ipv6: 14264196