--- version: rssac002v3 service: a.root-servers.net start-period: '2017-12-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5208536036 dns-udp-queries-received-ipv6: 386158098 dns-tcp-queries-received-ipv4: 111155525 dns-tcp-queries-received-ipv6: 12401473 dns-udp-responses-sent-ipv4: 5206917119 dns-udp-responses-sent-ipv6: 386108689 dns-tcp-responses-sent-ipv4: 111320484 dns-tcp-responses-sent-ipv6: 12558535