--- version: rssac002v3 service: a.root-servers.net start-period: '2017-11-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3638930777 dns-udp-queries-received-ipv6: 380056348 dns-tcp-queries-received-ipv4: 86032391 dns-tcp-queries-received-ipv6: 13728355 dns-udp-responses-sent-ipv4: 3636022117 dns-udp-responses-sent-ipv6: 379993088 dns-tcp-responses-sent-ipv4: 86294920 dns-tcp-responses-sent-ipv6: 13811683