--- version: rssac002v3 service: a.root-servers.net start-period: '2018-12-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4309293632 dns-udp-queries-received-ipv6: 751888907 dns-tcp-queries-received-ipv4: 135527789 dns-tcp-queries-received-ipv6: 29311836 dns-udp-responses-sent-ipv4: 4215834402 dns-udp-responses-sent-ipv6: 751152824 dns-tcp-responses-sent-ipv4: 133145895 dns-tcp-responses-sent-ipv6: 29545326