--- version: rssac002v3 service: a.root-servers.net start-period: '2018-12-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4760365310 dns-udp-queries-received-ipv6: 822405278 dns-tcp-queries-received-ipv4: 136630460 dns-tcp-queries-received-ipv6: 30347189 dns-udp-responses-sent-ipv4: 4656639599 dns-udp-responses-sent-ipv6: 821872130 dns-tcp-responses-sent-ipv4: 132918523 dns-tcp-responses-sent-ipv6: 30615916