--- version: rssac002v3 service: a.root-servers.net start-period: '2018-12-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5010042017 dns-udp-queries-received-ipv6: 794763861 dns-tcp-queries-received-ipv4: 136775927 dns-tcp-queries-received-ipv6: 35087184 dns-udp-responses-sent-ipv4: 4901189062 dns-udp-responses-sent-ipv6: 794067286 dns-tcp-responses-sent-ipv4: 132738881 dns-tcp-responses-sent-ipv6: 35296235