--- version: rssac002v3 service: a.root-servers.net start-period: '2019-12-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5738327656 dns-udp-queries-received-ipv6: 845795767 dns-tcp-queries-received-ipv4: 250521423 dns-tcp-queries-received-ipv6: 68342123 dns-udp-responses-sent-ipv4: 5568343606 dns-udp-responses-sent-ipv6: 843324888 dns-tcp-responses-sent-ipv4: 247421775 dns-tcp-responses-sent-ipv6: 68473126