--- version: rssac002v3 service: a.root-servers.net start-period: '2020-01-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6716598275 dns-udp-queries-received-ipv6: 941538234 dns-tcp-queries-received-ipv4: 260042495 dns-tcp-queries-received-ipv6: 72326908 dns-udp-responses-sent-ipv4: 6547352337 dns-udp-responses-sent-ipv6: 937323048 dns-tcp-responses-sent-ipv4: 253086002 dns-tcp-responses-sent-ipv6: 72482850