--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-24T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5168674115 dns-udp-queries-received-ipv6: 980262667 dns-tcp-queries-received-ipv4: 269234397 dns-tcp-queries-received-ipv6: 109099713 dns-udp-responses-sent-ipv4: 4997426267 dns-udp-responses-sent-ipv6: 978856540 dns-tcp-responses-sent-ipv4: 260250258 dns-tcp-responses-sent-ipv6: 109436375