--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5218460753 dns-udp-queries-received-ipv6: 1063251268 dns-tcp-queries-received-ipv4: 277988306 dns-tcp-queries-received-ipv6: 111158802 dns-udp-responses-sent-ipv4: 5071201553 dns-udp-responses-sent-ipv6: 1061892864 dns-tcp-responses-sent-ipv4: 266672801 dns-tcp-responses-sent-ipv6: 111505354