--- version: rssac002v3 service: a.root-servers.net start-period: '2021-08-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4889939050 dns-udp-queries-received-ipv6: 1200826258 dns-tcp-queries-received-ipv4: 318906071 dns-tcp-queries-received-ipv6: 96687798 dns-udp-responses-sent-ipv4: 4822951670 dns-udp-responses-sent-ipv6: 1217031244 dns-tcp-responses-sent-ipv4: 310740498 dns-tcp-responses-sent-ipv6: 96694291