--- version: rssac002v3 service: a.root-servers.net start-period: '2021-09-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4613222608 dns-udp-queries-received-ipv6: 1175170621 dns-tcp-queries-received-ipv4: 276525490 dns-tcp-queries-received-ipv6: 82801541 dns-udp-responses-sent-ipv4: 4580635908 dns-udp-responses-sent-ipv6: 1202035390 dns-tcp-responses-sent-ipv4: 270625839 dns-tcp-responses-sent-ipv6: 83086368