--- version: rssac002v3 service: a.root-servers.net start-period: '2021-06-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5524220615 dns-udp-queries-received-ipv6: 1420212959 dns-tcp-queries-received-ipv4: 290364980 dns-tcp-queries-received-ipv6: 101328753 dns-udp-responses-sent-ipv4: 5352523065 dns-udp-responses-sent-ipv6: 1417600650 dns-tcp-responses-sent-ipv4: 280206016 dns-tcp-responses-sent-ipv6: 101062973