--- version: rssac002v3 service: a.root-servers.net start-period: '2021-05-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5729552115 dns-udp-queries-received-ipv6: 1376748269 dns-tcp-queries-received-ipv4: 360670874 dns-tcp-queries-received-ipv6: 162807346 dns-udp-responses-sent-ipv4: 5691615111 dns-udp-responses-sent-ipv6: 1404685245 dns-tcp-responses-sent-ipv4: 347384292 dns-tcp-responses-sent-ipv6: 167943019