--- version: rssac002v3 service: a.root-servers.net start-period: '2021-05-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5180130629 dns-udp-queries-received-ipv6: 1087649706 dns-tcp-queries-received-ipv4: 281800178 dns-tcp-queries-received-ipv6: 112514620 dns-udp-responses-sent-ipv4: 5063069848 dns-udp-responses-sent-ipv6: 1096574981 dns-tcp-responses-sent-ipv4: 272350713 dns-tcp-responses-sent-ipv6: 113045686