--- version: rssac002v3 service: a.root-servers.net start-period: '2021-07-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 8132484893 dns-udp-queries-received-ipv6: 1334093811 dns-tcp-queries-received-ipv4: 293502784 dns-tcp-queries-received-ipv6: 101512386 dns-udp-responses-sent-ipv4: 7976704393 dns-udp-responses-sent-ipv6: 1332559929 dns-tcp-responses-sent-ipv4: 286724600 dns-tcp-responses-sent-ipv6: 101834985