--- version: rssac002v3 service: a.root-servers.net start-period: '2021-09-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4727442644 dns-udp-queries-received-ipv6: 1090387701 dns-tcp-queries-received-ipv4: 282174160 dns-tcp-queries-received-ipv6: 94854716 dns-udp-responses-sent-ipv4: 4744773893 dns-udp-responses-sent-ipv6: 1117072718 dns-tcp-responses-sent-ipv4: 275324812 dns-tcp-responses-sent-ipv6: 94826083