--- version: rssac002v3 service: a.root-servers.net start-period: '2021-08-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5491760802 dns-udp-queries-received-ipv6: 1304281932 dns-tcp-queries-received-ipv4: 309508043 dns-tcp-queries-received-ipv6: 102648643 dns-udp-responses-sent-ipv4: 5501000370 dns-udp-responses-sent-ipv6: 1334086542 dns-tcp-responses-sent-ipv4: 298118886 dns-tcp-responses-sent-ipv6: 102666337