--- version: rssac002v3 service: a.root-servers.net start-period: '2019-10-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6953532599 dns-udp-queries-received-ipv6: 1381296661 dns-tcp-queries-received-ipv4: 190633335 dns-tcp-queries-received-ipv6: 50413062 dns-udp-responses-sent-ipv4: 6627489579 dns-udp-responses-sent-ipv6: 1376449970 dns-tcp-responses-sent-ipv4: 187526973 dns-tcp-responses-sent-ipv6: 50661684