--- version: rssac002v3 service: a.root-servers.net start-period: '2019-09-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6739903912 dns-udp-queries-received-ipv6: 1262582471 dns-tcp-queries-received-ipv4: 191639254 dns-tcp-queries-received-ipv6: 37356256 dns-udp-responses-sent-ipv4: 6573436572 dns-udp-responses-sent-ipv6: 1262628888 dns-tcp-responses-sent-ipv4: 187494124 dns-tcp-responses-sent-ipv6: 38071763