--- version: rssac002v3 service: a.root-servers.net start-period: '2019-08-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6583541385 dns-udp-queries-received-ipv6: 1355553540 dns-tcp-queries-received-ipv4: 196016680 dns-tcp-queries-received-ipv6: 32233511 dns-udp-responses-sent-ipv4: 6429033744 dns-udp-responses-sent-ipv6: 1354913208 dns-tcp-responses-sent-ipv4: 191163693 dns-tcp-responses-sent-ipv6: 33069993