--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6287221575 dns-udp-queries-received-ipv6: 1227557764 dns-tcp-queries-received-ipv4: 163583791 dns-tcp-queries-received-ipv6: 31431130 dns-udp-responses-sent-ipv4: 6144941628 dns-udp-responses-sent-ipv6: 1226472460 dns-tcp-responses-sent-ipv4: 160614736 dns-tcp-responses-sent-ipv6: 32102473