--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5512782849 dns-udp-queries-received-ipv6: 1236052632 dns-tcp-queries-received-ipv4: 157517561 dns-tcp-queries-received-ipv6: 30845543 dns-udp-responses-sent-ipv4: 5391441593 dns-udp-responses-sent-ipv6: 1234672627 dns-tcp-responses-sent-ipv4: 154611357 dns-tcp-responses-sent-ipv6: 31455388