--- version: rssac002v3 service: a.root-servers.net start-period: '2019-05-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6351773557 dns-udp-queries-received-ipv6: 910349495 dns-tcp-queries-received-ipv4: 202823529 dns-tcp-queries-received-ipv6: 30022436 dns-udp-responses-sent-ipv4: 6222047733 dns-udp-responses-sent-ipv6: 909844952 dns-tcp-responses-sent-ipv4: 199506775 dns-tcp-responses-sent-ipv6: 30754389