--- version: rssac002v3 service: a.root-servers.net start-period: '2018-05-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4390596094 dns-udp-queries-received-ipv6: 322734112 dns-tcp-queries-received-ipv4: 123856552 dns-tcp-queries-received-ipv6: 13549584 dns-udp-responses-sent-ipv4: 4319974238 dns-udp-responses-sent-ipv6: 321982860 dns-tcp-responses-sent-ipv4: 123572854 dns-tcp-responses-sent-ipv6: 13582584