--- version: rssac002v3 service: a.root-servers.net start-period: '2018-06-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6355129257 dns-udp-queries-received-ipv6: 358441616 dns-tcp-queries-received-ipv4: 102455602 dns-tcp-queries-received-ipv6: 13336344 dns-udp-responses-sent-ipv4: 6261779516 dns-udp-responses-sent-ipv6: 357980718 dns-tcp-responses-sent-ipv4: 101959405 dns-tcp-responses-sent-ipv6: 13315049