--- version: rssac002v3 service: a.root-servers.net start-period: '2018-09-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4142221296 dns-udp-queries-received-ipv6: 608792467 dns-tcp-queries-received-ipv4: 108164885 dns-tcp-queries-received-ipv6: 20770005 dns-udp-responses-sent-ipv4: 4027678391 dns-udp-responses-sent-ipv6: 607807722 dns-tcp-responses-sent-ipv4: 104358004 dns-tcp-responses-sent-ipv6: 20793976