--- version: rssac002v3 service: a.root-servers.net start-period: '2019-01-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5707641887 dns-udp-queries-received-ipv6: 791252607 dns-tcp-queries-received-ipv4: 164999570 dns-tcp-queries-received-ipv6: 35227076 dns-udp-responses-sent-ipv4: 5584765964 dns-udp-responses-sent-ipv6: 790730525 dns-tcp-responses-sent-ipv4: 161874237 dns-tcp-responses-sent-ipv6: 31944394