--- version: rssac002v3 service: a.root-servers.net start-period: '2019-03-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5663121550 dns-udp-queries-received-ipv6: 859053310 dns-tcp-queries-received-ipv4: 183533328 dns-tcp-queries-received-ipv6: 29766631 dns-udp-responses-sent-ipv4: 5531121600 dns-udp-responses-sent-ipv6: 858552713 dns-tcp-responses-sent-ipv4: 179394881 dns-tcp-responses-sent-ipv6: 30051589