--- version: rssac002v3 service: a.root-servers.net start-period: '2018-12-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5001609609 dns-udp-queries-received-ipv6: 774586168 dns-tcp-queries-received-ipv4: 137006165 dns-tcp-queries-received-ipv6: 35458391 dns-udp-responses-sent-ipv4: 4891660189 dns-udp-responses-sent-ipv6: 773943373 dns-tcp-responses-sent-ipv4: 133079347 dns-tcp-responses-sent-ipv6: 35652069