--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6561207668 dns-udp-queries-received-ipv6: 1243683592 dns-tcp-queries-received-ipv4: 153845153 dns-tcp-queries-received-ipv6: 39680126 dns-udp-responses-sent-ipv4: 6467510019 dns-udp-responses-sent-ipv6: 1230535056 dns-tcp-responses-sent-ipv4: 147691180 dns-tcp-responses-sent-ipv6: 36939139