--- version: rssac002v3 service: i.root-servers.net start-period: '2019-02-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6847167577 dns-udp-queries-received-ipv6: 1362594188 dns-tcp-queries-received-ipv4: 154902615 dns-tcp-queries-received-ipv6: 35526409 dns-udp-responses-sent-ipv4: 6782820543 dns-udp-responses-sent-ipv6: 1360122070 dns-tcp-responses-sent-ipv4: 148306191 dns-tcp-responses-sent-ipv6: 32159440