--- version: rssac002v3 service: i.root-servers.net start-period: '2019-02-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6991718256 dns-udp-queries-received-ipv6: 1321806338 dns-tcp-queries-received-ipv4: 156061118 dns-tcp-queries-received-ipv6: 34711636 dns-udp-responses-sent-ipv4: 6865489606 dns-udp-responses-sent-ipv6: 1315876448 dns-tcp-responses-sent-ipv4: 141436524 dns-tcp-responses-sent-ipv6: 31472959