--- version: rssac002v3 service: i.root-servers.net start-period: '2018-06-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5439260816 dns-udp-queries-received-ipv6: 836473328 dns-tcp-queries-received-ipv4: 125897029 dns-tcp-queries-received-ipv6: 17318047 dns-udp-responses-sent-ipv4: 5559778506 dns-udp-responses-sent-ipv6: 844218120 dns-tcp-responses-sent-ipv4: 122915603 dns-tcp-responses-sent-ipv6: 17433139