--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5436103806 dns-udp-queries-received-ipv6: 1129611815 dns-tcp-queries-received-ipv4: 504458196 dns-tcp-queries-received-ipv6: 132233436 dns-udp-responses-sent-ipv4: 4735371625 dns-udp-responses-sent-ipv6: 1107971109 dns-tcp-responses-sent-ipv4: 462016731 dns-tcp-responses-sent-ipv6: 119714194