--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4959722508 dns-udp-queries-received-ipv6: 945326502 dns-tcp-queries-received-ipv4: 498907361 dns-tcp-queries-received-ipv6: 106211205 dns-udp-responses-sent-ipv4: 4294664699 dns-udp-responses-sent-ipv6: 951198154 dns-tcp-responses-sent-ipv4: 430240615 dns-tcp-responses-sent-ipv6: 102063574