--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-02T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5327232855 dns-udp-queries-received-ipv6: 999924071 dns-tcp-queries-received-ipv4: 499424051 dns-tcp-queries-received-ipv6: 109888793 dns-udp-responses-sent-ipv4: 4620955459 dns-udp-responses-sent-ipv6: 1017885138 dns-tcp-responses-sent-ipv4: 435709698 dns-tcp-responses-sent-ipv6: 103499925