--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-02T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5084681271 dns-udp-queries-received-ipv6: 957219578 dns-tcp-queries-received-ipv4: 425226563 dns-tcp-queries-received-ipv6: 131077601 dns-udp-responses-sent-ipv4: 3798958663 dns-udp-responses-sent-ipv6: 757645147 dns-tcp-responses-sent-ipv4: 350221744 dns-tcp-responses-sent-ipv6: 103617743