--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5582001137 dns-udp-queries-received-ipv6: 966736396 dns-tcp-queries-received-ipv4: 419795034 dns-tcp-queries-received-ipv6: 111157128 dns-udp-responses-sent-ipv4: 4443358947 dns-udp-responses-sent-ipv6: 923142487 dns-tcp-responses-sent-ipv4: 355491182 dns-tcp-responses-sent-ipv6: 106155759