--- version: rssac002v3 service: j.root-servers.net start-period: '2021-07-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6574286420 dns-udp-queries-received-ipv6: 1490781021 dns-tcp-queries-received-ipv4: 608409999 dns-tcp-queries-received-ipv6: 119709784 dns-udp-responses-sent-ipv4: 6019524518 dns-udp-responses-sent-ipv6: 1479864004 dns-tcp-responses-sent-ipv4: 425701054 dns-tcp-responses-sent-ipv6: 116105729