--- version: rssac002v3 service: j.root-servers.net start-period: '2021-05-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6427939106 dns-udp-queries-received-ipv6: 1547855084 dns-tcp-queries-received-ipv4: 545662631 dns-tcp-queries-received-ipv6: 162595120 dns-udp-responses-sent-ipv4: 5936676434 dns-udp-responses-sent-ipv6: 1536945008 dns-tcp-responses-sent-ipv4: 387110556 dns-tcp-responses-sent-ipv6: 170273676