--- version: rssac002v3 service: a.root-servers.net start-period: '2021-06-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5602961053 dns-udp-queries-received-ipv6: 1458294317 dns-tcp-queries-received-ipv4: 292319035 dns-tcp-queries-received-ipv6: 149001320 dns-udp-responses-sent-ipv4: 5429113355 dns-udp-responses-sent-ipv6: 1454765806 dns-tcp-responses-sent-ipv4: 282399614 dns-tcp-responses-sent-ipv6: 151574719