--- version: rssac002v3 service: a.root-servers.net start-period: '2021-06-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5458314928 dns-udp-queries-received-ipv6: 1429357078 dns-tcp-queries-received-ipv4: 291889461 dns-tcp-queries-received-ipv6: 96694548 dns-udp-responses-sent-ipv4: 5286047695 dns-udp-responses-sent-ipv6: 1426944107 dns-tcp-responses-sent-ipv4: 281989235 dns-tcp-responses-sent-ipv6: 96419187