--- version: rssac002v3 service: a.root-servers.net start-period: '2021-08-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5481568412 dns-udp-queries-received-ipv6: 1333912874 dns-tcp-queries-received-ipv4: 311144897 dns-tcp-queries-received-ipv6: 102049158 dns-udp-responses-sent-ipv4: 5494702723 dns-udp-responses-sent-ipv6: 1362547367 dns-tcp-responses-sent-ipv4: 297399699 dns-tcp-responses-sent-ipv6: 102054121