--- version: rssac002v3 service: a.root-servers.net start-period: '2021-06-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4793194682 dns-udp-queries-received-ipv6: 1288940760 dns-tcp-queries-received-ipv4: 307353666 dns-tcp-queries-received-ipv6: 92711510 dns-udp-responses-sent-ipv4: 4647939089 dns-udp-responses-sent-ipv6: 1286617220 dns-tcp-responses-sent-ipv4: 292013887 dns-tcp-responses-sent-ipv6: 92397768