--- version: rssac002v3 service: a.root-servers.net start-period: '2021-09-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5264281812 dns-udp-queries-received-ipv6: 1169220532 dns-tcp-queries-received-ipv4: 303502733 dns-tcp-queries-received-ipv6: 96502075 dns-udp-responses-sent-ipv4: 5255986262 dns-udp-responses-sent-ipv6: 1188380830 dns-tcp-responses-sent-ipv4: 293775468 dns-tcp-responses-sent-ipv6: 96589818