--- version: rssac002v3 service: a.root-servers.net start-period: '2020-12-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5637211218 dns-udp-queries-received-ipv6: 1153941595 dns-tcp-queries-received-ipv4: 285353625 dns-tcp-queries-received-ipv6: 142933702 dns-udp-responses-sent-ipv4: 5469283448 dns-udp-responses-sent-ipv6: 1151840484 dns-tcp-responses-sent-ipv4: 272754882 dns-tcp-responses-sent-ipv6: 143506333