--- version: rssac002v3 service: a.root-servers.net start-period: '2019-01-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5259456697 dns-udp-queries-received-ipv6: 795228421 dns-tcp-queries-received-ipv4: 184142190 dns-tcp-queries-received-ipv6: 35299395 dns-udp-responses-sent-ipv4: 5140910334 dns-udp-responses-sent-ipv6: 794632042 dns-tcp-responses-sent-ipv4: 180852565 dns-tcp-responses-sent-ipv6: 36161084