--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6213451881 dns-udp-queries-received-ipv6: 1188219644 dns-tcp-queries-received-ipv4: 173530564 dns-tcp-queries-received-ipv6: 34655873 dns-udp-responses-sent-ipv4: 6061369983 dns-udp-responses-sent-ipv6: 1187040307 dns-tcp-responses-sent-ipv4: 168938200 dns-tcp-responses-sent-ipv6: 35655428