--- version: rssac002v3 service: a.root-servers.net start-period: '2018-07-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3857381118 dns-udp-queries-received-ipv6: 456905765 dns-tcp-queries-received-ipv4: 127502479 dns-tcp-queries-received-ipv6: 19168669 dns-udp-responses-sent-ipv4: 3760243942 dns-udp-responses-sent-ipv6: 456362554 dns-tcp-responses-sent-ipv4: 124738069 dns-tcp-responses-sent-ipv6: 19222887