--- version: rssac002v3 service: a.root-servers.net start-period: '2018-07-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5175934876 dns-udp-queries-received-ipv6: 704109430 dns-tcp-queries-received-ipv4: 117765761 dns-tcp-queries-received-ipv6: 19300491 dns-udp-responses-sent-ipv4: 5081225314 dns-udp-responses-sent-ipv6: 703804542 dns-tcp-responses-sent-ipv4: 114260882 dns-tcp-responses-sent-ipv6: 19309009