--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6177907618 dns-udp-queries-received-ipv6: 1256734218 dns-tcp-queries-received-ipv4: 197745956 dns-tcp-queries-received-ipv6: 32376944 dns-udp-responses-sent-ipv4: 6036933652 dns-udp-responses-sent-ipv6: 1255723484 dns-tcp-responses-sent-ipv4: 194691641 dns-tcp-responses-sent-ipv6: 33121426