--- version: rssac002v3 service: a.root-servers.net start-period: '2019-09-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6436511618 dns-udp-queries-received-ipv6: 1201162523 dns-tcp-queries-received-ipv4: 187914261 dns-tcp-queries-received-ipv6: 32511257 dns-udp-responses-sent-ipv4: 6267936146 dns-udp-responses-sent-ipv6: 1200575180 dns-tcp-responses-sent-ipv4: 183971595 dns-tcp-responses-sent-ipv6: 33127794