--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6028619625 dns-udp-queries-received-ipv6: 1193013618 dns-tcp-queries-received-ipv4: 142024131 dns-tcp-queries-received-ipv6: 36977840 dns-udp-responses-sent-ipv4: 5917035696 dns-udp-responses-sent-ipv6: 1178641169 dns-tcp-responses-sent-ipv4: 134795640 dns-tcp-responses-sent-ipv6: 34082977