--- version: rssac002v3 service: i.root-servers.net start-period: '2018-05-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5529804188 dns-udp-queries-received-ipv6: 865072908 dns-tcp-queries-received-ipv4: 124745111 dns-tcp-queries-received-ipv6: 17252831 dns-udp-responses-sent-ipv4: 5677184466 dns-udp-responses-sent-ipv6: 877262331 dns-tcp-responses-sent-ipv4: 121827018 dns-tcp-responses-sent-ipv6: 17453087