--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7183862585 dns-udp-queries-received-ipv6: 1286084244 dns-tcp-queries-received-ipv4: 125136947 dns-tcp-queries-received-ipv6: 31002592 dns-udp-responses-sent-ipv4: 7077421285 dns-udp-responses-sent-ipv6: 1302318297 dns-tcp-responses-sent-ipv4: 120743366 dns-tcp-responses-sent-ipv6: 29456111