--- version: rssac002v3 service: i.root-servers.net start-period: '2019-02-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6795838917 dns-udp-queries-received-ipv6: 1365780066 dns-tcp-queries-received-ipv4: 148393424 dns-tcp-queries-received-ipv6: 34884403 dns-udp-responses-sent-ipv4: 6718319293 dns-udp-responses-sent-ipv6: 1360649976 dns-tcp-responses-sent-ipv4: 141967312 dns-tcp-responses-sent-ipv6: 31623675