{"kind":"host","input":"bbc.co.uk","report":{"host":"bbc.co.uk","checkedAt":"2026-10-31T07:54:17.962Z","a":{"status":"found","values":["151.101.64.81","151.101.128.81","151.101.192.81","151.101.0.81"],"ttl":217,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2a04:4e42:200::81","2a04:4e42:400::81","2a04:4e42:600::81","2a04:4e42::81"],"ttl":289,"via":"Cloudflare","cname":[]},"verdict":"dual-stack","www":{"host":"www.bbc.co.uk","a":{"status":"found","values":["151.101.64.81","151.101.128.81","151.101.192.81","151.101.0.81"],"ttl":9,"via":"Cloudflare","cname":["www.bbc.co.uk.pri.bbc.co.uk","bbc.map.fastly.net"]},"aaaa":{"status":"absent","via":"Cloudflare","cname":["www.bbc.co.uk.pri.bbc.co.uk","bbc.map.fastly.net"]},"verdict":"ipv4-only"}},"readiness":{"grade":"C","summary":"Works over IPv6, with gaps: www doesn't fully work over IPv6; its mail servers lack IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"bbc.co.uk has 4 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2a04:4e42:200::81","result":"answers","port":443},{"address":"2a04:4e42:400::81","result":"answers","port":443},{"address":"2a04:4e42:600::81","result":"answers","port":443},{"address":"2a04:4e42::81","result":"answers","port":443}]},{"key":"www","label":"www over IPv6","status":"fail","detail":"www.bbc.co.uk has no AAAA record."},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"fail","detail":"None of the mail servers has an AAAA record.","hosts":[{"host":"cluster1.eu.messagelabs.com","ipv6":false},{"host":"cluster1a.eu.messagelabs.com","ipv6":false}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"8 of 8 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"dns0.bbc.co.uk","ipv6":true},{"host":"dns0.bbc.com","ipv6":true},{"host":"dns1.bbc.co.uk","ipv6":true},{"host":"dns1.bbc.com","ipv6":true},{"host":"ddns0.bbc.co.uk","ipv6":true},{"host":"ddns0.bbc.com","ipv6":true},{"host":"ddns1.bbc.co.uk","ipv6":true},{"host":"ddns1.bbc.com","ipv6":true}]}]},"https":{"status":"fail","problem":"redirect-no-ipv6","summary":"Redirects to www.bbc.co.uk, which has no IPv6 address — so IPv6 visitors end up needing IPv4 after all.","hops":[{"url":"https://bbc.co.uk/","address":"2a04:4e42:200::81","status":301,"tls":"valid"},{"url":"https://www.bbc.co.uk/","note":"redirects to www.bbc.co.uk, which has no IPv6 address"}]},"receiptId":"6YrXy5Nntc"}