15 DNS NS record assets at dydns1.bt.com.
btyahoo.net
btopenworld.com
britishtelecom.com
bt.com
btmobileworld.com
btconnect.com
btyahoo.co.uk
british-telecom.co.uk
im-ee.co.uk
bt.co.uk
openreach.co.uk
btyahoo.org
btinternet.com
btyahoo.com
bt.org