1b.ncomputers.org has no CNAME records.
Question and response
Question
dig 1b.ncomputers.org. NS
Answer
The response has no answer records.
Authority
ncomputers.org. 3214 SOA 1a.ncomputers.org. webmaster.ncomputers.org. 2026022402 43200 7200 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0