Hey Bill,
Curious... what's this line about?
190.230.73.66.in-addr.arpa. CNAME 190.184.230.73.66.in-addr.arpa.
Seems rather redundant.
Nope. It's part of a 'classless' delegation. Each of the 6 usable addresses in 66.73.230.184/29 has a CNAME record in the parent zone:
185.230.73.66.in-addr.arpa. 7200 IN CNAME 185.184.230.73.66.in-addr.arpa. 186.230.73.66.in-addr.arpa. 7200 IN CNAME 186.184.230.73.66.in-addr.arpa. 187.230.73.66.in-addr.arpa. 7200 IN CNAME 187.184.230.73.66.in-addr.arpa. 188.230.73.66.in-addr.arpa. 7200 IN CNAME 188.184.230.73.66.in-addr.arpa. 189.230.73.66.in-addr.arpa. 7200 IN CNAME 189.184.230.73.66.in-addr.arpa. 190.230.73.66.in-addr.arpa. 7200 IN CNAME 190.184.230.73.66.in-addr.arpa.
The 230.73.66.in-addr.arpa zone is handled by SBC (formerly Ameritech) because they control the enclosing /14 network. They delegate a sub-zone to me:
184.230.73.66.in-addr.arpa. 86400 IN NS fireproof.scconsult.com. 184.230.73.66.in-addr.arpa. 86400 IN NS ns.scconsult.com. 184.230.73.66.in-addr.arpa. 86400 IN NS ns13.zoneedit.com. 184.230.73.66.in-addr.arpa. 86400 IN NS ns14.zoneedit.com. 184.230.73.66.in-addr.arpa. 86400 IN NS toaster.scconsult.com.
(yes, there's overkill there. The first and last really should not be out in the wild, but I keep not getting around to setting up the split-horizon DNS...)
Note that all those CNAME records point into that zone which is delegated to me.
--
Bill Cole [EMAIL PROTECTED]
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