220.127.116.11/2 will not resolve the following A record: it.cuimc.columbia.edu
18.104.22.168/.4.4 & 22.214.171.124 do so without issue, as well as cell providers (tested on phone)
I’m not sure of this is the correct place to report, but cannot find a more suitable one. Please if there is a more suitable place could someone direct me?
Authoritative DNS for
it.cuimc.columbia.edu, is supposed to be handled by the three name servers:
However, when querying
ext-ns1.columbia.edu for the SOA (Start Of Authority) record of
it.cuimc.columbia.edu, the name server
ext-ns1.columbia.edu literally says try one of these following servers:
Which is essentially creating a “loop”, as it is referring queriers back to itself.
In DNS; this is called a “lame delegation”.
The operators of the
columbia.edu domain (and the sub-delegations) would be the right place to contact.
Fix so that
ext-ns1.columbia.edu responds properly for the
ext-ns1.columbia.edu from the list of name servers in the sub-delegation for
Once they have fixed their broken DNS set up, the issues will magically go away.
Odd that every other service resolves, I guess it’s one of those “the right way” v “things working” and other providers have opted for option two.
I’ll see if it’s possible to report to Columbia
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