resolution problem

[Con Wieland]

I am having an issue resolving www.cloudsat.cira.colostate.edu from 2 of my name servers. I have 2 others with identical configs that resolve correctly. A normal lookup shows a server fail but a +trace looks ok. Any ideas how to better troubleshoot the issue?

dig www.cloudsat.cira.colostate.edu @ns1.service.uci.edu

; <<>> DiG 9.3.4-P1 <<>> www.cloudsat.cira.colostate.edu @ns1.service.uci.edu
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 1057
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.cloudsat.cira.colostate.edu. IN    A

;; Query time: 4992 msec
;; SERVER: 128.200.1.201#53(128.200.1.201)
;; WHEN: Wed May 18 14:08:26 2016
;; MSG SIZE  rcvd: 49




dig www.cloudsat.cira.colostate.edu @ns1.service.uci.edu +trace

; <<>> DiG 9.3.4-P1 <<>> www.cloudsat.cira.colostate.edu @ns1.service.uci.edu +trace
; (1 server found)
;; global options:  printcmd
.                       350434  IN      NS      d.root-servers.net.
.                       350434  IN      NS      e.root-servers.net.
.                       350434  IN      NS      c.root-servers.net.
.                       350434  IN      NS      a.root-servers.net.
.                       350434  IN      NS      l.root-servers.net.
.                       350434  IN      NS      f.root-servers.net.
.                       350434  IN      NS      g.root-servers.net.
.                       350434  IN      NS      i.root-servers.net.
.                       350434  IN      NS      j.root-servers.net.
.                       350434  IN      NS      b.root-servers.net.
.                       350434  IN      NS      k.root-servers.net.
.                       350434  IN      NS      m.root-servers.net.
.                       350434  IN      NS      h.root-servers.net.
;; Received 496 bytes from 128.200.1.201#53(128.200.1.201) in 2 ms

edu.                    172800  IN      NS      l.edu-servers.net.
edu.                    172800  IN      NS      a.edu-servers.net.
edu.                    172800  IN      NS      d.edu-servers.net.
edu.                    172800  IN      NS      f.edu-servers.net.
edu.                    172800  IN      NS      g.edu-servers.net.
edu.                    172800  IN      NS      c.edu-servers.net.
;; Received 284 bytes from 199.7.91.13#53(d.root-servers.net) in 73 ms

colostate.edu.          172800  IN      NS      dns1.colostate.edu.
colostate.edu.          172800  IN      NS      dns3.colostate.edu.
;; Received 119 bytes from 192.41.162.30#53(l.edu-servers.net) in 78 ms

www.cloudsat.cira.colostate.edu. 3600 IN CNAME  dpc.cira.colostate.edu.
dpc.cira.colostate.edu. 3600    IN      A       129.82.109.62
;; Received 83 bytes from 129.82.103.121#53(dns1.colostate.edu) in 36 ms
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