setting up local authorative name server with a no-ip.com registered domain

[Aryeh M. Friedman]

I have 3 domains that are registered with no-ip.com (istudentunion.com, 
org and net).  All three are also using their "no-ip plus" service which 
provides both static and dynamic resolution via  their nameservers.   
When I configure the domains nameservers to be theirs everything works 
great (for the most part), but when I change the nameservers to my own 
sites BIND (base 7.3-RELEASE) I can get everything to resolve locally 
and via dig/host/nslookup remotely (if and only if I specify the 
nameserver by IP).   What appears to be happing is this:

~/Desktop:aryeh at flosoft% !d
dig ns istudentunion.org +trace

; <<>> DiG 9.4.3-P2 <<>> ns istudentunion.org +trace
;; global options:  printcmd
.            463753    IN    NS    I.ROOT-SERVERS.NET.
.            463753    IN    NS    C.ROOT-SERVERS.NET.
.            463753    IN    NS    L.ROOT-SERVERS.NET.
.            463753    IN    NS    K.ROOT-SERVERS.NET.
.            463753    IN    NS    M.ROOT-SERVERS.NET.
.            463753    IN    NS    A.ROOT-SERVERS.NET.
.            463753    IN    NS    E.ROOT-SERVERS.NET.
.            463753    IN    NS    B.ROOT-SERVERS.NET.
.            463753    IN    NS    H.ROOT-SERVERS.NET.
.            463753    IN    NS    D.ROOT-SERVERS.NET.
.            463753    IN    NS    G.ROOT-SERVERS.NET.
.            463753    IN    NS    F.ROOT-SERVERS.NET.
.            463753    IN    NS    J.ROOT-SERVERS.NET.
;; Received 500 bytes from 127.0.0.1#53(127.0.0.1) in 0 ms

org.            172800    IN    NS    B2.ORG.AFILIAS-NST.org.
org.            172800    IN    NS    A2.ORG.AFILIAS-NST.INFO.
org.            172800    IN    NS    C0.ORG.AFILIAS-NST.INFO.
org.            172800    IN    NS    B0.ORG.AFILIAS-NST.org.
org.            172800    IN    NS    A0.ORG.AFILIAS-NST.INFO.
org.            172800    IN    NS    D0.ORG.AFILIAS-NST.org.
;; Received 437 bytes from 192.203.230.10#53(E.ROOT-SERVERS.NET) in 86 ms

istudentunion.org.    86400    IN    NS    ns2.istudentunion.org.
istudentunion.org.    86400    IN    NS    ns1.istudentunion.org.
;; Received 103 bytes from 199.19.54.1#53(B0.ORG.AFILIAS-NST.org) in 88 ms

;; connection timed out; no servers could be reached