[falko]

At least ns11 seems to work now:

server1:~# dig @ns11.grfe.net wnof.com

; <<>> DiG 9.6-ESV-R1 <<>> @ns11.grfe.net wnof.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25319
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;wnof.com.                      IN      A

;; ANSWER SECTION:
wnof.com.               86400   IN      A       38.99.159.173

;; AUTHORITY SECTION:
wnof.com.               86400   IN      NS      ns11.grfe.net.
wnof.com.               86400   IN      NS      ns12.grfe.net.

;; ADDITIONAL SECTION:
ns12.grfe.net.          84143   IN      A       38.99.159.170

;; Query time: 103 msec
;; SERVER: 38.99.159.169#53(38.99.159.169)
;; WHEN: Wed Mar 23 18:24:41 2011
;; MSG SIZE  rcvd: 104

server1:~# dig @ns12.grfe.net wnof.com

; <<>> DiG 9.6-ESV-R1 <<>> @ns12.grfe.net wnof.com
; (1 server found)
;; global options: +cmd
;; connection timed out; no servers could be reached
server1:~#