What are you doing to access the other registries ?
The whois client I'm using automatically selects the appropriate registry to fetch the information from. The only thing I give as argument is the IPv6 address that I do want information about.
First I use dig to get the IPv6 address for the IPv6 domain I want to use (which takes care of the daily dig test too):
dig stupid.domain.name AAAA
; <<>> DiG 9.7.3-P1 <<>> stupid.domain.name AAAA
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62671
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;stupid.domain.name. IN AAAA
;; ANSWER SECTION:
stupid.domain.name. 720 IN AAAA 2a02:80:3ffe::39
;; Query time: 20 msec
;; SERVER: 2001:470:20::2#53(2001:470:20::2)
;; WHEN: Sun Jul 10 08:31:45 2011
;; MSG SIZE rcvd: 64
Then I use the IPv6 address for the whois:
whois 2a02:80:3ffe::39
% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See http://www.ripe.net/db/support/db-terms-conditions.pdf
% Note: this output has been filtered.
% To receive output for a database update, use the "-B" flag.
% Information related to '2a02:80::/32'
inet6num: 2a02:80::/32
netname: SE-TELESERVICE-20080222
descr: Teleservice Bredband Skane AB
remarks: SE-TELESERVICE-IPV6
country: SE
org: ORG-TBSA4-RIPE
admin-c: TR1369-RIPE
tech-c: TR1369-RIPE
status: ALLOCATED-BY-RIR
mnt-by: RIPE-NCC-HM-MNT
mnt-lower: TELESERVICE-MNT
mnt-routes: TELESERVICE-MNT
source: RIPE # Filtered
organisation: ORG-TBSA4-RIPE
org-name: Teleservice Bredband Skane AB
org-type: LIR
address: Teleservice Bredband Skane AB
Jens Andersson
Bredband
BOX 123
27523 SJOBO
SWEDEN
phone: +4641625100
fax-no: +4641625125
mnt-ref: TELESERVICE-MNT
mnt-ref: RIPE-NCC-HM-MNT
mnt-by: RIPE-NCC-HM-MNT
source: RIPE # Filtered
role: TELESERVICE ROLE
address: Teleservice Bredband Skane AB
address: Vastergatan 14
S-275 23 SJOBO
Sweden
phone: +46 416-25100
fax-no: +46 416-25125
abuse-mailbox: abuse@teleservice.net
admin-c: JA838-RIPE
tech-c: JA838-RIPE
mnt-by: TELESERVICE-MNT
nic-hdl: TR1369-RIPE
source: RIPE # Filtered
% Information related to '2a02:80::/32AS34244'
route6: 2a02:80::/32
descr: TELESERVICE-NET
origin: AS34244
mnt-by: TELESERVICE-MNT
source: RIPE # Filtered
It is that easy.