[db-wg] Whois referrals changed source IP

For those of you (TLD's only?) who receives whois referrals from
whois.ripe.net and thought they would always come from 193.0.0.0/24, it
now seems that even though whois.ripe.net is in that range, the
referrals can come from at least 193.0.4.152 (as it does right now).

For us, we only allow the -V3.2.0,$IP option (stating the origin IP) if
from an "NCC IP#". For all other IP## using that option we would give an
error.

Our last request from 193.0.0.0/24 was received Nov 17 11:16:46.

Would the NCC be kind enough to officially inform of which range(s) the
requests can come from? (I doubt it's the entire 193.0.0.0/21, which
are server networks.)

(And to think that it was actually Verisign who mailed us to let us know
they had a problem using our whois server, I find kind of funny).

-- 
Robert Martin-Legène
IT security manager
DK Hostmaster A/S