name servers

[Florian Effenberger]

Hello,

I just compared some name server entries at rs.internic.net

   Server Name: NS.FIRSTNAMESERVER.DE
   IP Address: 123.45.678.9
   Registrar: CORE INTERNET COUNCIL OF REGISTRARS
   Whois Server: whois.corenic.net
   Referral URL: www.corenic.net

   Server Name: NS2.SECONDNAMESERVER.DE
   Registrar: TUCOWS.COM, INC.
   Whois Server: whois.opensrs.net
   Referral URL: www.opensrs.org

Why does the name server registered via Tucows not show the IP
address?

Thanks,
       Florian