how nameserver load balancing?

[HongSheng Wu]

Hi,all
Does anybody known which domain registrar can let me add multiple ip  
to one nameserver for the load balancing reason?

e.g.


ns1.dns.com.cn.		3600	IN	A	124.42.122.8
ns1.dns.com.cn.		3600	IN	A	122.70.138.5
ns1.dns.com.cn.		3600	IN	A	124.42.122.9
ns1.dns.com.cn.		3600	IN	A	122.70.138.6



Best Regards

----------
HongSheng Wu

E-Mail: silence.z at gmail.com
Blog:http://wuhongsheng.com/

DNSPod:http://www.dnspod.com/