ban server for spamming purposes

[pokermagic2]

We have seen several spammers whom seem to change ip addresses and would like to stop them. Here is some information below. My question is... is the only solution to ban the range of IP addresses? I don't necessarily want to do that but wanted to see if there was another way.

inetnum: 121.224.0.0 - 121.239.255.255

netname: CHINANET-JS

descr: CHINANET jiangsu province network

descr: China Telecom

descr: A12,Xin-Jie-Kou-Wai Street

descr: Beijing 100088

country: CN

admin-c: CH93-AP

tech-c: CJ186-AP

mnt-by: APNIC-HM

mnt-lower: MAINT-CHINANET-JS

mnt-routes: MAINT-CHINANET-JS

status: ALLOCATED PORTABLE

changed: hm-changed@apnic.net 20060630

source: APNIC



route: 121.224.0.0/12

descr: From Jiangsu Network of ChinaTelecom

origin: AS4134

mnt-by: MAINT-CHINANET

changed: dingsy@cndata.com 20060703

source: APNIC



role: CHINANET JIANGSU

address: No.268,Hanzhong Road,Nanjing 210029

country: CN

phone: +86-25-6588783

fax-no: +86-25-6588740

e-mail: ip@jsinfo.net

trouble: send anti-spam reports to spam@jsinfo.net

trouble: send abuse reports to abuse@jsinfo.net

trouble: times in GMT+8

admin-c: CH360-AP

tech-c: CS306-AP

tech-c: CN142-AP

nic-hdl: CJ186-AP

remarks: www.jsinfo.net

notify: ip@jsinfo.net

mnt-by: MAINT-CHINANET-JS

changed: dns@ptt.js.cn 20020530

changed: ip@jsinfo.net 20021213

source: APNIC



person: Chinanet Hostmaster

nic-hdl: CH93-AP

e-mail: anti-spam@ns.chinanet.cn.net

address: No.31 ,jingrong street,beijing

address: 100032

phone: +86-10-58501724

fax-no: +86-10-58501724

country: CN

changed: dingsy@cndata.com 20070416

mnt-by: MAINT-CHINANET

source: APNIC


Thanks in advance.