中国典型的四大网络的IP地址范围：
根据华南地区网络中心的通知，从 1997年 5月 1日起，中国四大网络 (中国公用计算机互联网、中国教育和科研计算机网、中国科学技术网、中国金桥信息网 )正式连通。自此，访问以下的 IP地址均不需要经过国外的节点中转。
网络地址 掩码 网络名称
=============== =============== ============
159.226.0.0 255.255.0.0 NCFC(CASNET)
161.207.0.0 255.255.0.0 CNPCNET
162.105.0.0 255.255.0.0 CERNET
166.111.0.0 255.255.0.0 CERNET
168.160.0.0 255.255.0.0 SSTC-ISTIC
202.4.128.0 255.255.224.0 CERNET
202.24.0.0 255.255.252.0 UNKNOWN
202.38.8.0 255.255.248.0 CIAE-CN
202.38.64.0 255.255.224.0 CERNET
202.38.128.0 255.255.254.0 NCFC(CASNET)
202.38.164.0 255.255.252.0 FAWVOLKS-CN
202.38.192.0 255.255.192.0 CERNET
202.90.0.0 255.255.248.0 TOPSLANE-CN
202.91.128.0 255.255.254.0 SIE-CN
202.92.0.0 255.255.252.0 NJYY-CN
202.93.0.0 255.255.240.0 CNINFO-CN
202.94.0.0 255.255.252.0 CNTBONE-CN
202.95.0.0 255.255.252.0 EASTNET-CN
202.96.0.0 255.255.0.0 CHINANET-CN
202.97.0.0 255.255.0.0 CHINANET-CN
202.98.0.0 255.255.0.0 CHINANET-CN
202.99.0.0 255.255.0.0 CHINANET-CN
202.100.0.0 255.255.0.0 CHINANET-CN
202.101.0.0 255.255.0.0 CHINANET-CN
202.102.0.0 255.255.0.0 CHINANET-CN
202.103.0.0 255.255.0.0 CHINANET-CN
202.112.0.0 255.255.0.0 CERNET
202.113.0.0 255.255.0.0 CERNET
202.114.0.0 255.255.0.0 CERNET
202.115.0.0 255.255.0.0 CERNET
202.116.0.0 255.255.0.0 CERNET
202.117.0.0 255.255.0.0 CERNET
202.118.0.0 255.255.0.0 CERNET
202.119.0.0 255.255.0.0 CERNET
202.120.0.0 255.255.0.0 CERNET
202.121.0.0 255.255.0.0 CERNET
202.122.128.0 255.255.255.0 BRIAT-CN
202.127.12.0 255.255.252.0 NJIC-CN
202.127.40.0 255.255.248.0 AGRI-CN
202.192.0.0 255.255.0.0 CERNET
202.193.0.0 255.255.0.0 CERNET
202.194.0.0 255.255.0.0 CERNET
202.195.0.0 255.255.0.0 CERNET
202.196.0.0 255.255.0.0 CERNET
202.197.0.0 255.255.0.0 CERNET
202.198.0.0 255.255.0.0 CERNET
202.199.0.0 255.255.0.0 CERNET
202.200.0.0 255.255.0.0 CERNET
202.201.0.0 255.255.0.0 CERNET
202.202.0.0 255.255.0.0 CERNET
202.203.0.0 255.255.0.0 CERNET
202.204.0.0 255.255.0.0 CERNET
202.205.0.0 255.255.0.0 CERNET
202.206.0.0 255.255.0.0 CERNET
202.207.0.0 255.255.0.0 CERNET
203.88.0.0 255.255.252.0 FAST-CN
203.90.0.0 255.255.252.0 PANNET-CN
203.93.0.0 255.255.128.0 JITONG-CN
203.196.0.0 255.255.252.0 INTERCOM-CN
203.208.0.0 255.255.252.0 COL-CN
210.32.0.0 255.255.0.0 CERNET
210.33.0.0 255.255.0.0 CERNET
210.33.0.0 255.255.0.0 CERNET
210.34.0.0 255.255.0.0 CERNET
210.35.0.0 255.255.0.0 CERNET
210.36.0.0 255.255.0.0 CERNET
210.37.0.0 255.255.0.0 CERNET
210.38.0.0 255.255.0.0 CERNET
210.39.0.0 255.255.0.0 CERNET
210.40.0.0 255.255.0.0 CERNET
210.41.0.0 255.255.0.0 CERNET
210.42.0.0 255.255.0.0 CERNET
210.43.0.0 255.255.0.0 CERNET
210.44.0.0 255.255.0.0 CERNET
210.45.0.0 255.255.0.0 CERNET
210.46.0.0 255.255.0.0 CERNET
210.47.0.0 255.255.0.0 CERNET
210.72.64.0 255.255.255.0 NCFC(CASNET
测试地址如下：
网络地址 掩码 网络名称
=============== =============== ============
159.226.0.0 255.255.0.0 NCFC(CASNET)
161.207.0.0 255.255.0.0 CNPCNET
162.105.0.0 255.255.0.0 CERNET
166.111.0.0 255.255.0.0 CERNET
168.160.0.0 255.255.0.0 SSTC-ISTIC
202.4.128.0 255.255.224.0 CERNET
202.24.0.0 255.255.252.0 UNKNOWN
202.38.8.0 255.255.248.0 CIAE-CN
202.38.64.0 255.255.224.0 CERNET
202.38.128.0 255.255.254.0 NCFC(CASNET)
202.38.164.0 255.255.252.0 FAWVOLKS-CN
202.38.192.0 255.255.192.0 CERNET
202.90.0.0 255.255.248.0 TOPSLANE-CN
202.91.128.0 255.255.254.0 SIE-CN
202.92.0.0 255.255.252.0 NJYY-CN
202.93.0.0 255.255.240.0 CNINFO-CN
202.94.0.0 255.255.252.0 CNTBONE-CN
202.95.0.0 255.255.252.0 EASTNET-CN
202.96.0.0 255.255.0.0 CHINANET-CN
202.97.0.0 255.255.0.0 CHINANET-CN
202.98.0.0 255.255.0.0 CHINANET-CN
202.99.0.0 255.255.0.0 CHINANET-CN
202.100.0.0 255.255.0.0 CHINANET-CN
202.101.0.0 255.255.0.0 CHINANET-CN
202.102.0.0 255.255.0.0 CHINANET-CN
202.103.0.0 255.255.0.0 CHINANET-CN
202.112.0.0 255.255.0.0 CERNET
202.113.0.0 255.255.0.0 CERNET
202.114.0.0 255.255.0.0 CERNET
202.115.0.0 255.255.0.0 CERNET
202.116.0.0 255.255.0.0 CERNET
202.117.0.0 255.255.0.0 CERNET
202.118.0.0 255.255.0.0 CERNET
202.119.0.0 255.255.0.0 CERNET
202.120.0.0 255.255.0.0 CERNET
202.121.0.0 255.255.0.0 CERNET
202.122.128.0 255.255.255.0 BRIAT-CN
202.127.12.0 255.255.252.0 NJIC-CN
202.127.40.0 255.255.248.0 AGRI-CN
202.192.0.0 255.255.0.0 CERNET
202.193.0.0 255.255.0.0 CERNET
202.194.0.0 255.255.0.0 CERNET
202.195.0.0 255.255.0.0 CERNET
202.196.0.0 255.255.0.0 CERNET
202.197.0.0 255.255.0.0 CERNET
202.198.0.0 255.255.0.0 CERNET
202.199.0.0 255.255.0.0 CERNET
202.200.0.0 255.255.0.0 CERNET
202.201.0.0 255.255.0.0 CERNET
202.202.0.0 255.255.0.0 CERNET
202.203.0.0 255.255.0.0 CERNET
202.204.0.0 255.255.0.0 CERNET
202.205.0.0 255.255.0.0 CERNET
202.206.0.0 255.255.0.0 CERNET
202.207.0.0 255.255.0.0 CERNET
203.88.0.0 255.255.252.0 FAST-CN
203.90.0.0 255.255.252.0 PANNET-CN
203.93.0.0 255.255.128.0 JITONG-CN
203.196.0.0 255.255.252.0 INTERCOM-CN
203.208.0.0 255.255.252.0 COL-CN
210.32.0.0 255.255.0.0 CERNET
210.33.0.0 255.255.0.0 CERNET
210.33.0.0 255.255.0.0 CERNET
210.34.0.0 255.255.0.0 CERNET
210.35.0.0 255.255.0.0 CERNET
210.36.0.0 255.255.0.0 CERNET
210.37.0.0 255.255.0.0 CERNET
210.38.0.0 255.255.0.0 CERNET
210.39.0.0 255.255.0.0 CERNET
210.40.0.0 255.255.0.0 CERNET
210.41.0.0 255.255.0.0 CERNET
210.42.0.0 255.255.0.0 CERNET
210.43.0.0 255.255.0.0 CERNET
210.44.0.0 255.255.0.0 CERNET
210.45.0.0 255.255.0.0 CERNET
210.46.0.0 255.255.0.0 CERNET
210.47.0.0 255.255.0.0 CERNET
210.72.64.0 255.255.255.0 NCFC(CASNET
————————————————
ping :
159.226.0.0
正在 Ping 159.226.0.0 具有 32 字节的数据:
请求超时。
请求超时。
请求超时。
请求超时。
159.226.0.0 的 Ping 统计信息:
数据包: 已发送 = 4，已接收 = 0，丢失 = 4 (100% 丢失)，
C:\Users\Administrator>ping 162.105.0.0
正在 Ping 162.105.0.0 具有 32 字节的数据:
请求超时。
请求超时。
请求超时。
请求超时。
162.105.0.0 的 Ping 统计信息:
数据包: 已发送 = 4，已接收 = 0，丢失 = 4 (100% 丢失)，
