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AS151823
AS151823 China Telecom
CT-Centralsouth-China-IIP - China Telecom · registered in China
IPv4 addresses 32,768 11 prefixes · 0.001% of announced IPv4
Rank in China #176 largest network in CN by IPv4 space, of 601 · 0.01% of CN
Rank worldwide #4,797 of 79,396 networks with IPv4
IPv6 5,376 x /48 5 prefixes
Country China 5,117 ASNs registered there
IPv4 prefixes
All 11 prefixes, in address order.
175.12.0.0/18 175.12.64.0/22 175.12.68.0/22 175.12.72.0/21 175.12.80.0/20 175.12.96.0/22 175.12.100.0/22 175.12.104.0/22 175.12.108.0/23 175.12.110.0/23 175.12.112.0/20
IPv6 prefixes
All 5 prefixes.
240e:106:aa00::/39 240e:96a:4000::/36 240e:982:9b00::/40 240e:982:9d00::/40 240e:982:9e00::/40
Other ASNs named China Telecom
35 other networks use the same organisation name; together with AS151823 they announce 877,568 IPv4 addresses. Largest 30 shown.
ASN Name IPv4 addresses
AS141739 CT-CHONGQING-MAN2-AP - China Telecom CN 125,952 AS135089 CHINANET-Guangzhou-Southbase-IDC - China Telecom CN 120,576 AS140527 CHINANET-ANHUI-WUHU-IDC - China Telecom CN 98,560 AS151185 CT-XIANGYANG-IDC2 - China Telecom CN 83,968 AS141771 CHINANET-HEBEI-ZHANGJIAKOU-MAN - China Telecom CN 59,904 AS138169 ASEAN-INTERNATIONAL-INFORMATION-GARDEN-IDC - China Telecom CN 55,296 AS141998 CHINANET-LANZHOU-IDC - China Telecom CN 54,272 AS146966 CHINANET-YANGZHOUNORTH-IDC - China Telecom CN 38,400 AS148981 CHINANET-HUBEI-SHIYAN-IDC - China Telecom CN 25,856 AS132225 CHINATELECOM-QINGHAI-5G-NETWORK - China Telecom CN 20,992 AS134425 CHINANET-HEFEI-QIMENLU-IDC - China Telecom CN 19,456 AS149178 CT-HEFEI-NANGANG-IDC - China Telecom CN 16,384 AS149837 ChinaNet-JX-Yunhe-IDC - China Telecom CN 16,384 AS140636 CHINANET-IOT-BEIJING - China Telecom CN 14,848 AS140638 CHINANET-IOT-SICHUAN - China Telecom CN 14,848 AS142404 CHINANET-AS-AP - China Telecom CN 10,240 AS147038 CHINANET-QINGYANG-IDC - China Telecom CN 10,240 AS150145 CHINANET-HUBEI-SANXIA-IDC - China Telecom CN 8,448 AS148969 CHINANET-JIANGXI-LINKONG-IDC - China Telecom CN 8,192 AS132536 CHINANET-TIANJIN-MAN-NEW - China Telecom CN 6,400 AS138991 CHINATELECOM-GUANGXI-LIUZHOU-IDC - China Telecom CN 5,632 AS142608 ChinaNet-Anhui-Bengbu-IDC - China Telecom CN 4,864 AS151397 CT-eSurfingCloud-CDN - China Telecom CN 4,864 AS141006 CT-NEIMENGGU-WULANCHABU-MAN - China Telecom CN 4,096 AS132833 CHINANET-ANHUI-WUHU-NEWIDC - China Telecom CN 4,096 AS140903 CHINANET-HEBEI-BAODING-MAN - CHINA TELECOM CN 4,096 AS138570 CT-Anqing-IDC - China Telecom CN 2,304 AS132437 CHINANET-HUAIBEI-IDC - China Telecom CN 2,048 AS149979 ChinaNet-Hunan-Across-region-IDC - China Telecom CN 1,280 AS58518 CHINATELECOM-CDMANetwork-BG-Guangzhou - China Telecom CN 1,280
Similar-sized networks in China
ASN Name IPv4 addresses
AS134542 #173 UNICOM-GUIAN - China Unicom IP network33,792 AS140716 #174 UNICOM-JSWX-IDC - UNICOM JiangSu WuXi IDC network33,280 AS63648 #175 XJKJ - Beijing Xiaoju Science and Technology Co., Ltd.33,024 AS141425 #177 CMNET-GUANGDONG-CN - China Mobile Group Guangdong communications corporation32,256 AS139201 #178 CHINANET-Jiangxi-Jiujiang-IDC - Jiangxi Jiujiang IDC30,720 AS138407 #179 CMNET-GZIDC-CN - The Internet Data Center of Guizhou Mobile Communication Company Limited30,464
IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources