以前总是看到有人很厉害，通过一个 IP 就可以找到你所在的位置，想当年 qq 软件里面某个聊天进程里面还能看到对方的 IP 地址。
计算机又怎么知道一个 IP 地址发往哪个地方，路由器又怎么知道的？
这里其实涉及一个重要知识点，AS，全球是有优先多个 AS 组成的，不同的 AS 之间是通过 自治系统编号(ASN)进行交换彼此管理的 IP 段信息交互的。
所以我特地找了一下中国有申请哪些 ASN，其实每一个公网 IP 都是属于某一个 ASN 的，ASN 是管理着一段一段的 IP 地址，所以根据 IP 就查到 ASN，大概就知道你是哪个运营商，关于地理位置这些那是由于 AS 下层还有更小一级的 AS，不断细分。
这边也搜集了一波中国目前已申请的 ASN，电线，联通，移动这些 ISP 再加上 阿里云这些云服务，手里管理着大量的 IP。
| 排序 | as自治系统号码 | 注册机构 | 分配IP个数 | 登记时间 |
|---|---|---|---|---|
| 1 | AS4134 | CHINANET-BACKBONE No.31,Jin-rong Street, CN | 121,951,744个 | 20020801 |
| 2 | AS4837 | CHINA169-BACKBONE CHINA UNICOM China169 Backbone, CN | 58,728,448个 | 20010917 |
| 3 | AS9808 | CMNET-GD Guangdong Mobile Communication Co.Ltd., CN | 47,768,320个 | 20000110 |
| 4 | AS4538 | ERX-CERNET-BKB China Education and Research Network Center, CN | 25,434,880个 | 20020801 |
| 5 | AS9394 | CTTNET China TieTong Telecommunications Corporation, CN | 22,358,784个 | 19700101 |
| 6 | AS45102 | CNNIC-ALIBABA-US-NET-AP Alibaba US Technology Co., Ltd., CN | 16,913,664个 | 19700101 |
| 7 | AS9800 | UNICOM CHINA UNICOM, CN | 11,005,952个 | 20000110 |
| 8 | AS37963 | CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co.,Ltd., CN | 9,992,704个 | 19700101 |
| 9 | AS4812 | CHINANET-SH-AP China Telecom Group, CN | 8,936,768个 | 19960109 |
| 10 | AS4808 | CHINA169-BJ China Unicom Beijing Province Network, CN | 7,842,304个 | 19960109 |
| 11 | AS24444 | CMNET-V4SHANDONG-AS-AP Shandong Mobile Communication Company Limited, CN | 5,864,192个 | 20050511 |
| 12 | AS4847 | CNIX-AP China Networks Inter-Exchange, CN | 5,855,488个 | 19960910 |
| 13 | AS56048 | CMNET-BEIJING-AP China Mobile Communicaitons Corporation, CN | 5,347,840个 | 19700101 |
| 14 | AS9929 | CUII CHINA UNICOM Industrial Internet Backbone, CN | 4,890,368个 | 20000405 |
| 15 | AS17816 | CHINA169-GZ China Unicom IP network China169 Guangdong province, CN | 4,405,760个 | 20010711 |
| 16 | AS37937 | CNNIC-EGOVNET-AP China eGovNet Information Center, CN | 4,194,304个 | 19700101 |
| 17 | AS23724 | CHINANET-IDC-BJ-AP IDC, China Telecommunications Corporation, CN | 3,872,256个 | 20030422 |
| 18 | AS24138 | CTTNET China TieTong Telecommunications Corporation, CN | 3,857,408个 | 19700101 |
| 19 | AS56046 | CMNET-JIANGSU-AP China Mobile communications corporation, CN | 3,362,304个 | 19700101 |
| 20 | AS134774 | CHINANET-GUANGDONG-SHENZHEN-MAN CHINANET Guangdong province Shenzhen MAN network, CN | 3,111,680个 | 19700101 |
| 21 | AS56041 | CMNET-ZHEJIANG-AP China Mobile communications corporation, CN | 2,995,968个 | 19700101 |
| 22 | AS134773 | CHINANET-GUANGDONG-GUANGZHOU-MAN CHINANET Guangdong province Guangzhou MAN network, CN | 2,738,944个 | 19700101 |
| 23 | AS56040 | CMNET-GUANGDONG-AP China Mobile communications corporation, CN | 2,179,072个 | 20110119 |
| 24 | AS45090 | CNNIC-TENCENT-NET-AP Shenzhen Tencent Computer Systems Company Limited, CN | 2,110,976个 | 19700101 |
| 25 | AS38348 | CNNIC-NGTC-AP New Guoxin Telecom Corporation, CN | 2,097,152个 | 19700101 |
| 26 | AS24445 | CMNET-V4HENAN-AS-AP Henan Mobile Communications Co.,Ltd, CN | 2,065,920个 | 19700101 |
| 27 | AS7497 | CSTNET-AS-AP Computer Network Information Center, CN | 2,029,568个 | 19970408 |
| 28 | AS134772 | CHINANET-GUANGDONG-DONGGUAN-MAN CHINANET Guangdong province Dongguan MAN network, CN | 1,884,928个 | 19700101 |
| 29 | AS9812 | CNNIC-CN-COLNET Oriental Cable Network Co., Ltd., CN | 1,789,952个 | 19700101 |
| 30 | AS136200 | CHINANET-GUANGDONG-FOSHAN-MAN CHINANET Guangdong province Foshan MAN network, CN | 1,547,008个 | 19700101 |
| 31 | AS4809 | CHINATELECOM-CORE-WAN-CN2 China Telecom Next Generation Carrier Network, CN | 1,272,384个 | 19960109 |
| 32 | AS132203 | TENCENT-NET-AP-CN Tencent Building, Kejizhongyi Avenue, CN | 1,259,264个 | 20120313 |
| 33 | AS7641 | CHINABTN China Broadcasting TV Net, CN | 1,189,888个 | 19700101 |
| 34 | AS56044 | CMNET-AS-LIAONING China Mobile communications corporation, CN | 1,028,864个 | 20110119 |
| 35 | AS9308 | CHINA-ABITCOOL AbitcoolChina Inc., CN | 1,000,704个 | 19700101 |
| 36 | AS17428 | CHINA-ABITCOOL 21Vianet.Co.,Ltd, CN | 974,848个 | 20001019 |
| 37 | AS17621 | CNCGROUP-SH China Unicom Shanghai network, CN | 943,872个 | 19700101 |
| 38 | AS38370 | CTTNET China TieTong Telecommunications Corporation, CN | 919,040个 | 19700101 |
| 39 | AS4814 | CHINA169-BBN CNCGROUP IP networkA!AaChina169 Beijing Broadband Network, CN | 909,824个 | 19960109 |
| 40 | AS17638 | CHINATELECOM-TJ-AS-AP ASN for TIANJIN Provincial Net of CT, CN | 904,704个 | 20021118 |
| 41 | AS17430 | GWBN-CHENGDU Beijing XiRang Media Cultural Co., Ltd., CN | 859,904个 | 19700101 |
| 42 | AS24400 | CMNET-V4SHANGHAI-AS-AP Shanghai Mobile Communications Co.,Ltd., CN | 855,040个 | 20050419 |
| 43 | AS58461 | CT-HANGZHOU-IDC No.288,Fu-chun Road, CN | 847,616个 | 20111201 |
| 44 | AS17622 | CNCGROUP-GZ China Unicom Guangzhou network, CN | 828,672个 | 19700101 |
| 45 | AS140317 | CHINATELECOM-GUANGDONG-SHAOGUAN-5G-NETWORK CHINATELECOM Guangdong province Shaoguan 5G network, CN | 813,568个 | 19700101 |
| 46 | AS140330 | CHINATELECOM-FUJIAN-XIAMEN-5G-NETWORK CHINATELECOM Fujian province Xiamen 5G network, CN | 792,320个 | 19700101 |
| 47 | AS17962 | TOPWAY-NET ShenZhen Topway Video Communication Co. Ltd, CN | 770,048个 | 20010925 |
| 48 | AS56047 | CMNET-HUNAN-AP China Mobile communications corporation, CN | 766,720个 | 19700101 |
| 49 | AS4835 | CHINANET-IDC-SN China Telecom Group, CN | 750,592个 | 20010913 |
| 50 | AS58879 | ANCHNET Shanghai Anchang Network Security Technology Co.,Ltd., CN | 707,840个 | 20130322 |
| 51 | AS55990 | HWCSNET Huawei Cloud Service data center, CN | 674,048个 | 19700101 |
| 52 | AS9806 | BJENET Beijing Educational Information Network Service Center Co., Ltd, CN | 655,360个 | 19700101 |
| 53 | AS24547 | CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN | 654,336个 | 20060124 |
| 54 | AS17964 | DXTNET Beijing Dian-Xin-Tong Network Technologies Co., Ltd., CN | 643,072个 | 19700101 |
| 55 | AS56042 | CMNET-SHANXI-AP China Mobile communications corporation, CN | 598,272个 | 19700101 |
| 56 | AS17623 | CNCGROUP-SZ China Unicom Shenzen network, CN | 583,168个 | 19700101 |
| 57 | AS136198 | CHINANET-GUANGDONG-YUEXI-MAN CHINANET Guangdong province Yuexi MAN network, CN | 576,768个 | 19700101 |
| 58 | AS140312 | CHINATELECOM-GUANGDONG-ZHANJIANG-5G-NETWORK CHINATELECOM Guangdong province Zhanjiang 5G network, CN | 554,752个 | 19700101 |
| 59 | AS136199 | CHINANET-GUANGDONG-YUEDONG-MAN CHINANET Guangdong province Yuedong MAN network, CN | 552,192个 | 19700101 |
| 60 | AS140061 | CHINANET-QINGHAI-AS-AP Qinghai Telecom, CN | 516,608个 | 19700101 |
| 61 | AS58466 | CT-GUANGZHOU-IDC CHINANET Guangdong province network, CN | 513,024个 | 20111208 |
| 62 | AS136800 | XIAOZHIYUN1-AS-AP ICIDC NETWORK, US | 503,552个 | 19700101 |
| 63 | AS45587 | CBCNET-CERNET-AS-AP China Broadband Communications CBCnet, CN | 459,776个 | 20081229 |
| 64 | AS17799 | CHINATELECOM-LN-AS-AP asn for Liaoning Provincial Net of CT, CN | 452,608个 | 20021118 |
| 65 | AS140313 | CHINATELECOM-GUANGDONG-ZHAOQING-5G-NETWORK CHINATELECOM Guangdong province Zhaoqing 5G network, CN | 449,792个 | 19700101 |
| 66 | AS132525 | CMNET-HEILONGJIANG-CN HeiLongJiang Mobile Communication Company Limited, CN | 431,104个 | 20121212 |
| 67 | AS38019 | CMNET-V4TIANJIN-AS-AP tianjin Mobile Communication Company Limited, CN | 422,144个 | 20060517 |
| 68 | AS9814 | FIBRLINK Beijing FibrLINK Networks Co.,Ltd., CN | 417,792个 | 19700101 |
| 69 | AS4799 | CHINA169-JT CNCGROUP Jitong IP network, CN | 414,464个 | 19960104 |
| 70 | AS140308 | CHINATELECOM-GUANGDONG-ZHUHAI-5G-NETWORK CHINATELECOM Guangdong province Zhuhai 5G network, CN | 410,368个 | 19700101 |
| 71 | AS38365 | BAIDU Beijing Baidu Netcom Science and Technology Co., Ltd., CN | 410,112个 | 19700101 |
| 72 | AS133731 | TOINTER-AS-AP Xinyuan Interconnect HK Limited, CN | 408,064个 | 20140919 |
| 73 | AS9389 | UNSPECIFIED BEIJING SHENZHOU GREATWALL COMMUNICATION, CN | 401,408个 | 19700101 |
| 74 | AS140316 | CHINATELECOM-GUANGDONG-CHAOZHOU-5G-NETWORK CHINATELECOM Guangdong province Chaozhou 5G network, CN | 395,008个 | 19700101 |
| 75 | AS139646 | HKMTC-AS-AP HONG KONG Megalayer Technology Co.,Limited, HK | 394,240个 | 19700101 |
| 76 | AS23650 | CHINANET-JIANGSU-PROVINCE-IDC AS Number for CHINANET jiangsu province backbone, CN | 382,720个 | 20030214 |
| 77 | AS134775 | CHINANET-GUANGDONG-ZHUSANJIAO-MAN CHINANET Guangdong province Zhusanjiao MAN network, CN | 376,832个 | 19700101 |
| 78 | AS55960 | BJ-GUANGHUAN-AP Beijing Guanghuan Xinwang Digital, CN | 360,448个 | 19700101 |
| 79 | AS4816 | CHINANET-IDC-GD China Telecom Group, CN | 346,112个 | 19700101 |
| 80 | AS18245 | FOUNDERBN CNNIC, CN | 334,848个 | 19700101 |
| 81 | AS38341 | CNNIC-HCENET-AP HEXIE Information technology Co., Ltd., CN | 332,032个 | 19700101 |
| 82 | AS45120 | CMNET3-AS-AP China Mobile communications corporation, CN | 327,680个 | 20080227 |
| 83 | AS45069 | CNNIC-CTTSDNET-AP china tietong Shandong net, CN | 324,608个 | 19700101 |
| 84 | AS58543 | CHINATELECOM-GUANGDONG-IDC Guangdong, CN | 312,064个 | 19700101 |
| 85 | AS37981 | TYIS-AS-AP TOYO Internet Service Co., Ltd., JP | 310,784个 | 20060317 |
| 86 | AS24422 | CNNIC-HTXX Huatong information network, CN | 294,912个 | 19700101 |
| 87 | AS140903 | CHINANET-HEBEI-BAODING-MAN CHINA TELECOM, CN | 291,328个 | 19700101 |
| 88 | AS23844 | BJ-GUANGHUAN-AP Beijing Guanghuan Xinwang Digital, CN | 289,024个 | 19700101 |
| 89 | AS9803 | JINGXUN Beijing Jingxun Public Information Technology Co., Ltd, CN | 282,624个 | 19700101 |
| 90 | AS4811 | CHINANET-SHANGHAI-MAN China Telecom Group, CN | 279,040个 | 19990512 |
| 91 | AS135629 | WESTCLOUDDATA Ningxia West Cloud Data Technology Co.Ltd., CN | 273,920个 | 19700101 |
| 92 | AS4813 | BACKBONE-GUANGDONG-AP China TelecomGroup, CN | 268,288个 | 19700101 |
| 93 | AS63711 | CTTNET China TieTong Telecommunications Corporation, CN | 266,752个 | 19700101 |
| 94 | AS45057 | CNNIC-TIETONG-AP CHINA TIETONG SHANGHAI, CN | 265,984个 | 19700101 |
| 95 | AS58542 | CHINATELECOM-TIANJIN Tianjij,300000, CN | 265,984个 | 19700101 |
| 96 | AS17429 | BGCTVNET BEIJING GEHUA CATV NETWORK CO.LTD, CN | 262,144个 | 19700101 |
| 97 | AS45062 | NETEASE-AS Guangzhou NetEase Computer System Co., Ltd., CN | 254,720个 | 19700101 |
| 98 | AS38372 | CNNIC-RJNET-AP FoShan RuiJiang Science and Tech Ltd., CN | 248,576个 | 19700101 |
| 99 | AS38283 | CHINANET-SCIDC-AS-AP CHINANET SiChuan Telecom Internet Data Center, CN | 247,808个 | 20061114 |
| 100 | AS37940 | ETRUNKNET etrunk network telecommunication co. ltd, CN | 236,544个 | 19700101 |
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