日本

按 RIR 注册登记在日本的 ASN，IPv4 地址数量全球第 3 位。

ASN: 1,306; 占全球 1.0%
有路由的 ASN: 744; 占本国 57.0%
IPv4 地址: 1.62 亿; 占全球 4.7%
IPv6 /48: 5.13 亿; 占全球 4.2%

路由数据 · 2026.10.19 18:21 UTC

网络类型构成按 ASN 数量

日本的尚未分类查看全部类型

排名	ASN	名称	IPv4 地址	IPv6 /48	前缀
1	AS9617	JCOM Co., Ltd.	1,163,264	65,536	118
2	AS4721	JCOM Co., Ltd.	631,808	65,536	163
3	AS18071	Panasonic Information Systems Co., Ltd	383,232	0	50
4	AS131932	JR East Information Systems Company	327,680	0	71
5	AS18144	Enecom,Inc.	291,840	524,288	23
6	AS2522	Japan Network Information Center	229,120	0	15
7	AS2506	NTT WEST CHUGOKU CORPORATION	214,272	65,536	16
8	AS2501	UTnet	200,704	65,536	6
9	AS9619	Sony Global Solutions Inc.	200,704	65,536	13
10	AS4686	Bekkoame Internet Inc.	200,448	65,536	66
11	AS23793	National Institute of Advanced Industrial Science and Technology	199,936	0	16
12	AS17698	COMMUNITY NETWORK CENTER INCORPORATED.	174,080	0	37
13	AS9614	OCT	165,888	0	25
14	AS17529	STARCAT Co .,LTD.	135,424	65,536	14
15	AS2504	Kyoto University	132,096	0	4
16	AS37917	University of Tsukuba	132,096	0	3
17	AS7509	Hokkaido University	131,328	0	3
18	AS17687	National University Corporation Nagoya University	131,328	0	3
19	AS38635	Keio University	131,072	2	4
20	AS4729	Japan Atomic Energy Agency	131,072	0	2
21	AS3488	Japan Aerospace Exploration Agency	115,200	0	9
22	AS59108	KATCH NETWORK INC.	96,256	4,352	47
23	AS9466	UUNET Japan Limited	84,224	512	23
24	AS55374	FUJITSU LIMITED	74,240	4	124
25	AS2505	High Energy Accelerator Research Organization, KEK	74,240	0	4
26	AS58647	Kagawa University	73,728	0	185
27	AS23781	Toyama University	72,704	0	4
28	AS17947	SAKURA KCS	69,632	0	2
29	AS18271	Sojitz Tech Innovation Co., Ltd.	69,632	0	6
30	AS37918	NTT, Inc.	69,376	1	22
31	AS4730	Osaka University	67,584	0	2
32	AS23720	Rakuten Mobile Network, Inc.	66,560	65,536	4
33	AS24261	Mie University	66,304	0	3
34	AS131158	Nara Institute of Science and Technology, National University Corporation	66,048	1	3
35	AS17932	Japan Advanced Institute of Science and Technology	65,792	1	3
36	AS17944	Japan Weather Association	65,792	1	6
37	AS9367	Institute of Science Tokyo	65,536	65,536	3
38	AS9991	Hiroshima Shudo University	65,536	1	2
39	AS10014	Nihon University	65,536	1	2
40	AS17701	Seinan Gakuin University	65,536	1	4
41	AS18087	Toyo University	65,536	1	5
42	AS18124	Okayama University of Science	65,536	1	11
43	AS37919	SEGA	65,536	1	3
44	AS55379	Hosei University	65,536	1	4
45	AS55390	Tokyo University of Science	65,536	1	4
46	AS55904	KOGAKUIN University	65,536	1	4
47	AS58785	Tohoku Gakuin University	65,536	1	2
48	AS2508	kyushu-u	65,536	0	1
49	AS2513	Japan Science and Technology Agency	65,536	0	1
50	AS2526	Hitachi, Ltd. IT strategy & Digital Integration Division, Employee Experience Office	65,536	0	9