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	Prefix	Description
	202.223.12.0/23	Joetsu Cable Vision Co.,Ltd.
	202.223.12.0/22	Joetsu Cable Vision Co.,Ltd.
	202.223.14.0/23	Joetsu Cable Vision Co.,Ltd.
	103.118.92.0/23	Joetsu Cable Vision Co.,Ltd.
	103.118.92.0/22	Joetsu Cable Vision Co.,Ltd.
	103.118.93.0/24	Joetsu Cable Vision Co.,Ltd.
	103.118.94.0/23	Joetsu Cable Vision Co.,Ltd.
	103.152.66.0/24	JMiX Co., Ltd.
	103.152.67.0/24	JMiX Co., Ltd.
	126.251.0.0/19	Joetsu Cable Vision Co.,Ltd.
	126.251.0.0/20	Joetsu Cable Vision Co.,Ltd.
	126.251.16.0/20	Joetsu Cable Vision Co.,Ltd.
	126.251.32.0/22	Joetsu Cable Vision Co.,Ltd.
	126.251.32.0/21	Joetsu Cable Vision Co.,Ltd.
	126.251.36.0/22	Joetsu Cable Vision Co.,Ltd.
	126.251.112.0/21	SoftBank Corp.
	126.251.112.0/22	SoftBank Corp.
	126.251.116.0/22	SoftBank Corp.
	126.251.128.0/21	SoftBank Corp.
	126.251.128.0/20	SoftBank Corp.
	126.251.136.0/21	SoftBank Corp.
	170.249.64.0/22	Joetsu Cable Vision Co.,Ltd.
	170.249.64.0/21	Joetsu Cable Vision Co.,Ltd.
	170.249.68.0/22	Joetsu Cable Vision Co.,Ltd.
	170.249.96.0/19	Joetsu Cable Vision Co.,Ltd.
	170.249.96.0/20	Joetsu Cable Vision Co.,Ltd.
	170.249.112.0/20	Joetsu Cable Vision Co.,Ltd.
	2403:4040::/32	Japan Network Information Center
	2403:4040::/48	Joetsu Cable Vision Co.,Ltd.
	2403:4040:1::/48	Joetsu Cable Vision Co.,Ltd.
	2403:4040:2::/48	Joetsu Cable Vision Co.,Ltd.
	2406:2b40::/32	Japan Network Infomation Center

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS17676	SoftBank Corp.	✔	✔
	AS2497	Internet Initiative Japan Inc.	✔	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS17676	SoftBank Corp.	✔	✔
	AS2497	Internet Initiative Japan Inc.	✔	✔
	AS6939	Hurricane Electric LLC	✔	✔
	AS150369	TelHi Corporation	✔	✔
	AS20473	The Constant Company, LLC	✔	✔
	AS9002	RETN Limited	✔	✔
	AS2907	Science Information Network	✔	✔
	AS59105	Home NOC Operators Group	✔	✔
	AS216211	CYBERVERSE LLC	✔	✔
	AS4651	The Communications Authority of Thailand (CAT)	✔	✔
	AS8966	Etisalat (ETC)	✔	✘
	AS2635	Automattic, Inc	✔	✔
	AS9371	SAKURA Internet Inc.	✔	✔
	AS9507	NextHop Pty Ltd	✔	✔
	AS1828	Unitas Global	✔	✔
	AS20485	TransTeleCom JSC	✔	✘
	AS2515	Japan Network Information Center	✔	✔
	AS63774	Kamoike.net LLP	✔	✔
	AS9370	SAKURA Internet Inc.	✔	✔
	AS49544	i3D.net B.V	✔	✔
	AS60068	Datacamp Limited (CDN77 / DataPacket)	✔	✘
	AS15169	Google LLC	✔	✔
	AS24482	SG.GS	✔	✔
	AS138997	Eons Data Communications Limited	✔	✔
	AS32590	Valve Corporation	✔	✔
	AS3786	LG DACOM Corporation	✔	✘
	AS153371	BACK WAVES LIMITED	✔	✔
	AS9304	HGC Global Communications Limited	✔	✘
	AS35280	F5 Networks SARL	✔	✘
	AS140627	OneQode	✔	✘
	AS18526	DDPS Networks, LLC	✔	✔
	AS8849	Melbikomas UAB	✔	✔
	AS23815	Japan Internet Xing Co., Ltd.	✔	✘
	AS17686	ACCELIA	✔	✔
	AS9299	PLDT (Philippine Long Distance Telephone Company)	✔	✘
	AS55685	PT Jala Lintas Media	✔	✘
	AS23640	BBIX,Inc.	✔	✘
	AS7671	NTT SmartConnect Corporation	✔	✘
	AS20326	TeraSwitch Networks Inc.	✘	✔
	AS134835	Starry Network Limited	✘	✔

[ JPNIC database provides information regarding IP address and ASN. Its use   ]
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[ use 'whois -h whois.nic.ad.jp help'. To only display English output,        ]
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Autonomous System Information:
a. [AS Number]                  131937
b. [AS Name]                    JCV
g. [Organization]               Joetsu Cable Vision
m. [Administrative Contact]     JP00164408
n. [Technical Contact]          JP00164408
q. [Abuse]                      
o. [IMPORT]                     from AS23640 100 accept ANY
o. [IMPORT]                     from AS17676 100 accept ANY
p. [EXPORT]                     to AS23640 announce AS131937
p. [EXPORT]                     to AS17676 announce AS131937
[Assigned Date]                 2018/07/25
[Last Update]                   2018/07/25 13:59:26(JST)

Last Update: 2025-07-26T23:10:32Z UTC / (Click here to force a refresh)

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-gigainfra-v6	850
JPIRR	as-iij6	4736
JPIRR	as-jcv	1
RADB	as-iij	5365
JPIRR	as-gigainfra-v6	850
JPIRR	as-iij	5365
ARIN	as1239:as-customers	4238
RADB	as-iij6	4736
JPIRR	as-gigainfra	1283
RADB	as-gigainfra	1283