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	Prefix	Description
	157.71.0.0/17	JR East Information Systems Company
	157.71.0.0/24	JR East Information Systems Company
	157.71.1.0/24	JR East Information Systems Company
	157.71.2.0/23	JR East Information Systems Company
	157.71.4.0/22	JR East Information Systems Company
	157.71.8.0/21	JR East Information Systems Company
	157.71.16.0/23	JR East Information Systems Company
	157.71.18.0/24	JR East Information Systems Company
	157.71.19.0/24	JR East Information Systems Company
	157.71.20.0/24	JR East Information Systems Company
	157.71.21.0/24	JR East Information Systems Company
	157.71.22.0/23	JR East Information Systems Company
	157.71.24.0/21	JR East Information Systems Company
	157.71.32.0/19	JR East Information Systems Company
	157.71.64.0/24	JR East Information Systems Company
	157.71.65.0/24	JR East Information Systems Company
	157.71.66.0/23	JR East Information Systems Company
	157.71.68.0/22	JR East Information Systems Company
	157.71.72.0/21	JR East Information Systems Company
	157.71.80.0/22	JR East Information Systems Company
	157.71.84.0/23	JR East Information Systems Company
	157.71.86.0/23	JR East Information Systems Company
	157.71.88.0/21	JR East Information Systems Company
	157.71.96.0/20	JR East Information Systems Company
	157.71.112.0/20	JR East Information Systems Company
	157.71.128.0/20	JR East Information Systems Company
	157.71.128.0/17	JR East Information Systems Company
	157.71.144.0/20	JR East Information Systems Company
	157.71.160.0/20	JR East Information Systems Company
	157.71.176.0/20	JR East Information Systems Company
	157.71.192.0/18	JR East Information Systems Company
	157.72.0.0/17	JR East Information Systems Company
	157.72.0.0/19	JR East Information Systems Company
	157.72.32.0/21	JR East Information Systems Company
	157.72.40.0/22	JR East Information Systems Company
	157.72.44.0/22	JR East Information Systems Company
	157.72.48.0/21	JR East Information Systems Company
	157.72.56.0/21	JR East Information Systems Company
	157.72.64.0/18	JR East Information Systems Company
	157.72.128.0/20	JR East Information Systems Company
	157.72.128.0/17	JR East Information Systems Company
	157.72.144.0/22	JR East Information Systems Company
	157.72.148.0/24	JR East Information Systems Company
	157.72.149.0/24	JR East Information Systems Company
	157.72.150.0/23	JR East Information Systems Company
	157.72.152.0/21	JR East Information Systems Company
	157.72.160.0/21	JR East Information Systems Company
	157.72.168.0/22	JR East Information Systems Company
	157.72.172.0/22	JR East Information Systems Company
	157.72.176.0/21	JR East Information Systems Company
	157.72.184.0/21	JR East Information Systems Company
	157.72.192.0/19	JR East Information Systems Company
	157.72.224.0/19	JR East Information Systems Company
	157.73.0.0/18	JR East Information Systems Company
	157.73.0.0/17	JR East Information Systems Company
	157.73.64.0/18	JR East Information Systems Company
	157.73.128.0/17	JR East Information Systems Company
	157.73.128.0/18	JR East Information Systems Company
	157.73.192.0/18	JR East Information Systems Company
	157.74.0.0/17	JR East Information Systems Company
	157.74.0.0/18	JR East Information Systems Company
	157.74.64.0/18	JR East Information Systems Company
	157.74.128.0/17	JR East Information Systems Company
	157.74.128.0/18	JR East Information Systems Company
	157.74.192.0/18	JR East Information Systems Company
	157.75.0.0/17	JR East Information Systems Company
	157.75.0.0/18	JR East Information Systems Company
	157.75.64.0/18	JR East Information Systems Company
	157.75.128.0/18	JR East Information Systems Company
	157.75.128.0/17	JR East Information Systems Company
	157.75.192.0/18	JR East Information Systems Company

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS2516	KDDI Corporation	✔	✘
	AS17676	SoftBank Corp.	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS2516	KDDI Corporation	✔	✘
	AS17676	SoftBank Corp.	✔	✘

[ JPNIC database provides information regarding IP address and ASN. Its use   ]
[ is restricted to network administration purposes. For further information,  ]
[ use 'whois -h whois.nic.ad.jp help'. To only display English output,        ]
[ add '/e' at the end of command, e.g. 'whois -h whois.nic.ad.jp xxx/e'.      ]

Autonomous System Information:
a. [AS Number]                  131932
b. [AS Name]                    JEIS-NET
g. [Organization]               JR East Information Systems Company
m. [Administrative Contact]     JP00057694
n. [Technical Contact]          JP00057694
q. [Abuse]                      
o. [IMPORT]                     
p. [EXPORT]                     
[Assigned Date]                 2018/04/23
[Last Update]                   2018/04/23 19:03:12(JST)

Last Update: 2025-07-09T23:43:29Z UTC / (Click here to force a refresh)

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-gigainfra	1291
JPIRR	as-gigainfra	1291
ARIN	as1239:as-customers	4238
RADB	as-kdd	1157