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	Prefix	Description
	27.253.128.0/17	Japan Communications Inc.
	223.25.128.0/18	Japan Communications Inc.

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS2497	Internet Initiative Japan Inc.	✔	✘
	AS17676	SoftBank Corp.	✔	✘
	AS10010	TOKAI Communications Corporation	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS2497	Internet Initiative Japan Inc.	✔	✘
	AS10010	TOKAI Communications Corporation	✔	✘
	AS17676	SoftBank Corp.	✔	✘
	AS6939	Hurricane Electric LLC	✔	✘
	AS150369	TelHi Corporation	✔	✘
	AS20473	The Constant Company, LLC	✔	✘
	AS9002	RETN Limited	✔	✘
	AS199524	Gcore S.A.	✔	✘
	AS9507	NextHop Pty Ltd	✔	✘
	AS1828	Unitas Global	✔	✘
	AS138997	Eons Data Communications Limited	✔	✘
	AS63774	Kamoike.net LLP	✔	✘
	AS216211	CYBERVERSE LLC	✔	✘
	AS4651	The Communications Authority of Thailand (CAT)	✔	✘
	AS2907	Science Information Network	✔	✘
	AS2635	Automattic, Inc	✔	✘
	AS49544	i3D.net B.V	✔	✘
	AS3786	LG DACOM Corporation	✔	✘
	AS24482	SG.GS	✔	✘
	AS32590	Valve Corporation	✔	✘

[ 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]                  55387
b. [AS Name]                    RMGR-MIX
g. [Organization]               Japan Communication Inc.
m. [Administrative Contact]     SN3309JP
n. [Technical Contact]          SN3309JP
q. [Abuse]                      
o. [IMPORT]                     from AS10010 100 accept ANY
o. [IMPORT]                     from AS2497 100 accept ANY
p. [EXPORT]                     to AS10010 announce AS55387
p. [EXPORT]                     to AS2497 announce AS55387
[Assigned Date]                 2010/09/10
[Last Update]                   2013/04/10 13:29:04(JST)

Last Update: 2025-12-14T22:45:07Z UTC / (Click here to force a refresh)

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Member of the following AS-SETs

-	Member
JPIRR	as-tokai
NTTCOM	as-infosphere
RADB	as-iij
RADB	as-gigainfra
RADB	as-kdd
RADB	as-tokai
JPIRR	as-gigainfra
JPIRR	as-iij6
ARIN	as-xo-b
JPIRR	as-bbix-t
RADB	as-kddi6
RADB	as-telstra-intl-customers-4637
JPIRR	as-iij
JPIRR	as-infosphere-v6
RADB	as3491:as-customers-ap
RADB	as-mesh-customer:as10010
NTTCOM	as-infosphere-v6
RADB	as-pacnet-customer-proxy-register
JPIRR	as-mesh-customer:as10010
NTTCOM	as-bbx-peers
RADB	as-iij6
RADB	as-telstra-testing-1
JPIRR	as2915:as-bbix-ocx-customers
JPIRR	as-infosphere
JPIRR	as-bbx-peers
RADB	as-bbix-t
RADB	as-telstra-intl-customers