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	Prefix	Description
	103.215.84.0/22	Global Network Core Co.,Ltd.
	117.102.168.0/21	Global Network Core Co.,Ltd.
	210.158.160.0/20	Global Network Core Co.,Ltd.
	218.223.32.0/20	Global Network Core Co.,Ltd.
	221.120.168.0/21	Global Network Core Co.,Ltd.
	2400:e000::/32	Japan Network Information Center

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS2518	BIGLOBE Inc.	✔	✔
	AS2914	NTT America, Inc.	✔	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS2518	BIGLOBE Inc.	✔	✔
	AS2914	NTT America, Inc.	✔	✔
	AS23631	Sofu System, Inc	✔	✔
	AS55895	N.S.Computer Service Co.,Ltd.	✔	✔
	AS38652	Ginzado Co.,Ltd.	✔	✔
	AS6939	Hurricane Electric LLC	✔	✘
	AS137409	GSL Networks Pty LTD	✔	✔
	AS59105	Home NOC Operators Group	✔	✔
	AS20473	The Constant Company, LLC	✔	✔
	AS2907	Science Information Network	✔	✔
	AS58453	China Mobile International	✘	✔
	AS199524	Gcore S.A.	✔	✔
	AS1828	PacketFabric / Unitas Global	✔	✔
	AS8849	Melbikomas UAB	✔	✔
	AS49544	i3D.net B.V	✔	✔
	AS2635	Automattic, Inc	✔	✔
	AS2515	Japan Network Information Center	✔	✔
	AS9607	BroadBand Tower, Inc.	✔	✘
	AS140627	OneQode	✔	✘
	AS36236	NetActuate, Inc	✔	✔
	AS101	University of Washington	✔	✔
	AS24482	SG.GS	✔	✔
	AS32590	Valve Corporation	✔	✔
	AS138121	PT Mora Telematika Indonesia Tbk	✔	✘
	AS38001	NewMedia Express Pte. Ltd.	✔	✘
	AS137367	PT iForte Solusi Infotek	✔	✘
	AS45701	PT Internet Madju Abad Milenindo	✔	✘
	AS55685	PT Jala Lintas Media	✔	✘
	AS38158	PT Cyberindo Aditama	✔	✘

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Downstreams

	ASN	Description	IPv4	IPv6
	AS23631	Sofu System, Inc	✔	✔
	AS55895	N.S.Computer Service Co.,Ltd.	✔	✔
	AS38652	Ginzado Co.,Ltd.	✔	✔

[ 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]                  18070
b. [AS Name]                    NDAC
g. [Organization]               Global Network Core Co.,Ltd.
m. [Administrative Contact]     JP00028011
n. [Technical Contact]          JP00028011
q. [Abuse]                      
o. [IMPORT]                     from AS2510 100 accept ANY
o. [IMPORT]                     from AS2516 100 accept ANY
o. [IMPORT]                     from AS4725 100 accept ANY
p. [EXPORT]                     to AS2510 announce AS18070
p. [EXPORT]                     to AS2516 announce AS18070
p. [EXPORT]                     to AS4725 announce AS18070
[Assigned Date]                 2002/01/11
[Last Update]                   2008/04/08 10:56:14(JST)

Last Update: 2026-06-05T03:43:42Z UTC

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Member of the following AS-SETs

-	Member
RADB	as-mesh-customer:as18070
RADB	as-iij
NTTCOM	as-exchange
RADB	as-ocn-v6
JPIRR	as-iij6
NTTCOM	as-ocn
JPIRR	as2497:as-iij6
JPIRR	as-ocn-v6
RADB	as-ocn
RADB	as-18070
RADB	as-hurricanev6
RADB	as-kdd
JPIRR	as2497:as-iij
LEVEL3	as-level3-origins-na
JPIRR	as-iij
RADB	as2497:as-iij6
JPIRR	as-mesh-customer:as18070
RADB	as-kddi6
NTTCOM	as-ocn-v6
JPIRR	as-exchange
RADB	as-iij6
NTTCOM	as-18070
RADB	as-pacnet
RADB	as2497:as-iij
JPIRR	as-ocn
JPIRR	as-18070
RADB	as-anc