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If you are scraping this block for the prefixes that a AS originates, please use the data dumps in https://bgp.tools/kb/api and cache them

	Prefix	Description
	202.236.116.0/24	Akita Industrial Technology Center
	202.240.66.0/23	Akita Industrial Technology Center
	203.179.244.0/23	Cable Networks Akita Co.,Ltd.
	203.179.248.0/23	Cable Networks Akita Co.,Ltd.
	203.179.252.0/22	Cable Networks Akita Co.,Ltd.
	210.143.122.0/23	Cable Networks Akita Co.,Ltd.
	219.124.98.0/23	Cable Networks Akita Co.,Ltd.
	219.124.100.0/22	Cable Networks Akita Co.,Ltd.
	219.124.104.0/21	Cable Networks Akita Co.,Ltd.
	27.110.96.0/20	Cable Networks Akita Co.,Ltd
	27.110.112.0/21	Cable Networks Akita Co.,Ltd
	61.11.128.0/19	Cable Networks Akita Co.,Ltd.
	61.11.160.0/20	Cable Networks Akita Co.,Ltd.
	61.11.176.0/20	Cable Networks Akita Co., Ltd.
	61.11.192.0/20	Cable Networks Akita Co.,Ltd.
	103.54.204.0/22	Akita Prefecture
	193.116.32.0/19	Cable Networks Akita Co.,Ltd
	193.116.32.0/20	Cable Networks Akita Co.,Ltd.
	218.185.128.0/19	Cable Networks Akita Co.,Ltd.
	2403:5a00::/32	Japan Network Information Center
	2403:5a00:fff0::/48	Techno-Research Zone(3Institutes&1School)

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS2497	Internet Initiative Japan Inc.	✔	✔
	AS2516	KDDI Corporation	✔	✔
	AS17676	SoftBank Corp.	✔	✔
	AS2518	BIGLOBE Inc.	✔	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS2497	Internet Initiative Japan Inc.	✔	✔
	AS2516	KDDI Corporation	✔	✔
	AS18266	Datacore Works Co.,Ltd.	✔	✔
	AS6939	Hurricane Electric LLC	✔	✔
	AS2518	BIGLOBE Inc.	✔	✔
	AS131953	NPO Yutopianet	✔	✘
	AS17676	SoftBank Corp.	✔	✔
	AS20473	The Constant Company, LLC	✔	✔
	AS8220	COLT	✔	✔
	AS150369	TelHi Corporation	✔	✔
	AS59105	Home NOC Operators Group	✔	✔
	AS2635	Automattic, Inc	✔	✔
	AS9002	RETN Limited	✔	✔
	AS8966	Etisalat (ETC)	✔	✘
	AS1828	Unitas Global	✔	✔
	AS216211	CYBERVERSE LLC	✔	✔
	AS20485	TransTeleCom JSC	✔	✘
	AS9507	NextHop Pty Ltd	✔	✔
	AS4651	The Communications Authority of Thailand (CAT)	✔	✔
	AS2907	Science Information Network	✔	✔
	AS63774	Kamoike.net LLP	✔	✔
	AS2515	Japan Network Information Center	✔	✔
	AS49544	i3D.net B.V	✔	✔
	AS45701	PT Internet Madju Abad Milenindo	✔	✘
	AS60068	Datacamp Limited (CDN77 / DataPacket)	✔	✘
	AS9304	HGC Global Communications Limited	✔	✘
	AS138997	Eons Data Communications Limited	✔	✔
	AS8849	Melbikomas UAB	✔	✔
	AS24482	SG.GS	✔	✔
	AS18526	DDPS Networks, LLC	✔	✔
	AS32590	Valve Corporation	✔	✔
	AS15169	Google LLC	✔	✔
	AS101	University of Washington	✔	✔
	AS36236	NetActuate, Inc	✔	✔
	AS153371	BACK WAVES LIMITED	✔	✔
	AS55685	PT Jala Lintas Media	✔	✘
	AS9299	PLDT (Philippine Long Distance Telephone Company)	✔	✘
	AS38158	PT Cyberindo Aditama	✔	✘
	AS3786	LG DACOM Corporation	✔	✘
	AS138121	PT Mora Telematika Indonesia Tbk	✔	✘
	AS58453	China Mobile International	✘	✔
	AS9607	BroadBand Tower, Inc.	✔	✘
	AS20326	TeraSwitch Networks Inc.	✘	✔
	AS134835	Starry Network Limited	✘	✔

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Downstreams

	ASN	Description	IPv4	IPv6
	AS18266	Datacore Works Co.,Ltd.	✔	✔
	AS131953	NPO Yutopianet	✔	✘

[ 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]                  23783
b. [AS Name]                    CNA
g. [Organization]               Cable Networks Akita Co.,ltd.
m. [Administrative Contact]     JP00129211
n. [Technical Contact]          JP00129211
q. [Abuse]                      
o. [IMPORT]                     from AS4713 100 accept ANY
o. [IMPORT]                     from AS4725 100 accept ANY
p. [EXPORT]                     to AS4713 announce AS23783
p. [EXPORT]                     to AS4725 announce AS23783
[Assigned Date]                 2003/09/04
[Last Update]                   2025/05/16 14:02:03(JST)

Last Update: 2025-07-09T23:44:16Z UTC / (Click here to force a refresh)

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Member of the following AS-SETs

-	Member
ARIN	as1239:as-customers
RADB	as-kddi6
NTTCOM	as-ocn-v6
NTTCOM	as-ocn
RADB	as-iij6
JPIRR	as-cna
RADB	as-hurricanev6
RADB	as-ocn-v6
NTTCOM	as-cna
RADB	as-iij
JPIRR	as-gigainfra
RADB	as-gigainfra
JPIRR	as-gigainfra-v6
JPIRR	as-ocn
RADB	as-mesh-customer:as23783
LEVEL3	as-level3-origins-na
JPIRR	as-iij
RADB	as-ocn
JPIRR	as-iij6
RADB	as-gigainfra-v6
JPIRR	as-mesh-customer:as23783
JPIRR	as-ocn-v6
RADB	as-kdd
JPIRR	as-odn-v6
RADB	as-odn-v6