View

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
	202.244.32.0/22	Chiba University of Commerce
	202.244.32.0/21	Chiba University of Commerce
	202.244.36.0/22	Chiba University of Commerce

---

Network Policy

Click here to learn more about what this graph means and what makes up a network policy Global Aggregation Policy elegant_boyd Policy serene_goldstine

Chart Display Options

Display links using non straight lines

Prefixes in selected policy

Load all prefixes in policy

---

How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS2500	WIDE Project	✔	✘
	AS2907	Science Information Network	✔	✘

---

Peers

	ASN	Description	IPv4	IPv6
	AS2500	WIDE Project	✔	✘
	AS2907	Science Information Network	✔	✘

[ 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]                  63783
b. [AS Name]                    CUC
g. [Organization]               Chiba University of Commerce
m. [Administrative Contact]     JP00189327
n. [Technical Contact]          JP00189327
q. [Abuse]                      
o. [IMPORT]                     
p. [EXPORT]                     
[Assigned Date]                 2020/03/06
[Last Update]                   2020/03/06 13:09:45(JST)

Last Update: 2026-06-05T04:23:51Z UTC

---

Member of the following AS-SETs

-	Member	ASN Count
ARIN	as293:as-from-singaren-to-esnet	4548
JPIRR	as-iij6	4546
JPIRR	as-cuc-asset	1
RADB	as2497:as-iij	5197
RADB	as-iij6	4546
JPIRR	as-bbix-t-v6	738
RADB	as-iij	5201
RADB	as2500:as-transit	25
RADB	as-bbix-t-v6	738
RADB	as-bbix-t	935
JPIRR	as-bbix-t	935
RADB	as-wide	52
JPIRR	as2497:as-iij	5197
JPIRR	as2907:as-sinet	150
JPIRR	as2497:as-iij6	4543
RADB	as2497:as-iij6	4543
JPIRR	as-iij	5201
RIPE	as20965:as-from-tein-to-geant	656