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AS23641

NSCS-NET

NS Computer Service Corporation

Registry

Authoritative registration data

AS number
23641
Name
NSCS-NET
Organisation
NS Computer Service Corporation
Country
Flag of Japan JP Japan
RIR
APNIC
Registered
—
Source:asn:rdap retrieved

IPv4 prefixes

2

IPv6 prefixes

1

Total announced

3

Announced prefixes

Observed in BGP by route collectors, not a registry allocation list

Prefixes announced by AS23641
211.19.16.0/20 IPv4 /20 not checked
203.86.224.0/21 IPv4 /21 not checked
2403:9200::/32 IPv6 /32 RPKI not found

No rows match “”.

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Source:ripestat:announced-prefixes observed

Internet Exchanges

Exchanges where this network has a listed peering LAN connection

Internet Exchange memberships listed for AS23641
Address families
BBIX Tokyo 1,000 Mbps IPv4 · IPv6
Echigo-IX 1,000 Mbps IPv4 · IPv6

No rows match “”.

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Source:peeringdb retrieved

Exchange membership means the network has a listed connection; it does not prove peering with other members.

Observed adjacencies

Networks seen next to AS23641 in BGP paths by route collectors.

Source:ripestat:asn-neighbours observed

Observed upstreams

5 networks seen before AS23641 in AS paths

Observed upstreams
Families
AS2914 NTT-DATA-2914 329 942
v4 v6
AS24482 SGGS-AS-AP 2 34
v4 v6
AS9002 RETN-AS 3 7
v4 v6
AS9304 HUTCHISON-AS-AP 2 4
v4
AS9498 BBIL-AP 1 2
v4

No rows match “”.

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Observed downstreams

0 networks seen after AS23641 in AS paths

No downstreams observed

This AS was not seen carrying traffic towards another network.

Uncertain adjacencies

5 adjacencies that may be an artefact of collector peering

Uncertain adjacencies
Families
AS2500 WIDE-BB 1 3
v4 v6
AS18106 VIEWQWEST-SG-AP 1 3
v4 v6
AS59105 HOMENOC 1 3
v4 v6
AS49544 i3Dnet 1 2
v4
AS35280 F5 1 1
v6

No rows match “”.

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Note:
These are observed adjacencies derived from BGP path data, not confirmed commercial relationships. A network appearing before another in an AS path does not establish that it is a paying transit customer, a settlement free peer, or anything else contractual. Adjacencies marked uncertain were seen only as direct peers of a route collector, so the collector's own peering may have created them.