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AS4693

CSK

CSK-IT MANAGEMENT CORPORATION

Registry

Authoritative registration data

AS number
4693
Name
CSK
Organisation
CSK-IT MANAGEMENT CORPORATION
Country
Flag of Japan JP Japan
RIR
APNIC
Registered
—
Source:asn:rdap retrieved

IPv4 prefixes

7

IPv6 prefixes

1

Total announced

8

Announced prefixes

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

Prefixes announced by AS4693
203.140.0.0/19 IPv4 /19 not checked
203.179.32.0/19 IPv4 /19 RPKI not found
210.159.96.0/19 IPv4 /19 RPKI not found
210.166.96.0/19 IPv4 /19 RPKI not found
210.249.192.0/19 IPv4 /19 not checked
211.7.192.0/21 IPv4 /21 RPKI not found
211.7.208.0/21 IPv4 /21 not checked
2400:af80::/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 AS4693
Address families
BBIX Tokyo 10,000 Mbps IPv4 · IPv6
JPIX TOKYO 10,000 Mbps IPv4 · IPv6
JPNAP Tokyo: Peering 10,000 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 AS4693 in BGP paths by route collectors.

Source:ripestat:asn-neighbours observed

Observed upstreams

8 networks seen before AS4693 in AS paths

Observed upstreams
Families
AS17686 ACCELIA 324 1,155
v4 v6
AS17676 GIGAINFRA 223 1,097
v4 v6
AS6939 HURRICANE 45 209
v4
AS8220 COLT 12 75
v4 v6
AS20485 TRANSTELECOM 5 35
v4
AS8966 Etisalat-AS 6 27
v4
AS9002 RETN-AS 3 12
v4 v6
AS2516 KDDI 1 2
v4

No rows match “”.

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Observed downstreams

1 networks seen after AS4693 in AS paths

Observed downstreams
Families
AS17680 SCS 233 548
v4

No rows match “”.

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Uncertain adjacencies

11 adjacencies that may be an artefact of collector peering

Uncertain adjacencies
Families
AS24482 SGGS-AS-AP 2 64
v4 v6
AS2500 WIDE-BB 2 10
v4 v6
AS18106 VIEWQWEST-SG-AP 2 10
v4 v6
AS35280 F5 2 10
v4 v6
AS49544 i3Dnet 2 10
v4 v6
AS4777 APNIC-COLO 1 8
v4 v6
AS17639 CONVERGE-AS 1 8
v4 v6
AS36236 NETACTUATE 1 8
v4 v6
AS45489 SLT-GLOBAL 1 8
v4 v6
AS59105 HOMENOC 1 8
v4 v6
AS25152 K-ROOT-SERVER 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.