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AS4721

JCN

JCOM Co., Ltd.

Registry

Authoritative registration data

AS number
4721
Name
JCN
Organisation
JCOM Co., Ltd.
Country
Flag of Japan JP Japan
RIR
APNIC
Registered
—
Source:asn:rdap retrieved

IPv4 prefixes

162

IPv6 prefixes

1

Total announced

163

Announced prefixes

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

Prefixes announced by AS4721
118.86.0.0/15 IPv4 /15 RPKI valid
118.83.0.0/16 IPv4 /16 RPKI valid
118.86.0.0/16 IPv4 /16 not checked
118.87.0.0/16 IPv4 /16 not checked
14.193.0.0/16 IPv4 /16 RPKI valid
111.90.0.0/17 IPv4 /17 not checked
118.83.0.0/17 IPv4 /17 not checked
118.83.128.0/17 IPv4 /17 not checked
122.255.128.0/17 IPv4 /17 RPKI valid
14.193.0.0/17 IPv4 /17 RPKI valid
14.193.128.0/17 IPv4 /17 not checked
111.90.0.0/18 IPv4 /18 RPKI valid
111.90.64.0/18 IPv4 /18 RPKI valid
112.137.64.0/18 IPv4 /18 not checked
114.134.192.0/18 IPv4 /18 not checked
116.70.128.0/18 IPv4 /18 RPKI valid
122.255.128.0/18 IPv4 /18 not checked
122.255.192.0/18 IPv4 /18 RPKI valid
175.41.64.0/18 IPv4 /18 not checked
220.208.64.0/18 IPv4 /18 not checked
221.132.128.0/18 IPv4 /18 not checked
110.232.0.0/19 IPv4 /19 RPKI valid
112.137.64.0/19 IPv4 /19 not checked
112.137.96.0/19 IPv4 /19 RPKI valid
114.134.192.0/19 IPv4 /19 RPKI valid
114.134.224.0/19 IPv4 /19 RPKI valid
114.198.192.0/19 IPv4 /19 RPKI valid
116.70.128.0/19 IPv4 /19 RPKI valid
116.70.160.0/19 IPv4 /19 RPKI valid
123.98.224.0/19 IPv4 /19 RPKI valid
175.41.64.0/19 IPv4 /19 RPKI valid
175.41.96.0/19 IPv4 /19 RPKI valid
180.149.160.0/19 IPv4 /19 not checked
180.92.32.0/19 IPv4 /19 RPKI valid
182.50.192.0/19 IPv4 /19 RPKI valid
203.124.64.0/19 IPv4 /19 RPKI valid
203.89.32.0/19 IPv4 /19 not checked
210.135.192.0/19 IPv4 /19 not checked
219.112.192.0/19 IPv4 /19 RPKI valid
219.117.160.0/19 IPv4 /19 not checked
219.124.224.0/19 IPv4 /19 RPKI valid
220.208.64.0/19 IPv4 /19 RPKI valid
220.208.96.0/19 IPv4 /19 RPKI valid
221.132.128.0/19 IPv4 /19 not checked
221.132.160.0/19 IPv4 /19 not checked
223.165.32.0/19 IPv4 /19 not checked
61.203.224.0/19 IPv4 /19 not checked
110.173.240.0/20 IPv4 /20 RPKI valid
110.232.0.0/20 IPv4 /20 not checked
110.232.16.0/20 IPv4 /20 RPKI valid
110.4.48.0/20 IPv4 /20 RPKI valid
110.92.80.0/20 IPv4 /20 RPKI valid
112.137.32.0/20 IPv4 /20 RPKI valid
113.52.16.0/20 IPv4 /20 not checked
113.61.112.0/20 IPv4 /20 RPKI valid
114.134.112.0/20 IPv4 /20 RPKI valid
114.198.192.0/20 IPv4 /20 RPKI valid
114.198.208.0/20 IPv4 /20 not checked
115.42.96.0/20 IPv4 /20 not checked
123.98.224.0/20 IPv4 /20 RPKI valid
123.98.240.0/20 IPv4 /20 not checked
180.149.160.0/20 IPv4 /20 RPKI valid
180.149.176.0/20 IPv4 /20 not checked
180.92.32.0/20 IPv4 /20 RPKI valid
180.92.48.0/20 IPv4 /20 RPKI valid
182.50.192.0/20 IPv4 /20 not checked
182.50.208.0/20 IPv4 /20 not checked
182.50.224.0/20 IPv4 /20 RPKI valid
202.178.80.0/20 IPv4 /20 RPKI valid
202.43.16.0/20 IPv4 /20 not checked
202.72.64.0/20 IPv4 /20 RPKI valid
202.78.176.0/20 IPv4 /20 RPKI valid
203.124.64.0/20 IPv4 /20 RPKI valid
203.124.80.0/20 IPv4 /20 RPKI valid
203.89.32.0/20 IPv4 /20 RPKI valid
203.89.48.0/20 IPv4 /20 RPKI valid
210.135.192.0/20 IPv4 /20 not checked
210.135.208.0/20 IPv4 /20 not checked
210.172.240.0/20 IPv4 /20 RPKI valid
211.19.208.0/20 IPv4 /20 not checked
218.219.80.0/20 IPv4 /20 RPKI valid
219.112.192.0/20 IPv4 /20 RPKI valid
219.112.208.0/20 IPv4 /20 not checked
219.113.96.0/20 IPv4 /20 not checked
219.117.0.0/20 IPv4 /20 not checked
219.117.160.0/20 IPv4 /20 RPKI valid
219.117.176.0/20 IPv4 /20 not checked
219.124.224.0/20 IPv4 /20 not checked
219.124.240.0/20 IPv4 /20 RPKI valid
223.165.32.0/20 IPv4 /20 RPKI valid
223.165.48.0/20 IPv4 /20 RPKI valid
61.203.224.0/20 IPv4 /20 not checked
61.203.240.0/20 IPv4 /20 RPKI valid
110.173.240.0/21 IPv4 /21 not checked
110.173.248.0/21 IPv4 /21 not checked
110.232.128.0/21 IPv4 /21 not checked
110.4.48.0/21 IPv4 /21 RPKI valid
110.4.56.0/21 IPv4 /21 not checked
110.92.80.0/21 IPv4 /21 RPKI valid
110.92.88.0/21 IPv4 /21 not checked
110.93.0.0/21 IPv4 /21 not checked
112.137.32.0/21 IPv4 /21 not checked
112.137.40.0/21 IPv4 /21 RPKI valid
113.52.16.0/21 IPv4 /21 not checked
113.52.24.0/21 IPv4 /21 RPKI valid
113.61.112.0/21 IPv4 /21 not checked
113.61.120.0/21 IPv4 /21 RPKI valid
114.134.112.0/21 IPv4 /21 RPKI valid
114.134.120.0/21 IPv4 /21 RPKI valid
114.142.128.0/21 IPv4 /21 RPKI valid
114.198.224.0/21 IPv4 /21 RPKI valid
115.42.104.0/21 IPv4 /21 not checked
115.42.96.0/21 IPv4 /21 RPKI valid
182.50.224.0/21 IPv4 /21 not checked
182.50.232.0/21 IPv4 /21 not checked
202.178.80.0/21 IPv4 /21 RPKI valid
202.178.88.0/21 IPv4 /21 RPKI valid
202.43.16.0/21 IPv4 /21 RPKI valid
202.43.24.0/21 IPv4 /21 RPKI valid
202.72.64.0/21 IPv4 /21 not checked
202.72.72.0/21 IPv4 /21 RPKI valid
202.78.176.0/21 IPv4 /21 RPKI valid
202.78.184.0/21 IPv4 /21 not checked
202.83.184.0/21 IPv4 /21 RPKI valid
210.172.240.0/21 IPv4 /21 not checked
210.172.248.0/21 IPv4 /21 not checked
211.19.208.0/21 IPv4 /21 not checked
211.19.216.0/21 IPv4 /21 not checked
218.219.80.0/21 IPv4 /21 not checked
218.219.88.0/21 IPv4 /21 RPKI valid
219.113.104.0/21 IPv4 /21 RPKI valid
219.113.96.0/21 IPv4 /21 RPKI valid
219.117.0.0/21 IPv4 /21 not checked
219.117.8.0/21 IPv4 /21 RPKI valid
223.223.208.0/21 IPv4 /21 RPKI valid
110.232.128.0/22 IPv4 /22 RPKI valid
110.232.132.0/22 IPv4 /22 not checked
110.93.0.0/22 IPv4 /22 RPKI valid
110.93.4.0/22 IPv4 /22 not checked
114.142.128.0/22 IPv4 /22 not checked
114.142.132.0/22 IPv4 /22 RPKI valid
114.198.224.0/22 IPv4 /22 RPKI valid
114.198.228.0/22 IPv4 /22 not checked
175.103.12.0/22 IPv4 /22 not checked
202.43.68.0/22 IPv4 /22 not checked
202.83.184.0/22 IPv4 /22 not checked
202.83.188.0/22 IPv4 /22 not checked
203.114.248.0/22 IPv4 /22 not checked
203.153.56.0/22 IPv4 /22 RPKI valid
223.165.20.0/22 IPv4 /22 not checked
223.223.208.0/22 IPv4 /22 RPKI valid
223.223.212.0/22 IPv4 /22 RPKI valid
175.103.12.0/23 IPv4 /23 RPKI valid
175.103.14.0/23 IPv4 /23 RPKI valid
202.43.68.0/23 IPv4 /23 not checked
202.43.70.0/23 IPv4 /23 not checked
203.114.248.0/23 IPv4 /23 not checked
203.114.250.0/23 IPv4 /23 RPKI valid
203.153.56.0/23 IPv4 /23 RPKI valid
203.153.58.0/23 IPv4 /23 RPKI valid
223.165.20.0/23 IPv4 /23 not checked
223.165.22.0/23 IPv4 /23 not checked
2001:c30::/32 IPv6 /32 RPKI valid

No rows match “”.

Showing – of

Source:ripestat:announced-prefixes observed

Internet Exchanges

Exchanges where this network has a listed peering LAN connection

No Internet Exchange memberships found

The exchange directory has no current membership records for this AS.

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 AS4721 in BGP paths by route collectors.

Source:ripestat:asn-neighbours observed

Observed upstreams

1 networks seen before AS4721 in AS paths

Observed upstreams
Families
AS9824 JTCL-JP-AS 458 27,353
v4 v6

No rows match “”.

Showing – of

Observed downstreams

0 networks seen after AS4721 in AS paths

No downstreams observed

This AS was not seen carrying traffic towards another network.

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.