AS4721

JCOM Co., Ltd.

AS 4721 JCN JCOM Co., Ltd.

Autonomous Systems are networks typically governed by large ISPs that participate in global Internet routing. Each network is assigned a unique identification number known as the AS number or ASN by the Internet Assigned Numbers Authority.

1,263,616 IP addresses
ASN4721
NameJCN JCOM Co., Ltd.
OrganizationJCOM Co., Ltd.
CountryJapan  
RegistryAPNIC
IPv4 addresses1,263,616
IPv6 /64 networks232
Prefixes163
Other ASN allocated to JCOM Co., Ltd.
ASN Name IP addresses
9824 JTCL-JP-AS 10,315,776
9617 ZAQ JCOM Co., Ltd. 2,326,528
9378 CABLENET JCOM Co., Ltd. 90,112
18136 CTA JCOM Co., Ltd. 86,016
18134 KITANET JCOM Co., Ltd. 59,392
23788 HICT JCOM Co., Ltd. 49,152
24276 ICNET JCOM Co., Ltd. 40,960
23790 KCN-TV JCOM Co., Ltd. 18,432
7686 ATNETHOME JCOM Co., Ltd. 8,192
45675 KMN-TOKYO JCOM Co., Ltd. 8,192
IPv4 Prefixes for AS4721 - showing the first 20 of 162 networks
Network Location Addresses
110.173.240.0/20 Jcom   Chiyoda 4,096
110.173.240.0/21 Jcom   Chiyoda 2,048
110.173.248.0/21 JCOM Co., Ltd.   Chiyoda 2,048
110.232.0.0/19 JCOM Co., Ltd.   Chiyoda 8,192
110.232.0.0/20 JCOM Co., Ltd.   Chiyoda 4,096
110.232.128.0/21 JCOM Co., Ltd.   Kamiōi 2,048
110.232.128.0/22 JCOM Co., Ltd.   Kamiōi 1,024
110.232.132.0/22 JCOM Co., Ltd.   Chiyoda City 1,024
110.232.16.0/20 JCOM Co., Ltd.   Chiyoda 4,096
110.4.48.0/20 JCOM Co., Ltd.   Chiyoda 4,096
110.4.48.0/21 JCOM Co., Ltd.   Chiyoda 2,048
110.4.56.0/21 JCOM Co., Ltd.   Chiyoda 2,048
110.92.80.0/20 Jcom   Chiyoda 4,096
110.92.80.0/21 Jcom   Chiyoda 2,048
110.92.88.0/21 Jcom   Chiyoda 2,048
110.93.0.0/21 JCOM Co., Ltd.   Chiyoda City 2,048
110.93.0.0/22 JCOM Co., Ltd.   Chiyoda City 1,024
110.93.4.0/22 JCOM Co., Ltd.   Chiyoda City 1,024
111.90.0.0/17 Jcom   Chiyoda 32,768
111.90.0.0/18 Jcom   Chiyoda 16,384
IPv6 Prefixes for AS4721
Network Location /64 Prefixes
2001:c30::/32 Jcn   Chiyoda City 232