AS4721 — JCN
AS Name: JCN
Description: J:COM (former JCN)
Registry: RADB
Imports from (1)
⚠️ CIRCL BGP Security Rank: 0.0003% (position 14210)
aut-num: AS4721
as-name: JCN
descr: J:COM (former JCN)
member-of: AS-JCN
import: from AS-ANY accept ANY AND NOT {0.0.0.0/0}
export: to AS-ANY announce AS-JCN AND NOT {0.0.0.0/0}
admin-c: AS4721 Network Operations
tech-c: AS4721 Network Operations
notify: noc@as4721.net
mnt-by: MAINT-AS9824
changed: radb-notify@jupiter.jcom.co.jp 20150303
source: RADB
last-modified: 2023-11-13T15:47:20Z
Direct Membership
Macros that directly list AS4721 as a member:
AS-9824TRANSIT(39 members)
AS-9824TRANSIT6(39 members)
AS-PACNET(198 members)
AS-ANC(200 members)
AS-VECTANT(225 members)
AS-TMNET-PEERS(271 members)
AS-KDDI6(833 members)
AS-IIJ6(898 members)
AS-KDD(1151 members)
AS-IIJ(1639 members)
AS1239:AS-CUSTOMERS(4238 members)
AS-HURRICANEV6(20402 members)
Expanded Membership
All macros containing AS4721 (directly or via nested macros): 206
Show 100 macros
AS-9824TRANSIT6(86 ASNs)
AS-9824TRANSIT(123 ASNs)
AS-VECTANT(225 ASNs)
AS-TMNET-PEERS(271 ASNs)
AS-KDDI6(833 ASNs)
AS-KDD(1,151 ASNs)
AS-KDDCUSTOMER(1,151 ASNs)
AS-IIJ6(2,528 ASNs)
AS-IIJ(3,162 ASNs)
AS1239:AS-CUSTOMERS(4,238 ASNs)
AS-PACNET(4,289 ASNs)
AS-ANC(4,335 ASNs)
AS-KDDTRANSIT(11,930 ASNs)
AS-SEABONECUSTAS(19,767 ASNs)
AS-HURRICANEV6(20,402 ASNs)
AS-SEECIX-V6(20,691 ASNs)
AS56858:AS-SEECIX-V6(20,691 ASNs)
AS-DECIX-RIC-V6(20,721 ASNs)
AS393752:AS-DECIX-RIC-V6(20,721 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-TIX(21,568 ASNs)
AS-LITIX-V6(22,027 ASNs)
AS-T-CIX-V6(22,807 ASNs)
AS-XO(23,361 ASNs)
AS-BALT-IX-V6(23,949 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-CIXP(24,509 ASNs)
AS-FIXO-V6(25,776 ASNs)
AS-DECIX-BCN-V6(28,476 ASNs)
AS57802:AS-DECIX-BCN-V6(28,476 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-SWISS-IX(28,564 ASNs)
AS-DECIX-ORD-V6(31,479 ASNs)
AS62760:AS-DECIX-ORD-V6(31,479 ASNs)
AS-DECIX-LIS-V6(32,541 ASNs)
AS43729:AS-DECIX-LIS-V6(32,541 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-EQUINIX-PA(34,681 ASNs)
AS-MONIX-PEERS(37,180 ASNs)
AS-TAHOEIX-MEMBERS(37,370 ASNs)
AS-MBIX-RS-MEMBERS(37,425 ASNs)
AS-ONIX(37,766 ASNs)
AS211776:AS-CRAFTBYTE-UPSTREAMS(37,882 ASNs)
AS-VSIX-RS(38,411 ASNs)
AS207800:AS-RTIX-SET(39,194 ASNs)
AS33495:AS-MEMBERS(39,231 ASNs)
AS-DECIX-DFW-V6(40,077 ASNs)
AS62499:AS-DECIX-DFW-V6(40,077 ASNs)
AS-LUCIX-RS(40,498 ASNs)
AS7606:AS-QLD-IX(40,666 ASNs)
AS7606:AS-WA-IX(40,872 ASNs)
AS-SONIX(41,963 ASNs)
AS-VANIX-RS-PARTICIPANTS(42,555 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-FRANCE-IX-MARSEILLE(44,422 ASNs)
AS-ECIX-BER(45,114 ASNs)
AS-ECIX-HAM(46,249 ASNs)
AS7606:AS-NSW-IX(46,591 ASNs)
AS7606:AS-ALL(47,090 ASNs)
AS-ECIX-MUC(48,469 ASNs)
AS-ECIX-DUS(48,854 ASNs)
AS2914:AS-US-V6(52,836 ASNs)
AS2914:AS-US(53,991 ASNs)
AS-NIXSK-RSCLIENTS(55,989 ASNs)
AS47627:AS-NIXSK-RSCLIENTS(56,033 ASNs)
AS-BIX-V6(56,058 ASNs)
AS-TOPIX-RS(57,252 ASNs)
AS3491:AS-CUSTOMERS-AP(58,474 ASNs)
AS-PLIX6(60,222 ASNs)
AS-CAIS(61,483 ASNs)
AS-HKIX(64,663 ASNs)
AS-TELIANETASIA(65,174 ASNs)
AS1299:AS-TWELVE99-AP-V4(65,174 ASNs)
AS-TELIANETASIA-V6(66,784 ASNs)
AS1299:AS-TWELVE99-AP-V6(66,784 ASNs)
AS-SEABONE(71,409 ASNs)
AS-UAEIX-V6(71,954 ASNs)
AS61374:AS-UAEIX-V6(71,954 ASNs)
AS-SIXSK-SETS-V6(71,982 ASNs)
AS-DECIX-PMO-V6(72,294 ASNs)
AS25083:AS-DECIX-PMO-V6(72,294 ASNs)
AS-DECIX-PMO(72,297 ASNs)
AS25083:AS-DECIX-PMO(72,297 ASNs)
AS2914:AS-EUROPE-V6(73,647 ASNs)
AS-EBONE(73,672 ASNs)
AS-ST1-UPSTREAMS(73,733 ASNs)
AS-DECIX-IST-V6(73,807 ASNs)
AS20715:AS-DECIX-IST-V6(73,807 ASNs)
AS-DECIX-IST(73,942 ASNs)
AS20715:AS-DECIX-IST(73,942 ASNs)
AS-VERIO-EUROPE(74,186 ASNs)
AS2914:AS-EUROPE(74,186 ASNs)
AS-BALCANIX(74,900 ASNs)
AS6881:AS-NIXCZ-CLIENTS(75,302 ASNs)
AS-NIXCZ-CLIENTS(75,315 ASNs)
AS-SIX6(76,016 ASNs)
AS-BRYCE-PEERS-AMS(76,072 ASNs)
AS-LOCIX(76,072 ASNs)
AS213234:AS-HBC-PEERINGS(76,073 ASNs)
AS-BRYCE-PEERS(76,078 ASNs)
AS-MIROHOST-V6-A(76,129 ASNs)
AS-UBNIX-V6(76,129 ASNs)
AS-MSKROUTESERVER(76,136 ASNs)
AS43921:AS-VRMSKIX(76,136 ASNs)
AS-PITER-IX-HEL(76,138 ASNs)
... and 106 more
Upstream AS Paths
27 unique paths, avg length 3.0
AS Looking Glass
Upstream paths (matching graph above)
All 27 Upstream Paths
Complete list of all observed paths
AS4721 IPv4 Address Subnets (162)
| 118.86.0.0/15 | 🇯🇵 JP | J:COM (former JCN) | JCN |
| 118.83.0.0/16 | 🇯🇵 JP | J:COM (former JCN) | JCN |
| 118.86.0.0/16 | 🇯🇵 JP | J:COM (former JCN) | JCN |
| 118.87.0.0/16 | 🇯🇵 JP | J:COM (former JCN) | JCN |
| 14.193.0.0/16 | 🇯🇵 JP | J:COM (former JCN) | JCN |
| 111.90.0.0/17 | 🇯🇵 JP | J:COM (former JCN) | JCN |
| 118.83.0.0/17 | 🇯🇵 JP | J:COM (former JCN) | JCN |
| 118.83.128.0/17 | 🇯🇵 JP | J:COM (former JCN) | JCN |
| 122.255.128.0/17 | 🇯🇵 JP | J:COM (former JCN) | JCN |
| 14.193.0.0/17 | 🇯🇵 JP | J:COM (former JCN) | JCN |
AS4721 IPv6 Address Subnets (1)
| 2001:c30::/32 | 🇯🇵 JP | J:COM (former JCN) | JCN |