AS4721
AS Name: JCN
Description: J:COM (former JCN)
Registry: RADB
Imports from (1)
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
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
Prefixes (163) →
View all IPv4 and IPv6 prefixes originated by AS4721
Hostnames in AS4721
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-LOCIX(76,072 ASNs)
AS-BRYCE-PEERS-AMS(76,072 ASNs)
AS213234:AS-HBC-PEERINGS(76,073 ASNs)
AS-BRYCE-PEERS(76,078 ASNs)
AS-UBNIX-V6(76,129 ASNs)
AS-MIROHOST-V6-A(76,129 ASNs)
AS-MSKROUTESERVER(76,136 ASNs)
AS43921:AS-VRMSKIX(76,136 ASNs)
AS-PITER-IX-HEL(76,138 ASNs)
... and 106 more