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	Prefix	Description
	27.136.0.0/13	JCOM Co., Ltd.
	27.136.0.0/17	JCOM Co., Ltd.
	27.136.128.0/17	JCOM Co., Ltd.
	27.137.0.0/16	JCOM Co., Ltd.
	27.138.0.0/16	JCOM Co., Ltd.
	27.139.0.0/16	JCOM Co., Ltd.
	27.140.0.0/16	JCOM Co., Ltd.
	27.141.0.0/16	JCOM Co., Ltd.
	27.142.0.0/17	JCOM Co., Ltd.
	27.142.128.0/17	JCOM Co., Ltd.
	27.143.0.0/16	JCOM Co., Ltd.
	42.144.0.0/16	JCOM Co., Ltd.
	42.144.0.0/13	JCOM Co., Ltd.
	42.145.0.0/16	JCOM Co., Ltd.
	42.146.0.0/16	JCOM Co., Ltd.
	42.147.0.0/16	JCOM Co., Ltd.
	42.148.0.0/16	JCOM Co., Ltd.
	42.149.0.0/16	JCOM Co., Ltd.
	42.150.0.0/18	JCOM Co., Ltd.
	42.150.0.0/16	JCOM Co., Ltd.
	42.150.64.0/18	JCOM Co., Ltd.
	42.150.128.0/18	JCOM Co., Ltd.
	42.150.192.0/18	JCOM Co., Ltd.
	42.151.0.0/16	JCOM Co., Ltd.
	59.166.0.0/16	JCOM Co., Ltd.
	59.166.0.0/17	JCOM Co., Ltd.
	59.166.128.0/17	JCOM Co., Ltd.
	59.168.0.0/17	JCOM Co., Ltd.
	59.168.0.0/16	JCOM Co., Ltd.
	59.168.128.0/17	JCOM Co., Ltd.
	59.169.0.0/18	JCOM Co., Ltd.
	59.169.0.0/16	JCOM Co., Ltd.
	59.169.64.0/18	JCOM Co., Ltd.
	59.169.128.0/17	JCOM Co., Ltd.
	59.170.0.0/17	JCOM Co., Ltd.
	59.170.0.0/16	JCOM Co., Ltd.
	59.170.0.0/18	JCOM Co., Ltd.
	59.170.64.0/18	JCOM Co., Ltd.
	59.170.128.0/17	JCOM Co., Ltd.
	59.170.128.0/18	JCOM Co., Ltd.
	59.170.192.0/18	JCOM Co., Ltd.
	59.171.0.0/17	JCOM Co., Ltd.
	59.171.0.0/16	JCOM Co., Ltd.
	59.171.128.0/17	JCOM Co., Ltd.
	60.58.0.0/17	JCOM Co., Ltd.
	60.58.0.0/16	JCOM Co., Ltd.
	60.58.128.0/17	JCOM Co., Ltd.
	60.59.0.0/16	JCOM Co., Ltd.
	60.59.0.0/17	JCOM Co., Ltd.
	60.59.128.0/17	JCOM Co., Ltd.
	60.60.0.0/16	JCOM Co., Ltd.
	60.60.0.0/17	JCOM Co., Ltd.
	60.60.128.0/17	JCOM Co., Ltd.
	60.61.0.0/16	JCOM Co., Ltd.
	60.61.0.0/17	JCOM Co., Ltd.
	60.61.128.0/17	JCOM Co., Ltd.
	60.62.0.0/16	JCOM Co., Ltd.
	60.62.0.0/17	JCOM Co., Ltd.
	60.62.128.0/17	JCOM Co., Ltd.
	61.21.0.0/17	JCOM Co., Ltd.
	61.21.0.0/16	JCOM Co., Ltd.
	61.21.128.0/17	JCOM Co., Ltd.
	61.22.0.0/17	JCOM Co., Ltd.
	61.22.0.0/18	JCOM Co., Ltd.
	61.22.0.0/16	JCOM Co., Ltd.
	61.22.64.0/18	JCOM Co., Ltd.
	61.22.128.0/17	JCOM Co., Ltd.
	61.22.128.0/18	JCOM Co., Ltd.
	61.22.192.0/18	JCOM Co., Ltd.
	61.23.0.0/16	JCOM Co., Ltd.
	61.23.0.0/17	JCOM Co., Ltd.
	61.23.128.0/17	JCOM Co., Ltd.
	61.24.0.0/16	JCOM Co., Ltd.
	61.24.0.0/17	JCOM Co., Ltd.
	61.24.128.0/17	JCOM Co., Ltd.
	61.25.0.0/17	JCOM Co., Ltd.
	61.25.0.0/16	JCOM Co., Ltd.
	61.25.128.0/17	JCOM Co., Ltd.
	61.26.0.0/16	JCOM Co., Ltd.
	61.26.0.0/17	JCOM Co., Ltd.
	61.26.128.0/17	JCOM Co., Ltd.
	61.27.0.0/17	JCOM Co., Ltd.
	61.27.0.0/16	JCOM Co., Ltd.
	61.27.128.0/17	JCOM Co., Ltd.
	61.27.192.0/18	JCOM Co., Ltd.
	110.128.0.0/13	JCOM Co., Ltd.
	110.128.0.0/16	JCOM Co., Ltd.
	110.129.0.0/16	JCOM Co., Ltd.
	110.129.128.0/18	JCOM Co., Ltd.
	110.129.192.0/18	JCOM Co., Ltd.
	110.130.0.0/16	JCOM Co., Ltd.
	110.131.0.0/16	JCOM Co., Ltd.
	110.132.0.0/16	JCOM Co., Ltd.
	110.133.0.0/17	JCOM Co., Ltd.
	110.133.128.0/17	JCOM Co., Ltd.
	110.134.0.0/18	JCOM Co., Ltd.
	110.134.0.0/16	JCOM Co., Ltd.
	110.134.64.0/18	JCOM Co., Ltd.
	110.135.0.0/16	JCOM Co., Ltd.
	110.135.128.0/18	JCOM Co., Ltd.
	110.135.192.0/18	JCOM Co., Ltd.
	116.64.0.0/17	JCOM Co., Ltd.
	116.64.0.0/16	JCOM Co., Ltd.
	116.64.128.0/17	JCOM Co., Ltd.
	116.65.0.0/17	JCOM Co., Ltd.
	116.65.0.0/16	JCOM Co., Ltd.
	116.65.128.0/17	JCOM Co., Ltd.
	116.214.16.0/21	JCOM Co., Ltd.
	116.220.0.0/16	JCOM Co., Ltd.
	116.220.0.0/17	JCOM Co., Ltd.
	116.220.128.0/17	JCOM Co., Ltd.
	116.221.0.0/17	JCOM Co., Ltd.
	116.221.0.0/16	JCOM Co., Ltd.
	116.221.128.0/17	JCOM Co., Ltd.
	116.222.0.0/18	JCOM Co., Ltd.
	116.222.0.0/17	JCOM Co., Ltd.
	116.222.0.0/16	JCOM Co., Ltd.
	116.222.64.0/18	JCOM Co., Ltd.
	116.222.128.0/17	JCOM Co., Ltd.
	116.222.128.0/18	JCOM Co., Ltd.
	116.222.192.0/18	JCOM Co., Ltd.
	116.223.0.0/17	JCOM Co., Ltd.
	116.223.0.0/16	JCOM Co., Ltd.
	116.223.128.0/17	JCOM Co., Ltd.
	119.168.0.0/16	JCOM Co., Ltd.
	119.168.0.0/17	JCOM Co., Ltd.
	119.168.128.0/17	JCOM Co., Ltd.
	119.169.0.0/18	JCOM Co., Ltd.
	119.169.0.0/16	JCOM Co., Ltd.
	119.169.64.0/18	JCOM Co., Ltd.
	119.169.128.0/18	JCOM Co., Ltd.
	119.169.128.0/17	JCOM Co., Ltd.
	119.170.0.0/16	JCOM Co., Ltd.
	119.170.0.0/17	JCOM Co., Ltd.
	119.170.0.0/18	JCOM Co., Ltd.
	119.170.64.0/18	JCOM Co., Ltd.
	119.170.128.0/18	JCOM Co., Ltd.
	119.170.128.0/17	JCOM Co., Ltd.
	119.170.192.0/18	JCOM Co., Ltd.
	119.171.0.0/16	JCOM Co., Ltd.
	119.171.0.0/17	JCOM Co., Ltd.
	119.171.128.0/17	JCOM Co., Ltd.
	119.172.0.0/16	JCOM Co., Ltd.
	119.172.0.0/18	JCOM Co., Ltd.
	119.172.0.0/17	JCOM Co., Ltd.
	119.172.128.0/17	JCOM Co., Ltd.
	119.173.0.0/16	JCOM Co., Ltd.
	119.173.0.0/17	JCOM Co., Ltd.
	119.173.128.0/17	JCOM Co., Ltd.
	119.174.0.0/16	JCOM Co., Ltd.
	119.174.0.0/17	JCOM Co., Ltd.
	119.174.128.0/17	JCOM Co., Ltd.
	119.174.128.0/18	JCOM Co., Ltd.
	119.175.0.0/16	JCOM Co., Ltd.
	119.175.0.0/17	JCOM Co., Ltd.
	119.175.0.0/18	JCOM Co., Ltd.
	119.175.64.0/18	JCOM Co., Ltd.
	119.175.128.0/17	JCOM Co., Ltd.
	124.140.0.0/16	JCOM Co., Ltd.
	124.140.0.0/17	JCOM Co., Ltd.
	124.140.128.0/17	JCOM Co., Ltd.
	124.141.0.0/16	JCOM Co., Ltd.
	124.141.0.0/17	JCOM Co., Ltd.
	124.141.128.0/17	JCOM Co., Ltd.
	124.142.0.0/17	JCOM Co., Ltd.
	124.142.0.0/16	JCOM Co., Ltd.
	124.142.128.0/17	JCOM Co., Ltd.
	124.143.0.0/16	JCOM Co., Ltd.
	124.143.0.0/17	JCOM Co., Ltd.
	124.143.128.0/17	JCOM Co., Ltd.
	124.144.0.0/16	JCOM Co., Ltd.
	124.144.0.0/17	JCOM Co., Ltd.
	124.144.128.0/17	JCOM Co., Ltd.
	124.145.0.0/16	JCOM Co., Ltd.
	124.145.0.0/17	JCOM Co., Ltd.
	124.145.0.0/18	JCOM Co., Ltd.
	124.145.64.0/18	JCOM Co., Ltd.
	124.145.128.0/17	JCOM Co., Ltd.
	124.145.128.0/18	JCOM Co., Ltd.
	124.145.192.0/18	JCOM Co., Ltd.
	125.8.0.0/17	JCOM Co., Ltd.
	125.8.0.0/18	JCOM Co., Ltd.
	125.8.0.0/16	JCOM Co., Ltd.
	125.8.64.0/18	JCOM Co., Ltd.
	125.8.128.0/17	JCOM Co., Ltd.
	125.8.128.0/18	JCOM Co., Ltd.
	125.8.192.0/18	JCOM Co., Ltd.
	125.9.0.0/16	JCOM Co., Ltd.
	125.9.0.0/17	JCOM Co., Ltd.
	125.9.0.0/18	JCOM Co., Ltd.
	125.9.64.0/18	JCOM Co., Ltd.
	125.9.128.0/17	JCOM Co., Ltd.
	125.9.128.0/18	JCOM Co., Ltd.
	125.9.192.0/18	JCOM Co., Ltd.
	125.10.0.0/16	JCOM Co., Ltd.
	125.10.0.0/17	JCOM Co., Ltd.
	125.10.128.0/17	JCOM Co., Ltd.
	125.11.0.0/18	JCOM Co., Ltd.
	125.11.0.0/17	JCOM Co., Ltd.
	125.11.0.0/16	JCOM Co., Ltd.
	125.11.64.0/18	JCOM Co., Ltd.
	125.11.128.0/18	JCOM Co., Ltd.
	125.11.128.0/17	JCOM Co., Ltd.
	125.11.192.0/18	JCOM Co., Ltd.
	125.12.0.0/16	JCOM Co., Ltd.
	125.12.0.0/17	JCOM Co., Ltd.
	125.12.128.0/17	JCOM Co., Ltd.
	125.13.0.0/16	JCOM Co., Ltd.
	125.13.0.0/18	JCOM Co., Ltd.
	125.13.0.0/17	JCOM Co., Ltd.
	125.13.64.0/18	JCOM Co., Ltd.
	125.13.128.0/18	JCOM Co., Ltd.
	125.13.128.0/17	JCOM Co., Ltd.
	125.13.192.0/18	JCOM Co., Ltd.
	125.14.0.0/17	JCOM Co., Ltd.
	125.14.0.0/16	JCOM Co., Ltd.
	125.14.128.0/17	JCOM Co., Ltd.
	125.15.0.0/17	JCOM Co., Ltd.
	125.15.0.0/16	JCOM Co., Ltd.
	125.15.128.0/17	JCOM Co., Ltd.
	203.165.0.0/16
	203.165.0.0/17	JCOM Co., Ltd.
	203.165.128.0/17	JCOM Co., Ltd.
	210.20.0.0/17	JCOM Co., Ltd.
	210.20.0.0/16
	210.20.128.0/17	JCOM Co., Ltd.
	210.194.0.0/17	JCOM Co., Ltd.
	210.194.0.0/16	JCOM Co., Ltd.
	210.194.128.0/17	JCOM Co., Ltd.
	220.152.0.0/18	JCOM Co., Ltd.
	220.152.64.0/19	JCOM Co., Ltd.
	2001:ff0::/32	JCOM Co., Ltd.
	2001:ff0::/37	JCOM Co., Ltd.
	2001:ff0:800::/37	JCOM Co., Ltd.
	2001:ff0:1000::/37	JCOM Co., Ltd.
	2001:ff0:1800::/37	JCOM Co., Ltd.
	2001:ff0:2000::/37	JCOM Co., Ltd.
	2001:ff0:2800::/37	JCOM Co., Ltd.
	2001:ff0:3000::/37	JCOM Co., Ltd.
	2001:ff0:3800::/37	JCOM Co., Ltd.
	2001:ff0:4000::/37	JCOM Co., Ltd.
	2001:ff0:4800::/37	JCOM Co., Ltd.
	2001:ff0:5000::/37	JCOM Co., Ltd.
	2001:ff0:5800::/37	JCOM Co., Ltd.
	2001:ff0:6000::/37	JCOM Co., Ltd.
	2001:ff0:6800::/37	JCOM Co., Ltd.
	2001:ff0:7000::/37	JCOM Co., Ltd.
	2001:ff0:7800::/37	JCOM Co., Ltd.
	2001:ff0:8000::/37	JCOM Co., Ltd.
	2001:ff0:8800::/37	JCOM Co., Ltd.
	2001:ff0:9000::/37	JCOM Co., Ltd.
	2001:ff0:9800::/37	JCOM Co., Ltd.
	2001:ff0:a000::/37	JCOM Co., Ltd.
	2001:ff0:a800::/37	JCOM Co., Ltd.
	2001:ff0:b000::/37	JCOM Co., Ltd.
	2001:ff0:b800::/37	JCOM Co., Ltd.
	2001:ff0:c000::/37	JCOM Co., Ltd.
	2001:ff0:c800::/37	JCOM Co., Ltd.
	2001:ff0:d000::/37	JCOM Co., Ltd.
	2001:ff0:d800::/37	JCOM Co., Ltd.
	2001:ff0:e000::/37	JCOM Co., Ltd.
	2001:ff0:e800::/37	JCOM Co., Ltd.
	2001:ff0:f000::/37	JCOM Co., Ltd.
	2001:ff0:f800::/37	JCOM Co., Ltd.
	2405:1200::/34	JCOM Co., Ltd.
	2405:1200::/29
	2405:1200:4000::/34	JCOM Co., Ltd.
	2405:1200:8000::/34	JCOM Co., Ltd.
	2405:1200:c000::/34	JCOM Co., Ltd.
	2405:1201::/34	JCOM Co., Ltd.
	2405:1201:4000::/34	JCOM Co., Ltd.
	2405:1201:8000::/34	JCOM Co., Ltd.
	2405:1201:c000::/34	JCOM Co., Ltd.
	2405:1202::/34	JCOM Co., Ltd.
	2405:1202:4000::/34	JCOM Co., Ltd.
	2405:1202:8000::/34	JCOM Co., Ltd.
	2405:1202:c000::/34	JCOM Co., Ltd.
	2405:1203::/34	JCOM Co., Ltd.
	2405:1203:4000::/34	JCOM Co., Ltd.
	2405:1203:8000::/34	JCOM Co., Ltd.
	2405:1203:c000::/34	JCOM Co., Ltd.
	2405:1204::/34	JCOM Co., Ltd.
	2405:1204:4000::/34	JCOM Co., Ltd.
	2405:1204:8000::/34	JCOM Co., Ltd.
	2405:1204:c000::/34	JCOM Co., Ltd.
	2405:1205::/34	JCOM Co., Ltd.
	2405:1205:4000::/34	JCOM Co., Ltd.
	2405:1205:8000::/34	JCOM Co., Ltd.
	2405:1205:c000::/34	JCOM Co., Ltd.
	2405:1206::/34	JCOM Co., Ltd.
	2405:1206:4000::/34	JCOM Co., Ltd.
	2405:1206:8000::/34	JCOM Co., Ltd.
	2405:1206:c000::/34	JCOM Co., Ltd.

---

Network Policy

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Prefixes in selected policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS2516	KDDI Corporation	✔	✔
	AS2497	Internet Initiative Japan Inc.	✔	✔
	AS1299	Arelion (fka. Telia Carrier)	✔	✔
	AS174	Cogent Communications, LLC	✔	✘

---

Peers

	ASN	Description	IPv4	IPv6
	AS2516	KDDI Corporation	✔	✔
	AS2497	Internet Initiative Japan Inc.	✔	✔
	AS4721	JCOM Co., Ltd.	✔	✔
	AS9617	JCOM Co., Ltd.	✔	✔
	AS6939	Hurricane Electric LLC	✔	✘
	AS1299	Arelion (fka. Telia Carrier)	✔	✔
	AS9378	JCOM Co., Ltd.	✔	✘
	AS9614	Oita Cable Telecom Co,ltd.	✔	✘
	AS18134	JCOM Co., Ltd.	✔	✘
	AS23788	JCOM Co., Ltd.	✔	✘
	AS18136	JCOM Co., Ltd.	✔	✘
	AS137409	GSL Networks Pty LTD	✔	✔
	AS18283	Chupicom Inc.	✔	✘
	AS24276	JCOM Co., Ltd.	✔	✘
	AS150369	TelHi Corporation	✔	✔
	AS8220	COLT	✔	✔
	AS23808	TOSHIMA CABLE NETWORK CO.,LTD	✔	✘
	AS13335	Cloudflare, Inc.	✔	✔
	AS20473	The Constant Company, LLC	✔	✔
	AS7524	ITEC HANKYU HANSHIN CO.,LTD.	✔	✔
	AS2635	Automattic, Inc	✔	✔
	AS45675	JCOM Co., Ltd.	✔	✘
	AS9002	RETN Limited	✔	✔
	AS60068	Datacamp Limited (CDN77 / DataPacket)	✔	✔
	AS23635	CRCCMedia Co.,ltd	✔	✘
	AS23790	JCOM Co., Ltd.	✔	✘
	AS7686	JCOM Co., Ltd.	✔	✘
	AS199524	Gcore S.A.	✔	✔
	AS138997	Eons Data Communications Limited	✔	✔
	AS30058	FDCservers.net	✔	✔
	AS24290	Heart Network Co.,LTD	✔	✘
	AS45690	Nihon Central TV Co.,Inc.	✔	✘
	AS17961	mitene internet co., ltd.	✔	✔
	AS2907	Science Information Network	✔	✔
	AS174	Cogent Communications, LLC	✔	✘
	AS9607	BroadBand Tower, Inc.	✔	✔
	AS2518	BIGLOBE Inc.	✔	✔
	AS49544	i3D.net B.V	✔	✔
	AS2515	Japan Network Information Center	✔	✘
	AS10010	TOKAI Communications Corporation	✔	✘
	AS215724	Edgevana, Inc.	✔	✘
	AS17534	NSK Co.,Ltd.	✔	✔
	AS16276	OVH SAS	✔	✔
	AS32590	Valve Corporation	✔	✔
	AS55900	GLBB Japan KK	✔	✔
	AS9370	SAKURA Internet Inc.	✔	✘
	AS24255	Koshinomiyako Network, Inc.	✔	✔
	AS9351	ZTV CO.,LTD	✔	✔
	AS10013	FreeBit Co.,Ltd.	✔	✘
	AS9371	SAKURA Internet Inc.	✔	✘
	AS2514	NTT PC Communications, Inc.	✔	✘

---

Downstreams

	ASN	Description	IPv4	IPv6
	AS4721	JCOM Co., Ltd.	✔	✔
	AS9617	JCOM Co., Ltd.	✔	✔
	AS9378	JCOM Co., Ltd.	✔	✘
	AS9614	Oita Cable Telecom Co,ltd.	✔	✘
	AS18134	JCOM Co., Ltd.	✔	✘
	AS23788	JCOM Co., Ltd.	✔	✘
	AS18136	JCOM Co., Ltd.	✔	✘
	AS18283	Chupicom Inc.	✔	✘
	AS24276	JCOM Co., Ltd.	✔	✘
	AS23808	TOSHIMA CABLE NETWORK CO.,LTD	✔	✘
	AS45675	JCOM Co., Ltd.	✔	✘
	AS7524	ITEC HANKYU HANSHIN CO.,LTD.	✔	✘
	AS23635	CRCCMedia Co.,ltd	✔	✘
	AS7686	JCOM Co., Ltd.	✔	✘
	AS23790	JCOM Co., Ltd.	✔	✘
	AS24290	Heart Network Co.,LTD	✔	✘
	AS45690	Nihon Central TV Co.,Inc.	✔	✘
	AS17961	mitene internet co., ltd.	✔	✔
	AS24255	Koshinomiyako Network, Inc.	✔	✘
	AS17534	NSK Co.,Ltd.	✔	✔
	AS9351	ZTV CO.,LTD	✘	✔

aut-num:        AS9824
as-name:        JTCL-JP-AS
descr:          JCOM Co., Ltd.
country:        JP
org:            ORG-JTCL1-AP
admin-c:        JTCL2-AP
tech-c:         JTCL2-AP
abuse-c:        AJ428-AP
mnt-lower:      MAINT-JTCL-JP
mnt-routes:     MAINT-JTCL-JP
mnt-by:         APNIC-HM
mnt-irt:        IRT-JTCL-JP
last-modified:  2021-10-18T23:16:54Z
source:         APNIC


organisation:   ORG-JTCL1-AP
org-name:       JCOM Co., Ltd.
org-type:       LIR
country:        JP
address:        ********
address:        ********
phone:          ********
fax-no:         ********
# Email removed, Log into bgp.tools to see whois emails/phone numbers
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:16:29Z
source:         APNIC

Last Update: 2026-05-07T03:22:26Z UTC

---

Member of the following AS-SETs

-	Member	ASN Count
LEVEL3	as-level3-origins-na	0
RADB	as-iij	5136
RADB	as-telstra-intl-customers-4637	1599
JPIRR	as-iij	5136
RADB	as-pacnet-customer-proxy-register	1171
JPIRR	as-iij6	4489
RADB	as-nspixp2	69
RADB	as-iij6	4489
RADB	as-9824transit	126
RADB	as-kddi6	832
NTTCOM	as-ixp2	62
RADB	as-9824transit6	93
ARIN	as-xo-b	58831
RADB	as-hurricanev6	20839
RADB	as-kdd	1155