61.203.240.0/20

AS4721 · JCOM Co., Ltd.

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Summary

Country	Japan
Domain	jcom.co.jp
ASN	AS4721
Parent Range	61.203.224.0/19
Registry	JPNIC
ID	JCOM-NET

WHOIS Details

inetnum:        61.203.240.0 - 61.203.247.255
netname:        JCOM-NET
descr:          Jupiter Telecommunications Co., Ltd.
country:        JP
admin-c:        JP00006551
tech-c:         JP00006551
last-modified:  2015-11-25T04:26:11Z
remarks:        This information has been partially mirrored by APNIC from
remarks:        JPNIC. To obtain more specific information, please use the
remarks:        JPNIC WHOIS Gateway at
remarks:        http://www.nic.ad.jp/en/db/whois/en-gateway.html or
remarks:        whois.nic.ad.jp for WHOIS client. (The WHOIS client
remarks:        defaults to Japanese output, use the /e switch for English
remarks:        output)
source:         JPNIC

Overlapping Ranges

BGP prefixes that contain 61.203.240.0/20

Range	ASN	Company	Num of IPs
61.203.224.0/19	AS4721	JCOM Co., Ltd.	8,192

Nearby Ranges

BGP prefixes that overlap with 61.203.0.0/16

Range	ASN	Company	Num of IPs
61.203.0.0/17	AS2518	BIGLOBE Inc.	32,768
61.203.224.0/19	AS4721	JCOM Co., Ltd.	8,192
61.203.192.0/19	AS7679	QTnet,Inc.	8,192
61.203.176.0/20	AS4694	IDC Frontier Inc.	4,096
61.203.128.0/20	AS17676	SoftBank Corp.	4,096
61.203.224.0/20	AS4721	Jupiter Telecommunications Co., Ltd.	4,096
61.203.168.0/21	AS10013	FreeBit Co., Ltd.	2,048
61.203.164.0/22	AS10013	FreeBit Co., Ltd.	1,024

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
61.203.244.235	usamibank.jp	1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

80 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
61.203.246.53	AS4721 JCOM Co., Ltd.	`8.93ms` from Tokyo, JP
61.203.244.1	AS4721 JCOM Co., Ltd.	`4.19ms` from Tokyo, JP
61.203.249.193	AS4721 JCOM Co., Ltd.	`2.27ms` from Tokyo, JP
61.203.242.38	AS4721 JCOM Co., Ltd.	`9.47ms` from Tokyo, JP
61.203.241.189	AS4721 JCOM Co., Ltd.	`11.11ms` from Tokyo, JP
61.203.248.1	AS4721 JCOM Co., Ltd.	`2.65ms` from Tokyo, JP
61.203.245.16	AS4721 JCOM Co., Ltd.	`13.53ms` from Tokyo, JP
61.203.243.22	AS4721 JCOM Co., Ltd.	`10.87ms` from Tokyo, JP
61.203.240.1	AS4721 JCOM Co., Ltd.	`3.88ms` from Tokyo, JP
61.203.250.1	AS4721 JCOM Co., Ltd.	`2.65ms` from Tokyo, JP
61.203.247.216	AS4721 JCOM Co., Ltd.	`5.70ms` from Tokyo, JP

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
217.131.173.68	AS34984 Superonline Iletisim Hizmetleri A.S.	`19.50ms` from Ankara, TR
73.87.144.180	AS7922 Comcast Cable Communications, LLC	`6.94ms` from Ashburn, US
1.92.230.36	AS55990 Huawei Cloud Service data center	`8.60ms` from Beijing, CN
191.59.41.68	AS4230 CLARO S.A.	`17.24ms` from Brasilia, BR
151.80.245.228	AS16276 OVH SAS	`0.24ms` from Gravelines, FR
58.56.66.4	AS58540 Jinan,250000	`5.33ms` from Jinan, CN
178.165.107.164	AS34700 MAXNET TELECOM, LTD	`6.93ms` from Kharkiv, UA
154.71.160.164	AS36907 TV CABO ANGOLA LDA	`1.80ms` from Luanda, AO
23.57.15.84	AS9498 BHARTI Airtel Ltd.	`0.27ms` from Mumbai, IN
185.216.96.132	AS209254 PYXYA SAS	`0.37ms` from Paris, FR
110.142.60.212	AS1221 Telstra Limited	`1.49ms` from Perth, AU
39.71.42.212	AS4837 CHINA UNICOM China169 Backbone	`5.69ms` from Qingdao, CN
193.200.217.4	AS212665 Sandefjord Fiber AS	`0.22ms` from Sandefjord, NO
96.31.160.132	AS17378 TierPoint, LLC	`0.26ms` from Seattle, US
20.241.222.116	AS8075 Microsoft Corporation	`0.36ms` from Ashburn, US
192.99.241.212	AS16276 OVH SAS	`0.12ms` from Beauharnois, CA
181.45.157.36	AS27747 Telecentro S.A.	`6.90ms` from Buenos Aires, AR
125.67.127.20	AS4134 CHINANET-BACKBONE	`9.48ms` from Chengdu, CN
112.192.251.84	AS4837 CHINA UNICOM China169 Backbone	`3.65ms` from Chengdu, CN
96.189.142.52	AS53297 Comcast Cable Communications, LLC	`0.05ms` from Chicago, US
71.72.95.196	AS10796 Charter Communications Inc	`10.87ms` from Columbus, US
76.224.183.116	AS7018 AT&T Enterprises, LLC	`18.27ms` from Dallas, US
63.181.112.148	AS16509 Amazon.com, Inc.	`0.15ms` from Frankfurt am Main, DE
162.229.112.36	AS7018 AT&T Enterprises, LLC	`17.39ms` from Houston, US
14.93.193.164	AS4766 Korea Telecom	`7.04ms` from Incheon, KR

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -m4 61.203.255.129

traceroute to 61.203.255.129 (61.203.255.129): 4 hops max, 52 byte packets

1 [AS149573] 151.243.98.1 285.251 ms

2 *

3 *

4 *

Measurement taken from

IPinfo ProbeNet in Hyderabad, IN

On January 30th 2026

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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