61.203.176.0/21

AS4694 · IDC Frontier Inc.

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Summary

Country	Japan
Domain	idcf.jp
ASN	AS4694
Parent Range	61.203.176.0/20
Registry	JPNIC
ID	IDCFNET-CIDR-BLK-JP

WHOIS Details

inetnum:        61.203.176.0 - 61.203.191.255
netname:        IDCFNet-CIDR-BLK-JP
descr:          IDC Frontier Inc.
remarks:        Email address for spam or abuse complaints : abuse@idc.jp
country:        JP
admin-c:        JP00169834
tech-c:         JP00169834
last-modified:  2020-06-13T03:16:09Z
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 61.203.176.0/21

Range	ASN	Company	Num of IPs
61.203.176.0/20	AS4694	IDC Frontier Inc.	4,096

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 are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
51.158.142.5	AS12876 SCALEWAY S.A.S.	`0.40ms` from Amsterdam, NL
168.93.241.229	AS5650 Frontier Communications of America, Inc.	`0.25ms` from Ashburn, US
73.38.124.181	AS7922 Comcast Cable Communications, LLC	`8.48ms` from Boston, US
135.131.155.5	AS4181 TDS TELECOM	`7.00ms` from Chicago, US
149.75.33.229	AS6079 RCN	`6.16ms` from Chicago, US
51.190.35.245	AS5607 Sky UK Limited	`5.99ms` from Erith, GB
217.107.120.117	AS12389 PJSC Rostelecom	`0.15ms` from Frankfurt am Main, DE
138.23.101.69	AS6106 University of California, Riverside	`5.01ms` from Los Angeles, US
5.175.94.117	AS44507 OJSC Kostroma Municipal Telephone Network	`7.66ms` from Moscow, RU
128.91.240.197	AS55 University of Pennsylvania	`3.01ms` from New York City, US
79.160.168.229	AS29695 Altibox AS	`8.31ms` from Oslo, NO
151.54.236.85	AS1267 WIND TRE S.P.A.	`13.87ms` from Rome, IT
142.58.91.5	AS11105 Simon Fraser University	`4.08ms` from Seattle, US
155.102.23.21	AS24429 Zhejiang Taobao Network Co.,Ltd	`0.95ms` from Seoul, KR
211.41.154.85	AS9689 SK Broadband Co Ltd	`2.56ms` from Seoul, KR
79.100.177.85	AS8866 Vivacom Bulgaria EAD	`0.95ms` from Sofia, BG
46.171.158.21	AS5617 Orange Polska Spolka Akcyjna	`5.91ms` from Warsaw, PL
196.191.67.197	AS24757 Ethio Telecom	`9.13ms` from Addis Ababa, ET
2.49.130.85	AS5384 Emirates Internet	`3.04ms` from Al Fujairah City, AE
185.184.99.133	AS206516 ProRail B.V.	`1.84ms` from Amsterdam, NL
129.213.113.101	AS31898 Oracle Corporation	`0.19ms` from Ashburn, US
204.116.96.245	AS2711 Spirit Communications	`0.32ms` from Atlanta, US
44.232.145.85	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
50.235.223.213	AS7922 Comcast Cable Communications, LLC	`0.87ms` from Boston, US
175.34.109.133	AS4804 Microplex PTY LTD	`2.29ms` from Brisbane, AU

Traceroute

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

traceroute -a -n -q1 -f5 -m12 61.203.179.186

traceroute to 61.203.179.186 (61.203.179.186): 12 hops max, 52 byte packets

5 [AS6939] 184.105.64.69 26.85 ms

6 *

7 *

8 *

9 [AS2497] 58.138.112.111 119.266 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Denver, US

On January 18th 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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