203.216.144.0/20

AS4694 · IDC Frontier Inc.

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Summary

Country	Japan
Domain	idcf.jp
ASN	AS4694
Parent Range	203.216.128.0/19
Registry	APNIC
ID	TOKYONET

WHOIS Details

inetnum:        203.216.128.0 - 203.216.159.255
netname:        IDCFNet
descr:          IDC Frontier Inc.
descr:          Hibiya Park Front 18F, 2-1-6 Uchisaiwai-cho, Chiyoda-ku, Tokyo, 100-0011, Japan
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
remarks:        Email address for spam or abuse complaints: abuse@idc.jp
country:        JP
mnt-by:         MAINT-JPNIC
mnt-lower:      MAINT-JPNIC
mnt-irt:        IRT-JPNIC-JP
status:         ALLOCATED PORTABLE
last-modified:  2020-06-12T09:54:03Z
source:         APNIC

irt:            IRT-JPNIC-JP
address:        Urbannet-Kanda Bldg 4F, 3-6-2 Uchi-Kanda
address:        Chiyoda-ku, Tokyo 101-0047, Japan
e-mail:         hostmaster@nic.ad.jp
abuse-mailbox:  hostmaster@nic.ad.jp
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
auth:           # Filtered
mnt-by:         MAINT-JPNIC
last-modified:  2017-10-18T10:21:54Z
source:         APNIC

role:           Japan Network Information Center
address:        Urbannet-Kanda Bldg 4F
address:        3-6-2 Uchi-Kanda
address:        Chiyoda-ku, Tokyo 101-0047,Japan
country:        JP
phone:          +81-3-5297-2311
fax-no:         +81-3-5297-2312
e-mail:         hostmaster@nic.ad.jp
admin-c:        JI13-AP
tech-c:         JE53-AP
nic-hdl:        JNIC1-AP
mnt-by:         MAINT-JPNIC
last-modified:  2012-08-28T07:58:02Z
source:         APNIC

inetnum:        203.216.128.0 - 203.216.159.255
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
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)
last-modified:  2020-06-13T03:15:15Z
source:         JPNIC

Overlapping Ranges

BGP prefixes that contain 203.216.144.0/20

Range	ASN	Company	Num of IPs
203.216.128.0/19	AS4694	IDC Frontier Inc.	8,192

Nearby Ranges

BGP prefixes that overlap with 203.216.0.0/16

Range	ASN	Company	Num of IPs
203.216.0.0/17	AS23720	Rakuten Mobile Network, Inc.	32,768
203.216.160.0/19	AS17878	LX	8,192
203.216.224.0/19	AS23816	LY Corporation	8,192
203.216.128.0/19	AS4694	IDC Frontier Inc.	8,192
203.216.192.0/19	AS9607	BroadBand Tower, Inc.	8,192

Hosted domains

There are no domains currently hosted on this ASN.

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

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
98.26.103.36	AS11426 Charter Communications Inc	`10.20ms` from Ashburn, US
120.0.84.84	AS4837 CHINA UNICOM China169 Backbone	`11.12ms` from Beijing, CN
52.251.127.228	AS8075 Microsoft Corporation	`0.18ms` from Boydton, US
72.178.205.68	AS11427 Charter Communications Inc	`14.09ms` from Dallas, US
65.99.196.228	AS17378 TierPoint, LLC	`0.51ms` from Dallas, US
119.136.23.20	AS4134 CHINANET-BACKBONE	`1.49ms` from Guangzhou, CN
114.236.149.244	AS4134 CHINANET-BACKBONE	`6.17ms` from Huai'an, CN
1.252.20.100	AS9318 SK Broadband Co Ltd	`6.75ms` from Incheon, KR
94.61.84.4	AS12353 Vodafone Portugal	`7.92ms` from Lisbon, PT
187.223.14.4	AS8151 UNINET	`19.80ms` from Los Angeles, US
80.47.234.132	AS13285 TalkTalk Communications Limited	`3.54ms` from Manchester, GB
24.102.115.212	AS12271 Charter Communications Inc	`3.50ms` from New York City, US
115.203.171.84	AS4134 CHINANET-BACKBONE	`8.08ms` from Ningbo, CN
207.121.15.100	AS3356 Level 3 Parent, LLC	`2.31ms` from Orlando, US
175.251.137.100	AS4766 Korea Telecom	`8.99ms` from Seoul, KR
189.154.82.148	AS8151 UNINET	`11.63ms` from Tucson, US
87.162.128.116	AS3320 Deutsche Telekom AG	`4.07ms` from Berlin, DE
190.1.238.4	AS10299 EMPRESAS MUNICIPALES DE CALI E.I.C.E. E.S.P.	`9.10ms` from Bogota, CO
96.188.210.244	AS53297 Comcast Cable Communications, LLC	`0.88ms` from Chicago, US
64.186.62.116	AS26554 US Signal Company, L.L.C.	`2.06ms` from Flint, US
13.41.143.116	AS16509 Amazon.com, Inc.	`0.19ms` from London, GB
109.70.130.164	AS45037 Hispaweb Network	`0.30ms` from Madrid, ES
79.112.28.244	AS57269 DIGI SPAIN TELECOM S.A	`0.83ms` from Madrid, ES
13.73.115.132	AS8075 Microsoft Corporation	`0.51ms` from Melbourne, AU
71.36.62.4	AS209 CenturyLink Communications, LLC	`9.14ms` from Missoula, US

Traceroute

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

traceroute -a -n -q1 -f3 -m7 203.216.158.68

traceroute to 203.216.158.68 (203.216.158.68): 7 hops max, 52 byte packets

3 [AS201011] 81.95.9.44 0.405 ms

4 [] 101.203.78.19 0.707 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On February 7th 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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