203.140.0.0/19

AS4693 · CSK-IT MANAGEMENT CORPORATION

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Summary

Country	Japan
Domain	csk.com
ASN	AS4693
Registry	JPNIC
ID	CSK-ITO-CIDR-BLK-JP

WHOIS Details

inetnum:        203.140.0.0 - 203.140.15.255
netname:        CSK-ITO-CIDR-BLK-JP
descr:          SCSK Corporation
country:        JP
admin-c:
tech-c:
last-modified:  2014-04-01T00:10:48Z
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

Nearby Ranges

BGP prefixes that overlap with 203.140.0.0/16

Range	ASN	Company	Num of IPs
203.140.64.0/19	AS17511	OPTAGE Inc.	8,192
203.140.192.0/20	AS17509	STARNET Co.,Ltd.	4,096
203.140.208.0/20	AS17939	miyazaki cabletelevision network Co.,LTD	4,096
203.140.224.0/20	AS15830	Equinix Japan Enterprise K.K.	4,096
203.140.160.0/20	AS7511	SYNAPSE Co.,Ltd.	4,096
203.140.240.0/20	AS9622	Kurashiki Cable TV Corporation	4,096
203.140.176.0/21	AS59108	KATCH Network Inc.	2,048
203.140.184.0/21	AS59108	KATCH Network Inc.	2,048

Hosted domains

There are 6 domain names hosted across 4 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.140.28.8	sofmap.com	3
203.140.21.26	ph-scope.jp	1
203.140.31.100	sbmweb-appointment.com	1
203.140.28.6	houjin-kojima.com	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

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

IP Address	ASN	Details
203.140.25.2	AS4693 CSK-IT MANAGEMENT CORPORATION	`3.00ms` from Tokyo, JP
203.140.21.14	AS4693 CSK-IT MANAGEMENT CORPORATION	`1.87ms` from Tokyo, JP
203.140.27.34	AS4693 CSK-IT MANAGEMENT CORPORATION	`1.73ms` from Tokyo, JP
203.140.30.18	AS4693 CSK-IT MANAGEMENT CORPORATION	`10.64ms` from Tokyo, JP
203.140.31.137	AS4693 CSK-IT MANAGEMENT CORPORATION	`9.81ms` from Tokyo, JP
203.140.9.15	AS4693 CSK-IT MANAGEMENT CORPORATION	`9.91ms` 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
72.210.69.131	AS22773 Cox Communications Inc.	`6.74ms` from Atlanta, US
197.49.223.3	AS8452 TE-AS	`9.65ms` from Cairo, EG
75.65.151.211	AS7922 Comcast Cable Communications, LLC	`17.73ms` from Dallas, US
161.69.24.3	AS46484 Trellix	`1.61ms` from Denver, US
73.243.187.19	AS7922 Comcast Cable Communications, LLC	`1.89ms` from Denver, US
5.188.51.3	AS214790 Brainoza OU	`0.95ms` from Dronten, NL
3.29.186.99	AS16509 Amazon.com, Inc.	`0.16ms` from Dubai, AE
52.19.76.35	AS16509 Amazon.com, Inc.	`0.16ms` from Dublin, IE
113.228.126.35	AS4837 CHINA UNICOM China169 Backbone	`5.08ms` from Liaoyang, CN
68.86.51.67	AS7922 Comcast Cable Communications, LLC	`2.05ms` from Murfreesboro, US
161.10.128.3	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`9.63ms` from Panama, PA
34.196.193.99	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
3.90.0.19	AS14618 Amazon.com, Inc.	`0.47ms` from Reston, US
73.170.86.3	AS7922 Comcast Cable Communications, LLC	`6.85ms` from Santa Clara, US
191.246.38.67	AS22085 Claro S/A	`1.55ms` from Sao Paulo, BR
20.214.159.179	AS8075 Microsoft Corporation	`0.35ms` from Seoul, KR
89.18.109.131	AS41401 RB Communication AB	`3.68ms` from Stockholm, SE
83.10.21.243	AS5617 Orange Polska Spolka Akcyjna	`8.62ms` from Warsaw, PL
77.175.60.115	AS1136 KPN B.V.	`1.52ms` from Amsterdam, NL
185.220.183.179	AS205367 NetPoint LLC	`1.14ms` from Baku, AZ
191.82.225.99	AS22927 Telefonica de Argentina	`17.62ms` from Buenos Aires, AR
203.109.201.179	AS9500 One New Zealand Group Limited	`1.45ms` from Christchurch, NZ
74.141.138.19	AS10796 Charter Communications Inc	`11.02ms` from Columbus, US
3.75.168.51	AS16509 Amazon.com, Inc.	`0.20ms` from Frankfurt am Main, DE
14.166.155.227	AS45899 VNPT Corp	`1.95ms` from Hanoi, VN

Traceroute

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

traceroute -a -n -q1 -f5 203.140.9.1

traceroute to 203.140.9.1 (203.140.9.1): 64 hops max, 52 byte packets

5 [] 210.173.176.39 2.513 ms

6 [AS4693] 210.249.210.14 10.688 ms

7 [AS4693] 203.140.9.1 10.002 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On November 14th 2025

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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