203.205.104.0/21

AS18092 · Kyushu Tele Communications Company

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Summary

Country	Japan
Domain
ASN	AS18092
Parent Range	203.205.96.0/20
Registry	JPNIC
ID	CSF-NET

WHOIS Details

inetnum:        203.205.104.0 - 203.205.107.255
netname:        CSF-NET
descr:          Kyushu Tele Communications Company
country:        JP
admin-c:        NS1881JP
tech-c:         HK5776JP
last-modified:  2011-04-14T04:11:03Z
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 203.205.104.0/21

Range	ASN	Company	Num of IPs
203.205.96.0/20	AS18092	Kyushu Tele Communications Company	4,096

Nearby Ranges

BGP prefixes that overlap with 203.205.0.0/16

Range	ASN	Company	Num of IPs
203.205.64.0/19	AS58519	CHINANET Guangdong province network	8,192
203.205.96.0/20	AS18092	Kyushu Tele Communications Company	4,096
203.205.112.0/20	AS2914	NTT Ltd Japan Corporation	4,096

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

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

IP Address	ASN	Details
203.205.109.28	AS18092 Kyushu Tele Communications Company	`13.40ms` from Osaka, JP
203.205.110.1	AS18092 Kyushu Tele Communications Company	`14.16ms` from Osaka, JP
203.205.108.66	AS18092 Kyushu Tele Communications Company	`17.30ms` from Osaka, JP
203.205.106.28	AS18092 Kyushu Tele Communications Company	`16.59ms` from Osaka, JP
203.205.104.1	AS18092 Kyushu Tele Communications Company	`6.55ms` from Osaka, JP
203.205.111.157	AS18092 Kyushu Tele Communications Company	`16.68ms` from Osaka, JP
203.205.105.56	AS18092 Kyushu Tele Communications Company	`15.84ms` from Osaka, JP
203.205.107.22	AS18092 Kyushu Tele Communications Company	`16.91ms` from Osaka, 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
65.246.21.101	AS701 Verizon Business	`4.67ms` from Ashburn, US
18.9.26.5	AS3 Massachusetts Institute of Technology	`0.55ms` from Boston, US
20.12.100.21	AS8075 Microsoft Corporation	`0.27ms` from Boydton, US
46.197.171.69	AS47524 Turksat Uydu Haberlesme ve Kablo TV Isletme A.S.	`10.07ms` from Bursa, TR
175.21.184.213	AS4837 CHINA UNICOM China169 Backbone	`4.69ms` from Changchun, CN
42.193.58.5	AS45090 Shenzhen Tencent Computer Systems Company Limited	`3.01ms` from Chengdu, CN
60.14.101.53	AS4837 CHINA UNICOM China169 Backbone	`7.89ms` from Harbin, CN
176.33.170.149	AS34984 Superonline Iletisim Hizmetleri A.S.	`5.68ms` from Istanbul, TR
38.110.12.133	AS174 Cogent Communications, LLC	`0.71ms` from Los Angeles, US
184.75.13.101	AS12271 Charter Communications Inc	`1.69ms` from New York City, US
177.9.75.117	AS27699 TELEFÔNICA BRASIL S.A	`1.55ms` from Osasco, BR
34.200.14.245	AS14618 Amazon.com, Inc.	`0.18ms` from Reston, US
79.55.7.37	AS3269 Telecom Italia S.p.A.	`4.20ms` from Rome, IT
207.54.92.165	AS16417 Cisco Systems Ironport Division	`0.80ms` from Santa Clara, US
119.198.240.101	AS4766 Korea Telecom	`6.70ms` from Seoul, KR
218.48.224.213	AS9318 SK Broadband Co Ltd	`6.35ms` from Seoul, KR
83.253.65.197	AS1257 Tele2 Sverige AB	`5.72ms` from Stockholm, SE
36.154.15.213	AS56046 China Mobile communications corporation	`3.79ms` from Suzhou, CN
61.31.213.53	AS9924 Taiwan Fixed Network, Telco and Network Service Provider.	`1.63ms` from Taipei, TW
126.112.184.21	AS17676 SoftBank Corp.	`5.49ms` from Tokyo, JP
153.143.237.5	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.95ms` from Tokyo, JP
110.131.146.21	AS9824 JCOM Co., Ltd.	`11.18ms` from Tokyo, JP
197.7.219.5	AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom)	`11.04ms` from Tunis, TN
60.253.128.37	AS17964 Beijing Dian-Xin-Tong Network Technologies Co., Ltd.	`3.77ms` from Beijing, CN
111.163.207.37	AS4837 CHINA UNICOM China169 Backbone	`6.56ms` from Beijing, CN

Traceroute

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

traceroute -a -n -q1 -f3 203.205.108.66

traceroute to 203.205.108.66 (203.205.108.66): 64 hops max, 52 byte packets

3 [AS4785] 203.96.236.62 0.295 ms

4 *

5 [] 218.100.9.89 0.177 ms

6 [] 218.100.9.157 6.198 ms

7 [AS18092] 219.117.48.34 7.481 ms

8 [AS18092] 114.141.37.182 6.491 ms

9 [AS18092] 203.205.108.66 19.07 ms

Measurement taken from

IPinfo ProbeNet in Osaka, JP

On December 20th 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.

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