121.84.0.0/14

AS17511 · OPTAGE Inc.

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Summary

Country	Japan
Domain	optage.co.jp
ASN	AS17511
Registry	JPNIC
ID	K-OPTICOM-CIDR-BLK-JP

WHOIS Details

inetnum:        121.84.0.0 - 121.87.255.255
netname:        K-Opticom-CIDR-BLK-JP
descr:          OPTAGE Inc.
remarks:        Email address for spam or abuse complaints : [email protected]
country:        JP
admin-c:        JP00014196
tech-c:         JP00014196
last-modified:  2019-09-19T04:01:36Z
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 121.0.0.0/8

Range	ASN	Company	Num of IPs
121.128.0.0/11	AS9856	Korea Telecom	2,097,152
121.128.0.0/11	AS17588	Korea Telecom	2,097,152
121.128.0.0/11	AS4766	Korea Telecom	2,097,152
121.128.0.0/11	AS9647	Korea Telecom	2,097,152
121.160.0.0/11	AS4766	Korea Telecom	2,097,152
121.160.0.0/11	AS38089	Korea Telecom	2,097,152
121.160.0.0/11	AS23582	Korea Telecom	2,097,152
121.128.0.0/11	AS18333	Korea Telecom	2,097,152
121.128.0.0/11	AS38122	Korea Telecom	2,097,152
121.224.0.0/12	AS140292	CHINANET jiangsu province network	1,048,576
121.224.0.0/12	AS137702	CHINANET jiangsu province network	1,048,576
121.224.0.0/12	AS137697	CHINANET jiangsu province network	1,048,576
121.224.0.0/12	AS137699	CHINANET jiangsu province network	1,048,576
121.224.0.0/12	AS134770	CHINANET jiangsu province network	1,048,576
121.224.0.0/12	AS4134	CHINANET jiangsu province network	1,048,576
121.224.0.0/12	AS134756	CHINANET jiangsu province network	1,048,576
121.224.0.0/12	AS146966	CHINANET jiangsu province network	1,048,576
121.208.0.0/12	AS1221	Telstra Limited	1,048,576
121.8.0.0/13	AS4134	CHINANET Guangdong province network	524,288
121.112.0.0/13	AS4713	NTT DOCOMO BUSINESS,Inc.	524,288
121.8.0.0/13	AS136199	CHINANET Guangdong province network	524,288
121.16.0.0/13	AS4837	China Unicom Hebei province network	524,288
121.8.0.0/13	AS140308	CHINANET Guangdong province network	524,288
121.8.0.0/13	AS135089	CHINANET Guangdong province network	524,288
121.64.0.0/14	AS17586	LG DACOM Corporation	262,144
121.248.0.0/14	AS4538	China Education and Research Network	262,144
121.24.0.0/14	AS4837	China Unicom Hebei province network	262,144
121.64.0.0/14	AS23555	LG DACOM Corporation	262,144
121.60.0.0/14	AS148981	CHINANET Hubei province network	262,144
121.80.0.0/14	AS17511	OPTAGE Inc.	262,144
121.64.0.0/14	AS17598	LG DACOM Corporation	262,144
121.64.0.0/14	AS3786	LG DACOM Corporation	262,144
121.204.0.0/14	AS133776	CHINANET Fujian province network	262,144
121.60.0.0/14	AS4134	CHINANET Hubei province network	262,144
121.32.0.0/14	AS4134	CHINANET Guangdong province network	262,144
121.204.0.0/14	AS4134	CHINANET Fujian province network	262,144
121.196.0.0/14	AS37963	Aliyun Computing Co., LTD	262,144
121.204.0.0/14	AS133775	CHINANET Fujian province network	262,144
121.40.0.0/14	AS37963	Aliyun Computing Co., LTD	262,144
121.204.0.0/14	AS133774	CHINANET Fujian province network	262,144
121.44.0.0/15	AS4739	iiNet Limited	131,072
121.98.0.0/15	AS9790	Two Degrees Mobile Limited	131,072
121.56.0.0/15	AS4134	CHINANET neimeng province network	131,072
121.2.0.0/15	AS2527	Sony Network Communications Inc.	131,072
121.4.0.0/15	AS132203	Tencent cloud computing (Beijing) Co., Ltd.	131,072
121.44.0.0/15	AS7545	iiNet Limited	131,072
121.48.0.0/15	AS4538	China Education and Research Network	131,072
121.194.0.0/15	AS4538	China Education and Research Network	131,072
121.4.0.0/15	AS45090	Tencent cloud computing (Beijing) Co., Ltd.	131,072

Hosted domains

There are 71 domain names hosted across 57 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
121.86.113.17	maniacs.tech	4
121.86.168.125	e-e.network	3
121.86.63.253	yumehaki.info	3
121.87.129.135	net-wave.biz	2
121.86.54.146	baryomoyama.com	2
121.86.100.251	nao.red	2
121.85.112.196	umekimail.com	2
121.86.232.18	797fm.com	2
121.84.194.217	freescitech.net	2
121.85.4.27	komonotachi.com	2
121.87.117.194	tony-web.org	2
121.87.15.58	sherrie.jp	1
121.84.30.179	a536is.net	1
121.85.150.106	a536is.net	1
121.85.112.38	nisshin-net.com	1
121.86.242.172	kscoltd2.work	1
121.87.168.62	habru.net	1
121.84.83.44	iconhouse.jp	1
121.85.171.180	wittern.org	1
121.86.1.86	shima-net.net	1

Hosted domains API

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Read more

Pingable IPs

6,678 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
121.85.20.185	AS17511 OPTAGE Inc.	`2.31ms` from Osaka, JP
121.85.29.73	AS17511 OPTAGE Inc.	`2.22ms` from Osaka, JP
121.85.25.220	AS17511 OPTAGE Inc.	`3.21ms` from Osaka, JP
121.84.218.160	AS17511 OPTAGE Inc.	`2.04ms` from Osaka, JP
121.84.104.108	AS17511 OPTAGE Inc.	`2.75ms` from Osaka, JP
121.84.231.99	AS17511 OPTAGE Inc.	`2.27ms` from Osaka, JP
121.84.29.240	AS17511 OPTAGE Inc.	`2.32ms` from Osaka, JP
121.84.86.241	AS17511 OPTAGE Inc.	`2.99ms` from Osaka, JP
121.84.186.241	AS17511 OPTAGE Inc.	`1.48ms` from Osaka, JP
121.84.108.155	AS17511 OPTAGE Inc.	`3.15ms` from Osaka, JP
121.84.78.183	AS17511 OPTAGE Inc.	`2.57ms` from Osaka, JP
121.84.155.241	AS17511 OPTAGE Inc.	`1.74ms` from Osaka, JP
121.84.192.87	AS17511 OPTAGE Inc.	`2.94ms` from Osaka, JP
121.84.196.7	AS17511 OPTAGE Inc.	`2.11ms` from Osaka, JP
121.85.45.6	AS17511 OPTAGE Inc.	`1.59ms` from Osaka, JP
121.84.219.228	AS17511 OPTAGE Inc.	`1.83ms` from Osaka, JP
121.84.73.227	AS17511 OPTAGE Inc.	`2.63ms` from Osaka, JP
121.84.239.238	AS17511 OPTAGE Inc.	`2.17ms` from Osaka, JP
121.84.46.5	AS17511 OPTAGE Inc.	`2.16ms` from Osaka, JP
121.84.39.70	AS17511 OPTAGE Inc.	`2.22ms` from Osaka, JP
121.84.60.250	AS17511 OPTAGE Inc.	`3.72ms` from Osaka, JP
121.84.21.2	AS17511 OPTAGE Inc.	`2.34ms` from Osaka, JP
121.84.153.42	AS17511 OPTAGE Inc.	`1.55ms` from Osaka, JP
121.84.99.146	AS17511 OPTAGE Inc.	`1.35ms` from Osaka, JP
121.84.180.155	AS17511 OPTAGE Inc.	`1.94ms` 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
95.110.131.158	AS31034 Aruba S.p.A.	`0.23ms` from Arezzo, IT
45.178.70.126	AS264758 ISP GROUP SRL	`17.24ms` from Buenos Aires, AR
174.16.93.206	AS209 CenturyLink Communications, LLC	`2.54ms` from Denver, US
43.136.97.158	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.18ms` from Guangzhou, CN
112.119.199.254	AS4760 HKT Limited	`0.74ms` from Hong Kong, HK
168.105.252.94	AS6360 University of Hawaii	`4.82ms` from Honolulu, US
154.44.12.254	AS174 Cogent Communications, LLC	`0.54ms` from Los Angeles, US
75.83.29.62	AS20001 Charter Communications Inc	`4.87ms` from Los Angeles, US
34.23.99.158	AS396982 Google LLC	`0.15ms` from Moncks Corner, US
83.172.27.142	AS33892 LLC "Severskelectrosvyaz"	`5.75ms` from Novosibirsk, RU
58.188.34.174	AS17511 OPTAGE Inc.	`2.74ms` from Osaka, JP
176.132.224.62	AS5410 Bouygues Telecom SA	`2.11ms` from Paris, FR
172.98.56.158	AS399647 Rumble USA Inc.	`0.42ms` from Phoenix, US
189.7.139.14	AS28573 Claro NXT Telecomunicacoes Ltda	`12.30ms` from Porto Alegre, BR
18.155.196.30	AS16509 Amazon.com, Inc.	`0.66ms` from San Jose, US
45.233.52.254	AS267299 Fox Net Provedor de Acesso LTDA Me	`1.63ms` from Sao Paulo, BR
14.39.82.254	AS4766 Korea Telecom	`1.26ms` from Seoul, KR
95.197.242.110	AS3301 Telia Company AB	`11.55ms` from Stockholm, SE
163.17.225.254	AS1659 Taiwan Academic Network (TANet) Information Center	`1.73ms` from Taichung, TW
182.234.114.254	AS9416 Hoshin Multimedia Center Inc.	`5.05ms` from Taipei, TW
79.184.76.30	AS5617 Orange Polska Spolka Akcyjna	`2.05ms` from Warsaw, PL
80.98.227.254	AS21334 One Hungary Ltd.	`1.91ms` from Budapest, HU
201.177.187.14	AS22927 Telefonica de Argentina	`2.71ms` from Buenos Aires, AR
169.63.233.254	AS36351 IBM Cloud	`0.84ms` from Dallas, US
188.192.150.254	AS3209 Vodafone GmbH	`6.03ms` from Frankfurt am Main, DE

Traceroute

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

traceroute -a -n -q1 -f3 121.87.129.202

traceroute to 121.87.129.202 (121.87.129.202): 64 hops max, 52 byte packets

3 [AS16509] 99.83.70.50 9.821 ms

4 [AS16509] 99.83.70.51 0.883 ms

5 [AS17511] 61.122.241.50 1.61 ms

6 [AS17511] 180.147.227.114 1.768 ms

7 [AS17511] 121.87.129.202 3.268 ms

Measurement taken from

IPinfo ProbeNet in Osaka, JP

On December 15th 2025

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