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	AS4766	Korea Telecom	2,097,152
121.160.0.0/11	AS38089	Korea Telecom	2,097,152
121.128.0.0/11	AS17588	Korea Telecom	2,097,152
121.160.0.0/11	AS4766	Korea Telecom	2,097,152
121.160.0.0/11	AS23582	Korea Telecom	2,097,152
121.128.0.0/11	AS38122	Korea Telecom	2,097,152
121.128.0.0/11	AS9856	Korea Telecom	2,097,152
121.128.0.0/11	AS18333	Korea Telecom	2,097,152
121.128.0.0/11	AS9647	Korea Telecom	2,097,152
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	AS137699	CHINANET jiangsu province network	1,048,576
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
121.208.0.0/12	AS1221	Telstra Limited	1,048,576
121.224.0.0/12	AS137697	CHINANET jiangsu province network	1,048,576
121.224.0.0/12	AS146966	CHINANET jiangsu province network	1,048,576
121.224.0.0/12	AS134770	CHINANET jiangsu province network	1,048,576
121.8.0.0/13	AS140308	CHINANET Guangdong province network	524,288
121.8.0.0/13	AS135089	CHINANET Guangdong province network	524,288
121.8.0.0/13	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	AS4134	CHINANET Guangdong province network	524,288
121.112.0.0/13	AS4713	NTT DOCOMO BUSINESS,Inc.	524,288
121.40.0.0/14	AS37963	Aliyun Computing Co., LTD	262,144
121.32.0.0/14	AS4134	CHINANET Guangdong province network	262,144
121.24.0.0/14	AS4837	China Unicom Hebei 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
121.60.0.0/14	AS4134	CHINANET Hubei province network	262,144
121.248.0.0/14	AS4538	China Education and Research Network	262,144
121.64.0.0/14	AS17598	LG DACOM Corporation	262,144
121.64.0.0/14	AS17586	LG DACOM Corporation	262,144
121.204.0.0/14	AS133774	CHINANET Fujian province network	262,144
121.64.0.0/14	AS23555	LG DACOM Corporation	262,144
121.204.0.0/14	AS133775	CHINANET Fujian province network	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	AS148981	CHINANET Hubei province network	262,144
121.80.0.0/14	AS17511	OPTAGE Inc.	262,144
121.124.0.0/15	AS9318	SK Broadband Co Ltd	131,072
121.98.0.0/15	AS140220	Two Degrees Mobile Limited	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
121.194.0.0/15	AS4538	China Education and Research Network	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
121.96.0.0/15	AS6648	Bayan Telecommunications Incorporated	131,072
121.76.0.0/15	AS9812	Oriental Cable Network 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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Useful for Cybersecurity

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
121.85.66.234	AS17511 OPTAGE Inc.	`2.44ms` from Osaka, JP
121.85.28.195	AS17511 OPTAGE Inc.	`2.27ms` from Osaka, JP
121.85.9.29	AS17511 OPTAGE Inc.	`3.10ms` from Osaka, JP
121.84.186.241	AS17511 OPTAGE Inc.	`1.48ms` from Osaka, JP
121.84.216.67	AS17511 OPTAGE Inc.	`1.87ms` from Osaka, JP
121.85.0.134	AS17511 OPTAGE Inc.	`1.40ms` from Osaka, JP
121.84.232.137	AS17511 OPTAGE Inc.	`1.51ms` from Osaka, JP
121.84.204.59	AS17511 OPTAGE Inc.	`1.69ms` from Osaka, JP
121.85.21.121	AS17511 OPTAGE Inc.	`2.78ms` from Osaka, JP
121.85.26.214	AS17511 OPTAGE Inc.	`2.55ms` from Osaka, JP
121.85.75.85	AS17511 OPTAGE Inc.	`2.70ms` from Osaka, JP
121.84.173.167	AS17511 OPTAGE Inc.	`2.91ms` from Osaka, JP
121.85.38.206	AS17511 OPTAGE Inc.	`2.08ms` from Osaka, JP
121.84.185.249	AS17511 OPTAGE Inc.	`1.67ms` from Osaka, JP
121.85.62.47	AS17511 OPTAGE Inc.	`2.63ms` from Osaka, JP
121.84.181.238	AS17511 OPTAGE Inc.	`1.56ms` from Osaka, JP
121.85.63.107	AS17511 OPTAGE Inc.	`2.52ms` from Osaka, JP
121.85.57.10	AS17511 OPTAGE Inc.	`0.41ms` from Osaka, JP
121.84.235.217	AS17511 OPTAGE Inc.	`1.79ms` from Osaka, JP
121.85.51.58	AS17511 OPTAGE Inc.	`1.78ms` from Osaka, JP
121.84.175.77	AS17511 OPTAGE Inc.	`2.02ms` from Osaka, JP
121.85.58.236	AS17511 OPTAGE Inc.	`1.70ms` from Osaka, JP
121.85.50.143	AS17511 OPTAGE Inc.	`2.17ms` from Osaka, JP
121.84.171.75	AS17511 OPTAGE Inc.	`2.20ms` from Osaka, JP
121.85.1.189	AS17511 OPTAGE Inc.	`1.50ms` 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
176.41.199.238	AS34984 Superonline Iletisim Hizmetleri A.S.	`3.99ms` from Ankara, TR
71.210.129.254	AS19901 Brightspeed	`8.34ms` from Ashburn, US
222.153.231.78	AS4771 Spark New Zealand Trading Ltd.	`3.30ms` from Auckland, NZ
34.222.93.30	AS16509 Amazon.com, Inc.	`0.28ms` from Boardman, US
75.177.105.222	AS11426 Charter Communications Inc	`9.00ms` from Charlotte, US
63.227.65.254	AS209 CenturyLink Communications, LLC	`7.54ms` from Chicago, US
173.161.111.94	AS7922 Comcast Cable Communications, LLC	`5.18ms` from Chicago, US
3.70.113.78	AS16509 Amazon.com, Inc.	`0.18ms` from Frankfurt am Main, DE
217.224.204.14	AS3320 Deutsche Telekom AG	`6.25ms` from Frankfurt am Main, DE
91.96.0.62	AS9145 EWE TEL GmbH	`3.70ms` from Hamburg, DE
218.188.55.238	AS9304 HGC Global Communications Limited	`1.63ms` from Hong Kong, HK
72.182.82.78	AS11427 Charter Communications Inc	`12.01ms` from Houston, US
195.86.253.190	AS984 OCTOPUS WEB SOLUTION INC	`0.47ms` from Kuala Lumpur, MY
188.231.166.254	AS31148 Freenet LTD	`0.54ms` from Kyiv, UA
221.201.119.238	AS4837 CHINA UNICOM China169 Backbone	`9.83ms` from Liaoyang, CN
175.170.94.190	AS4837 CHINA UNICOM China169 Backbone	`8.01ms` from Liaoyang, CN
88.157.210.254	AS1897 NOS COMUNICACOES, S.A.	`0.52ms` from Lisbon, PT
85.138.237.174	AS2860 NOS COMUNICACOES, S.A.	`5.75ms` from Lisbon, PT
94.5.8.142	AS5607 Sky UK Limited	`10.45ms` from London, GB
122.54.73.190	AS9299 Philippine Long Distance Telephone Company	`0.34ms` from Manila, PH
37.235.157.30	AS41268 Sesameware FZ-LLC	`7.88ms` from Moscow, RU
96.67.95.206	AS7922 Comcast Cable Communications, LLC	`9.56ms` from Murfreesboro, US
82.104.119.254	AS3269 Telecom Italia S.p.A.	`1.14ms` from Rome, IT
34.124.181.30	AS396982 Google LLC	`0.13ms` from Singapore, SG
14.100.91.254	AS9506 Singtel Fibre Broadband	`1.30ms` from Singapore, SG

Traceroute

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

traceroute -a -n -q1 -m5 121.86.81.11

traceroute to 121.86.81.11 (121.86.81.11): 5 hops max, 52 byte packets

1 [AS15169] 74.125.251.87 220.303 ms

2 [AS17511] 203.140.81.164 261.829 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Madrid, ES

On December 14th 2025

What are IP address ranges?

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