61.205.112.0/20

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:        61.205.112.0 - 61.205.119.255
netname:        K-Opticom-CIDR-BLK-JP
descr:          OPTAGE Inc.
remarks:        Email address for spam or abuse complaints : abuse@optage.co.jp
country:        JP
admin-c:        JP00014196
tech-c:         JP00014196
last-modified:  2019-09-19T04:06:59Z
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 61.205.0.0/16

Range	ASN	Company	Num of IPs
61.205.192.0/18	AS9595	NTT-ME Corporation	16,384
61.205.128.0/18	AS9617	JCOM Co., Ltd.	16,384
61.205.0.0/20	AS17511	OPTAGE Inc.	4,096
61.205.80.0/20	AS17511	OPTAGE Inc.	4,096
61.205.96.0/20	AS17511	OPTAGE Inc.	4,096
61.205.32.0/21	AS18144	Enecom,Inc.	2,048
61.205.60.0/22	AS10013	FreeBit Co., Ltd.	1,024
61.205.56.0/24	AS10013	trunc inc.	256
61.205.58.0/24	AS10013	FreeBit Co., Ltd.	256
61.205.57.0/24	AS10013	FreeBit Co., Ltd.	256
61.205.59.0/24	AS10013	trunk inc.	256

Hosted domains

There are 7 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
61.205.120.83	miraitechno.co.jp	4
61.205.121.85	ks-sol-support.jp	1
61.205.121.123	mcdonalds-online.com	1
61.205.112.210	pillar.co.jp	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

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

IP Address	ASN	Details
61.205.115.117	AS17511 OPTAGE Inc.	`0.51ms` from Osaka, JP
61.205.112.222	AS17511 OPTAGE Inc.	`1.39ms` from Osaka, JP
61.205.122.33	AS17511 OPTAGE Inc.	`1.22ms` from Osaka, JP
61.205.123.225	AS17511 OPTAGE Inc.	`0.91ms` from Osaka, JP
61.205.120.233	AS17511 OPTAGE Inc.	`0.89ms` from Osaka, JP
61.205.119.160	AS17511 OPTAGE Inc.	`0.61ms` from Osaka, JP
61.205.113.125	AS17511 OPTAGE Inc.	`0.74ms` from Osaka, JP
61.205.124.159	AS17511 OPTAGE Inc.	`1.40ms` from Osaka, JP
61.205.121.49	AS17511 OPTAGE Inc.	`1.03ms` from Osaka, JP
61.205.116.161	AS17511 OPTAGE Inc.	`0.78ms` from Osaka, JP
61.205.127.118	AS17511 OPTAGE Inc.	`0.46ms` from Osaka, JP
61.205.118.200	AS17511 OPTAGE Inc.	`0.74ms` from Osaka, JP
61.205.125.91	AS17511 OPTAGE Inc.	`2.27ms` 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
64.181.194.244	AS31898 Oracle Corporation	`0.31ms` from Chicago, US
78.152.193.20	AS15502 Vodafone Ireland Limited	`2.97ms` from Dublin, IE
172.104.143.244	AS63949 Akamai Connected Cloud	`0.31ms` from Frankfurt am Main, DE
124.156.138.20	AS132203 Tencent Building, Kejizhongyi Avenue	`0.30ms` from Hong Kong, HK
86.160.146.36	AS2856 British Telecommunications PLC	`1.85ms` from London, GB
91.125.215.52	AS6871 Plusnet	`3.13ms` from London, GB
85.217.152.164	AS200845 AVATEL TELECOM, SA	`9.72ms` from Madrid, ES
67.231.201.4	AS23314 Summit Broadband	`5.21ms` from Miami, US
189.46.254.244	AS27699 TELEFÔNICA BRASIL S.A	`2.92ms` from Osasco, BR
188.216.161.148	AS30722 Vodafone Italia S.p.A.	`9.31ms` from Rome, IT
20.64.98.36	AS8075 Microsoft Corporation	`0.34ms` from San Antonio, US
208.83.247.100	AS30303 Ooma, Inc.	`0.69ms` from San Jose, US
35.206.3.4	AS15169 Google LLC	`0.22ms` from The Dalles, US
145.239.134.20	AS16276 OVH SAS	`0.11ms` from Warsaw, PL
76.223.81.68	AS16509 Amazon.com, Inc.	`0.04ms` from Bangkok, TH
72.104.228.84	AS6167 Verizon Business	`19.50ms` from Chicago, US
90.102.154.212	AS3215 Orange S.A.	`6.12ms` from Frankfurt am Main, DE
24.252.21.116	AS22773 Cox Communications Inc.	`8.74ms` from Kansas City, US
86.158.228.116	AS2856 British Telecommunications PLC	`4.59ms` from London, GB
85.36.199.148	AS3269 Telecom Italia S.p.A.	`7.81ms` from Milan, IT
73.195.146.84	AS7922 Comcast Cable Communications, LLC	`6.49ms` from New York City, US
104.234.226.4	AS273595 Lastnet Telecom	`2.89ms` from Novo Hamburgo, BR
98.90.110.180	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
1.169.120.228	AS3462 Data Communication Business Group	`1.11ms` from Taipei, TW
110.231.160.212	AS4837 CHINA UNICOM China169 Backbone	`13.92ms` from Tianjin, CN

Traceroute

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

traceroute -a -n -q1 61.205.118.25

traceroute to 61.205.118.25 (61.205.118.25): 64 hops max, 52 byte packets

1 [AS15169] 74.125.251.87 1.921 ms

2 [AS17511] 61.205.118.25 1.848 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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