202.238.16.0/20

AS18129 · OKAYAMA NETWORK INC.

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Summary

Country	Japan
Domain	oninet.ne.jp
ASN	AS18129
Registry	JPNIC
ID	ONI-CIDR-BLK-JP

WHOIS Details

inetnum:        202.238.16.0 - 202.238.31.255
netname:        ONI-CIDR-BLK-JP
descr:          OKAYAMA NETWORK INC.
remarks:        Email address for spam or abuse complaints : oni-tech@oni.co.jp
country:        JP
admin-c:        JP00232896
tech-c:         JP00232896
last-modified:  2023-01-31T04:41:02Z
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 202.238.0.0/16

Range	ASN	Company	Num of IPs
202.238.128.0/18	AS2497	Internet Initiative Japan Inc.	16,384
202.238.192.0/18	AS2497	Internet Initiative Japan Inc.	16,384
202.238.64.0/18	AS2527	Sony Network Communications Inc.	16,384
202.238.0.0/20	AS18282	Tonami System Solutions Co., Ltd.	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

1,301 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
202.238.23.1	AS18129 OKAYAMA NETWORK INC.	`7.36ms` from Osaka, JP
202.238.27.204	AS18129 OKAYAMA NETWORK INC.	`7.29ms` from Osaka, JP
202.238.24.3	AS18129 OKAYAMA NETWORK INC.	`7.21ms` from Osaka, JP
202.238.18.19	AS18129 OKAYAMA NETWORK INC.	`7.10ms` from Osaka, JP
202.238.20.3	AS18129 OKAYAMA NETWORK INC.	`6.85ms` from Osaka, JP
202.238.22.67	AS18129 OKAYAMA NETWORK INC.	`7.30ms` from Osaka, JP
202.238.17.179	AS18129 OKAYAMA NETWORK INC.	`7.30ms` from Osaka, JP
202.238.25.173	AS18129 OKAYAMA NETWORK INC.	`7.42ms` from Osaka, JP
202.238.19.60	AS18129 OKAYAMA NETWORK INC.	`7.28ms` from Osaka, JP
202.238.30.64	AS18129 OKAYAMA NETWORK INC.	`7.41ms` from Osaka, JP
202.238.26.238	AS18129 OKAYAMA NETWORK INC.	`7.45ms` from Osaka, JP
202.238.28.2	AS18129 OKAYAMA NETWORK INC.	`7.26ms` from Osaka, JP
202.238.16.3	AS18129 OKAYAMA NETWORK INC.	`7.12ms` from Osaka, JP
202.238.31.13	AS18129 OKAYAMA NETWORK INC.	`7.17ms` from Osaka, JP
202.238.21.73	AS18129 OKAYAMA NETWORK INC.	`7.40ms` from Osaka, JP
202.238.29.208	AS18129 OKAYAMA NETWORK INC.	`7.29ms` 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
68.184.39.20	AS20115 Charter Communications LLC	`13.66ms` from Ashburn, US
152.3.140.36	AS13371 Duke University	`11.04ms` from Atlanta, US
97.245.11.228	AS6167 Verizon Business	`15.63ms` from Atlanta, US
44.232.107.68	AS16509 Amazon.com, Inc.	`0.10ms` from Boardman, US
34.217.88.132	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
75.133.85.68	AS20115 Charter Communications LLC	`8.55ms` from Chicago, US
98.209.59.20	AS7922 Comcast Cable Communications, LLC	`10.07ms` from Flint, US
116.249.171.20	AS4134 CHINANET-BACKBONE	`13.42ms` from Guiyang, CN
47.96.34.4	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`10.73ms` from Huai'an, CN
106.54.99.132	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.92ms` from Shanghai, CN
113.44.79.100	AS55990 Huawei Cloud Service data center	`3.44ms` from Suzhou, CN
115.52.123.116	AS4837 CHINA UNICOM China169 Backbone	`6.73ms` from Zhengzhou, CN
66.57.29.84	AS11426 Charter Communications Inc	`1.22ms` from Charlotte, US
23.59.104.100	AS16625 Akamai Technologies, Inc.	`0.49ms` from Dallas, US
63.33.242.68	AS16509 Amazon.com, Inc.	`0.30ms` from Dublin, IE
13.74.22.212	AS8075 Microsoft Corporation	`0.24ms` from Dublin, IE
134.175.248.84	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.21ms` from Guangzhou, CN
23.205.150.68	AS20940 Akamai International B.V.	`0.52ms` from Hong Kong, HK
101.178.19.228	AS1221 Telstra Limited	`3.33ms` from Melbourne, AU
189.157.220.20	AS8151 UNINET	`8.46ms` from Monterrey, MX
186.3.2.20	AS27947 Telconet S.A	`0.79ms` from Quito, EC
45.79.28.84	AS63949 Akamai Connected Cloud	`0.13ms` from Richardson, US
134.185.32.20	AS54253 Oracle Corporation	`0.76ms` from Seoul, KR
203.232.234.212	AS9572 Hankuk University of Foreign Studies Computer Center	`1.37ms` from Seoul, KR
101.5.167.68	AS4538 China Education and Research Network Center	`6.82ms` 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 -f5 202.238.20.66

traceroute to 202.238.20.66 (202.238.20.66): 64 hops max, 52 byte packets

5 [] 218.100.9.227 11.538 ms

6 [AS18129] 219.111.221.6 7.528 ms

7 *

8 [AS18129] 202.238.20.66 9.878 ms

Measurement taken from

IPinfo ProbeNet in Osaka, JP

On January 19th 2026

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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