203.139.240.0/20

AS2497 · Internet Initiative Japan Inc.

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Summary

Country	Japan
Domain	ejworks.com
ASN	AS2497
Registry	JPNIC
ID	NEWINFOPEPPER-CIDR-BLK-JP

WHOIS Details

inetnum:        203.139.240.0 - 203.139.255.255
netname:        NEWinfoPepper-CIDR-BLK-JP
descr:          EJWORKS CORPORATION
remarks:        Email address for spam or abuse complaints : [email protected]
country:        JP
admin-c:        NT16518JP
tech-c:         NT16518JP
last-modified:  2015-05-28T23:35:03Z
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

Nearby Ranges

BGP prefixes that overlap with 203.139.0.0/16

Range	ASN	Company	Num of IPs
203.139.144.0/20	AS4711	INTEC Inc.	4,096
203.139.128.0/20	AS7505	FUJITSU LIMITED	4,096

Hosted domains

There are 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.139.240.40	ejapi.info	1
203.139.248.60	nesnet.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

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

IP Address	ASN	Details
203.139.240.2	AS2497 Internet Initiative Japan Inc.	`1.27ms` from Tokyo, JP
203.139.255.253	AS2497 Internet Initiative Japan Inc.	`1.22ms` from Tokyo, 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
195.229.199.4	AS5384 Emirates Internet	`3.12ms` from Al Fujairah City, AE
71.179.205.52	AS701 Verizon Business	`5.50ms` from Ashburn, US
205.223.125.4	AS13698 Shaw Industries Group, Inc.	`4.00ms` from Atlanta, US
68.57.115.132	AS7922 Comcast Cable Communications, LLC	`18.43ms` from Atlanta, US
94.124.4.20	AS42927 S-NET Sp. z o.o.	`5.17ms` from Brno, CZ
52.189.16.180	AS8075 Microsoft Corporation	`0.20ms` from Des Moines, US
162.19.240.196	AS16276 OVH SAS	`0.10ms` from Frankfurt am Main, DE
94.72.191.20	AS15943 wilhelm.tel GmbH	`0.48ms` from Hamburg, DE
14.227.227.4	AS45899 VNPT Corp	`5.43ms` from Ho Chi Minh City, VN
50.228.10.244	AS33662 Comcast Cable Communications, LLC	`4.63ms` from Houston, US
77.227.52.196	AS12430 VODAFONE ESPANA S.A.U.	`2.03ms` from Madrid, ES
122.243.235.52	AS4134 CHINANET-BACKBONE	`7.96ms` from Nanchang, CN
60.96.200.196	AS17676 SoftBank Corp.	`3.90ms` from Osaka, JP
200.152.121.164	AS21571 MLS Wireless S/A	`1.05ms` from Rio de Janeiro, BR
148.135.197.52	AS21859 Zenlayer Inc	`0.69ms` from Singapore, SG
37.2.186.132	AS1257 Tele2 Sverige AB	`0.63ms` from Stockholm, SE
13.51.115.228	AS16509 Amazon.com, Inc.	`0.12ms` from Stockholm, SE
216.158.244.4	AS33152 Kit Carson Electric Cooperative, Inc	`0.68ms` from Taos, US
194.166.222.100	AS8447 A1 Telekom Austria AG	`10.43ms` from Vienna, AT
91.176.136.4	AS5432 Proximus NV	`1.68ms` from Brussels, BE
173.31.100.228	AS30036 Mediacom Communications Corp	`7.46ms` from Chicago, US
24.13.119.196	AS7922 Comcast Cable Communications, LLC	`5.47ms` from Chicago, US
78.43.58.68	AS3209 Vodafone GmbH	`11.78ms` from Frankfurt am Main, DE
91.12.127.212	AS3320 Deutsche Telekom AG	`4.45ms` from Frankfurt am Main, DE
121.41.61.84	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`3.91ms` from Hangzhou, 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 203.139.255.251

traceroute to 203.139.255.251 (203.139.255.251): 64 hops max, 52 byte packets

5 [AS3356] 171.75.9.125 12.433 ms

6 [AS2497] 210.130.133.58 11.645 ms

7 [AS2497] 58.138.83.174 171.969 ms

8 [AS2497] 58.138.88.141 255.495 ms

9 [AS2497] 58.138.104.250 248.59 ms

10 [AS2497] 203.139.255.251 249.031 ms

Measurement taken from

IPinfo ProbeNet in Lille, FR

On December 28th 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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