210.172.240.0/20

AS4721 · JCOM Co., Ltd.

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Summary

Country	Japan
Domain	jcom.co.jp
ASN	AS4721
Registry	JPNIC
ID	JCN-CIDR-BLK-JP

WHOIS Details

inetnum:        210.172.240.0 - 210.172.255.255
netname:        JCN-CIDR-BLK-JP
descr:          JCOM Co., Ltd.
remarks:        Email address for spam or abuse complaints : abuse@home.ne.jp
country:        JP
admin-c:        JP00006551
tech-c:         JP00006551
last-modified:  2021-09-27T23:53:50Z
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

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

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

IP Address	ASN	Details
210.172.240.1	AS4721 JCOM Co., Ltd.	`4.30ms` from Tokyo, JP
210.172.242.25	AS4721 JCOM Co., Ltd.	`12.55ms` from Tokyo, JP
210.172.246.112	AS4721 JCOM Co., Ltd.	`13.91ms` from Tokyo, JP
210.172.254.8	AS4721 JCOM Co., Ltd.	`11.26ms` from Tokyo, JP
210.172.253.188	AS4721 JCOM Co., Ltd.	`11.51ms` from Tokyo, JP
210.172.255.223	AS4721 JCOM Co., Ltd.	`10.54ms` from Tokyo, JP
210.172.241.18	AS4721 JCOM Co., Ltd.	`14.56ms` from Tokyo, JP
210.172.245.38	AS4721 JCOM Co., Ltd.	`11.90ms` from Tokyo, JP
210.172.247.32	AS4721 JCOM Co., Ltd.	`13.07ms` from Tokyo, JP
210.172.243.7	AS4721 JCOM Co., Ltd.	`12.70ms` from Tokyo, JP
210.172.252.1	AS4721 JCOM Co., Ltd.	`2.60ms` from Tokyo, JP
210.172.244.1	AS4721 JCOM Co., Ltd.	`4.31ms` 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
216.67.75.244	AS7782 Alaska Communications Systems Group, Inc.	`18.50ms` from Anchorage, US
197.36.110.4	AS8452 TE-AS	`3.93ms` from Cairo, EG
73.168.125.196	AS7922 Comcast Cable Communications, LLC	`10.91ms` from Chicago, US
62.116.193.36	AS31027 GlobalConnect A/S	`0.82ms` from Copenhagen, DK
2.167.39.84	AS3320 Deutsche Telekom AG	`11.00ms` from Frankfurt am Main, DE
120.241.152.4	AS9808 China Mobile Communications Group Co., Ltd.	`2.73ms` from Guangzhou, CN
47.56.116.148	AS45102 Alibaba (US) Technology Co., Ltd.	`0.56ms` from Hong Kong, HK
141.109.70.212	AS14593 Space Exploration Technologies Corporation	`0.11ms` from Johannesburg, ZA
217.69.199.212	AS8359 MTS PJSC	`2.42ms` from Moscow, RU
131.206.91.4	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`13.77ms` from Osaka, JP
200.221.165.116	AS19089 Scala Data Centers	`1.01ms` from Osasco, BR
185.65.94.148	AS201730 DataSpring	`0.21ms` from Prague, CZ
218.233.140.196	AS9318 SK Broadband Co Ltd	`5.81ms` from Seoul, KR
58.146.243.20	AS9698 LG HelloVision Corp.	`5.76ms` from Seoul, KR
202.213.243.4	AS2527 Sony Network Communications Inc.	`0.55ms` from Tokyo, JP
4.180.131.132	AS8075 Microsoft Corporation	`0.25ms` from Amsterdam, NL
172.233.226.116	AS63949 Akamai Connected Cloud	`0.25ms` from Ashburn, US
201.185.134.132	AS13489 UNE EPM TELECOMUNICACIONES S.A.	`7.57ms` from Bogota, CO
24.167.239.132	AS10796 Charter Communications Inc	`5.61ms` from Chicago, US
34.56.170.132	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
222.169.201.20	AS4134 CHINANET-BACKBONE	`10.12ms` from Dalian, CN
104.102.54.52	AS16625 Akamai Technologies, Inc.	`0.32ms` from Frankfurt am Main, DE
176.55.252.4	AS15897 Vodafone Telekomunikasyon A.S.	`3.13ms` from Istanbul, TR
41.186.13.132	AS36890 MTN Rwandacell	`2.25ms` from Kigali, RW
37.139.166.20	AS25133 LLC "McLaut-Invest"	`3.06ms` from Kyiv, UA

Traceroute

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

traceroute -a -n -q1 -f3 -m16 210.172.248.162

traceroute to 210.172.248.162 (210.172.248.162): 16 hops max, 52 byte packets

3 [AS7195] 200.25.75.53 70.6 ms

4 *

5 [AS174] 154.54.28.73 78.362 ms

6 [AS174] 154.54.165.26 83.207 ms

7 [AS174] 154.54.166.58 98.727 ms

8 [AS174] 154.54.44.86 108.668 ms

9 [AS174] 154.54.42.102 108.904 ms

10 *

11 [AS174] 154.54.172.222 214.585 ms

12 [AS174] 154.18.0.101 204.171 ms

13 [AS9824] 116.214.18.33 214.531 ms

14 *

15 *

16 *

Measurement taken from

IPinfo ProbeNet in Bogota, CO

On August 22nd 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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