218.219.88.0/21

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:        218.219.88.0 - 218.219.95.255
netname:        JCN-CIDR-BLK-JP
descr:          JCOM Co., Ltd.
remarks:        Email address for spam or abuse complaints : [email protected]
country:        JP
admin-c:        JP00006551
tech-c:         JP00006551
last-modified:  2021-09-28T00:04:56Z
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 218.219.0.0/16

Range	ASN	Company	Num of IPs
218.219.0.0/18	AS10010	TOKAI Communications Corporation	16,384
218.219.192.0/18	AS4685	Asahi Net	16,384
218.219.160.0/19	AS17961	mitene internet co.,ltd.	8,192
218.219.96.0/19	AS7679	QTnet,Inc.	8,192
218.219.32.0/20	AS10010	TOKAI Communications Corporation	4,096
218.219.64.0/20	AS15830	Equinix Japan Enterprise K.K.	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

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

IP Address	ASN	Details
218.219.92.1	AS4721 JCOM Co., Ltd.	`3.96ms` from Tokyo, JP
218.219.93.94	AS4721 JCOM Co., Ltd.	`10.10ms` from Tokyo, JP
218.219.94.148	AS4721 JCOM Co., Ltd.	`12.81ms` from Tokyo, JP
218.219.95.37	AS4721 JCOM Co., Ltd.	`13.88ms` 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
84.35.148.229	AS21221 Infopact Netwerkdiensten B.V.	`0.79ms` from Amsterdam, NL
201.177.147.101	AS22927 Telefonica de Argentina	`2.08ms` from Buenos Aires, AR
197.162.115.197	AS24863 Link Egypt (Link.NET)	`8.90ms` from Cairo, EG
98.11.38.229	AS11351 Charter Communications Inc	`19.20ms` from Chicago, US
201.101.33.21	AS8151 UNINET	`14.96ms` from Dallas, US
62.52.49.213	AS6805 Telefonica Germany GmbH & Co.OHG	`0.41ms` from Frankfurt am Main, DE
20.2.205.149	AS8075 Microsoft Corporation	`0.34ms` from Hong Kong, HK
34.100.74.133	AS396982 Google LLC	`1.01ms` from Los Angeles, US
207.66.191.37	AS4258 Accretive Networks	`0.69ms` from Miami, US
31.188.170.37	AS24608 WIND TRE S.P.A.	`5.63ms` from Milan, IT
85.12.149.85	AS8487 Phibee Telecom SAS	`0.45ms` from Paris, FR
94.242.78.37	AS30764 PODA a.s.	`5.75ms` from Prague, CZ
3.107.15.181	AS16509 Amazon.com, Inc.	`0.74ms` from Sydney, AU
216.223.97.5	AS11522 Greater Sudbury Telecommunications Inc.	`8.47ms` from Toronto, CA
86.56.185.69	AS12605 LIWEST Kabelmedien GmbH	`4.55ms` from Vienna, AT
3.230.51.37	AS14618 Amazon.com, Inc.	`0.54ms` from Ashburn, US
206.188.198.69	AS19871 Network Solutions, LLC	`0.45ms` from Atlanta, US
109.245.215.117	AS15958 CETINdoo-NET	`1.00ms` from Belgrade, RS
99.53.196.53	AS7018 AT&T Enterprises, LLC	`7.94ms` from Chicago, US
62.243.255.101	AS3292 TDC Holding A/S	`0.73ms` from Copenhagen, DK
65.26.97.213	AS11427 Charter Communications Inc	`16.82ms` from Dallas, US
205.221.255.5	AS6122 Iowa Communications Network	`2.21ms` from Des Moines, US
87.152.229.133	AS3320 Deutsche Telekom AG	`3.48ms` from Duesseldorf, DE
194.66.206.5	AS786 Jisc Services Limited	`4.40ms` from London, GB
134.69.35.133	AS14486 Occidental College	`1.66ms` from Los Angeles, US

Traceroute

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

traceroute -a -n -q1 -m5 218.219.91.5

traceroute to 218.219.91.5 (218.219.91.5): 5 hops max, 52 byte packets

1 [AS21554] 38.39.182.125 28.553 ms

2 [AS21554] 66.185.29.145 55.141 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Milwaukee, US

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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