157.72.184.0/21

AS131932 · JR East Information Systems Company

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Summary

Country	Japan
Domain	japan-telecom.co.jp
ASN	AS131932
Registry	APNIC
ID	JEIS-NET

WHOIS Details

inetnum:        157.72.0.0 - 157.72.255.255
netname:        JEIS-NET
country:        JP
descr:          JR East Information Systems Company
admin-c:        ST67-AP
tech-c:         ST67-AP
status:         ASSIGNED PORTABLE
notify:         odn-admin@odn.ad.jp
mnt-by:         MAINT-JPNIC
mnt-irt:        IRT-JPNIC-JP
last-modified:  2015-04-22T01:18:01Z
source:         APNIC

irt:            IRT-JPNIC-JP
address:        Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda
address:        Chiyoda-ku, Tokyo 101-0047, japan
e-mail:         hostmaster@nic.ad.jp
abuse-mailbox:  hostmaster@nic.ad.jp
phone:          +81-3-5297-2311
fax-no:         +81-3-5297-2312
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
auth:           # Filtered
remarks:        hostmaster@nic.ad.jp was validated on 2024-11-27
mnt-by:         MAINT-JPNIC
last-modified:  2025-09-04T01:00:00Z
source:         APNIC

person:         Shinji Tsubakino
address:        4-7-1 Hacchobori Chuo-ku, Tokyo, 104-8508
country:        JP
phone:          +81-3-5540-8061
e-mail:         shinji.tsubakino@japan-telecom.co.jp
nic-hdl:        ST67-AP
remarks:        ----------
remarks:        imported from ARIN object:
remarks:        
remarks:        poc-handle:  ST440-ARIN
remarks:        is-role:     N
remarks:        last-name:   Tsubakino
remarks:        first-name:  Shinji
remarks:        street:      4-7-1 Hacchobori Chuo-ku, Tokyo, 104-8508
remarks:        country:     JP
remarks:        mailbox:     shinji.tsubakino@japan-telecom.co.jp
remarks:        bus-phone:   +81-3-5540-8061
remarks:        reg-date:    2000-12-04
remarks:        changed:     hostmaster@arin.poc 20030403
remarks:        source:      ARIN
remarks:        
remarks:        ----------
notify:         shinji.tsubakino@japan-telecom.co.jp
mnt-by:         MNT-ERX-JRESTJPINFSYSCOMP-NON-JP
last-modified:  2008-09-04T07:29:35Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 157.72.0.0/16

No nearby ranges found.

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

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Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
37.0.84.133	AS28685 Routit BV	`4.24ms` from Amsterdam, NL
64.132.140.213	AS3549 Level 3 Parent, LLC	`6.25ms` from Atlanta, US
73.219.115.37	AS7922 Comcast Cable Communications, LLC	`9.05ms` from Boston, US
81.240.99.149	AS5432 Proximus NV	`1.22ms` from Brussels, BE
102.184.93.165	AS24835 Vodafone Data	`15.66ms` from Cairo, EG
65.115.50.149	AS62791 DENOVO VENTURES LLC	`0.43ms` from Denver, US
103.183.8.245	AS149404 PT Cepat Multi Data	`0.47ms` from Jakarta, ID
105.247.92.5	AS36994 Vodacom	`7.31ms` from Johannesburg, ZA
195.14.93.197	AS6894 KDDI Europe Ltd	`0.70ms` from London, GB
104.129.15.181	AS36352 HostPapa	`0.33ms` from Los Angeles, US
67.203.161.133	AS54483 GeoLinks	`0.77ms` from Los Angeles, US
183.177.71.53	AS7280 Yahoo Holdings Inc.	`0.20ms` from Miami, US
179.153.195.37	AS28573 Claro NXT Telecomunicacoes Ltda	`9.85ms` from Sao Paulo, BR
125.135.231.133	AS4766 Korea Telecom	`6.50ms` from Seoul, KR
163.15.192.229	AS1659 Taiwan Academic Network (TANet) Information Center	`6.03ms` from Taichung, TW
220.210.150.149	AS2497 Internet Initiative Japan Inc.	`15.78ms` from Tokyo, JP
73.81.247.213	AS7922 Comcast Cable Communications, LLC	`8.41ms` from Ashburn, US
163.252.28.181	AS13977 Fidium	`7.45ms` from Boston, US
48.211.133.117	AS8075 Microsoft Corporation	`0.25ms` from Boydton, US
158.197.187.37	AS2607 Zdruzenie pouzivatelov Slovenskej akademickej datovej siete SANET	`7.84ms` from Bratislava, SK
69.132.195.53	AS11426 Charter Communications Inc	`7.63ms` from Charlotte, US
50.57.204.53	AS19994 Rackspace Hosting	`1.18ms` from Chicago, US
8.9.43.69	AS62728 VELOCITY, A MANAGED SERVICES COMPANY	`0.17ms` from Chicago, US
93.204.227.85	AS3320 Deutsche Telekom AG	`5.55ms` from Frankfurt am Main, DE
196.25.179.69	AS5713 Telkom SA Ltd.	`0.58ms` from Johannesburg, ZA

Traceroute

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

traceroute -a -n -q1 -m5 157.72.187.48

traceroute to 157.72.187.48 (157.72.187.48): 5 hops max, 52 byte packets

1 [AS208450] 45.136.59.1 2.94 ms

2 [AS41371] 88.151.180.149 0.423 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Aktau, KZ

On January 18th 2026

What are IP address ranges?

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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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