23.81.40.0/21

AS134351 · Leaseweb Japan K.K.

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Summary

Country	Japan
Domain	leaseweb.com
ASN	AS134351
Registry	APNIC
ID	LEASEWEB-JP

WHOIS Details

inetnum:        23.81.40.0 - 23.81.47.255
netname:        LEASEWEB-JP
descr:          Leaseweb Japan K.K.
country:        JP
org:            ORG-LJK1-AP
admin-c:        LJKA1-AP
tech-c:         LJKA1-AP
abuse-c:        AL1601-AP
status:         ALLOCATED PORTABLE
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-LEASEWEB-JP
mnt-routes:     MAINT-LEASEWEB-JP
mnt-irt:        IRT-LEASEWEB-JP
last-modified:  2022-06-27T06:10:54Z
source:         APNIC

irt:            IRT-LEASEWEB-JP
address:        201 Chambre de Nishi Azabu,, 4-14-14, Nishiazabu, Minato Ku Tokyo-To 106-0031
e-mail:         abuse@jp.leaseweb.com
abuse-mailbox:  abuse@jp.leaseweb.com
admin-c:        LJKA1-AP
tech-c:         LJKA1-AP
auth:           # Filtered
remarks:        abuse@jp.leaseweb.com was validated on 2026-01-20
mnt-by:         MAINT-LEASEWEB-JP
last-modified:  2026-01-20T13:58:28Z
source:         APNIC

organisation:   ORG-LJK1-AP
org-name:       Leaseweb Japan K.K.
org-type:       LIR
country:        JP
address:        201 Chambre de Nishi Azabu,
address:        4-14-14, Nishiazabu
phone:          +31(0)20-3165168
e-mail:         noc@network.leaseweb.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:18:07Z
source:         APNIC

role:           ABUSE LEASEWEBJP
country:        ZZ
address:        201 Chambre de Nishi Azabu,, 4-14-14, Nishiazabu, Minato Ku Tokyo-To 106-0031
phone:          +000000000
e-mail:         abuse@jp.leaseweb.com
admin-c:        LJKA1-AP
tech-c:         LJKA1-AP
nic-hdl:        AL1601-AP
remarks:        Generated from irt object IRT-LEASEWEB-JP
remarks:        abuse@jp.leaseweb.com was validated on 2026-01-20
abuse-mailbox:  abuse@jp.leaseweb.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-01-20T13:58:56Z
source:         APNIC

role:           Leaseweb Japan KK administrator
address:        201 Chambre de Nishi Azabu,, 4-14-14, Nishiazabu, Minato Ku Tokyo-To 106-0031
country:        JP
phone:          +31(0)20-3165168
e-mail:         abuse@jp.leaseweb.com
admin-c:        LJKA1-AP
tech-c:         LJKA1-AP
nic-hdl:        LJKA1-AP
mnt-by:         MAINT-LEASEWEB-JP
last-modified:  2020-03-13T00:37:25Z
source:         APNIC

route:          23.81.40.0/21
origin:         AS134351
descr:          Leaseweb Japan K.K. 201 Chambre de Nishi Azabu, 4-14-14, Nishiazabu
mnt-by:         MAINT-LEASEWEB-JP
last-modified:  2024-01-11T08:51:39Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 23.81.0.0/16

Range	ASN	Company	Num of IPs
23.81.224.0/19	AS19148	LeaseWeb USA, Inc. Pheonix	8,192
23.81.48.0/20	AS19148	LeaseWeb USA, Inc. Pheonix	4,096
23.81.128.0/21	AS19148	LeaseWeb USA, Inc. Pheonix	2,048
23.81.144.0/21	AS19148	LeaseWeb USA, Inc. Pheonix	2,048
23.81.16.0/21	AS19148	LeaseWeb USA, Inc. Pheonix	2,048
23.81.192.0/21	AS19148	LeaseWeb USA, Inc. Pheonix	2,048
23.81.120.0/21	AS19148	LeaseWeb USA, Inc. Pheonix	2,048
23.81.88.0/21	AS19148	LeaseWeb USA, Inc. Pheonix	2,048
23.81.32.0/21	AS205544	Leaseweb UK Limited	2,048
23.81.152.0/21	AS27411	LeaseWeb USA, Inc. Chicago	2,048
23.81.24.0/21	AS27411	LeaseWeb USA, Inc. Chicago	2,048
23.81.72.0/21	AS394380	Leaseweb USA, Inc.	2,048
23.81.184.0/21	AS395954	LeaseWeb USA, Inc. Los Angeles	2,048
23.81.0.0/21	AS396190	LeaseWeb USA, Inc. Seattle	2,048
23.81.136.0/21	AS396190	LeaseWeb USA, Inc. Seattle	2,048
23.81.208.0/21	AS396190	LeaseWeb USA, Inc. Seattle	2,048
23.81.64.0/21	AS396362	LeaseWeb USA, Inc. New York	2,048
23.81.104.0/21	AS7203	Leaseweb USA, Inc.	2,048
23.81.176.0/21	AS7203	Leaseweb USA, Inc.	2,048
23.81.220.0/22	AS7203	Leaseweb USA, Inc.	1,024
23.81.8.0/22	AS7203	Leaseweb USA, Inc.	1,024
23.81.100.0/22	AS7203	Leaseweb USA, Inc.	1,024
23.81.84.0/22	AS7203	Leaseweb USA, Inc.	1,024
23.81.216.0/22	AS19148	LeaseWeb USA, Inc. Pheonix	1,024
23.81.204.0/22	AS19148	LeaseWeb USA, Inc. Pheonix	1,024
23.81.172.0/22	AS19148	LeaseWeb USA, Inc. Pheonix	1,024
23.81.80.0/22	AS19148	LeaseWeb USA, Inc. Pheonix	1,024
23.81.112.0/22	AS7203	Leaseweb USA, Inc.	1,024
23.81.116.0/22	AS7203	Leaseweb USA, Inc.	1,024
23.81.12.0/22	AS7203	Leaseweb USA, Inc.	1,024
23.81.160.0/22	AS7203	Leaseweb USA, Inc.	1,024
23.81.164.0/22	AS7203	Leaseweb USA, Inc.	1,024
23.81.168.0/22	AS7203	Leaseweb USA, Inc.	1,024
23.81.96.0/22	AS7203	Leaseweb USA, Inc.	1,024
23.81.200.0/22	AS7203	Leaseweb USA, Inc.	1,024

Hosted domains

There are 12 domain names hosted across 10 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
23.81.43.17	titancontainers.jp	2
23.81.44.23	195kin.com	2
23.81.41.153	jkmarshallmercantile.com	1
23.81.41.131	xrdgames.com	1
23.81.41.24	swollows.xyz	1
23.81.45.17	plumvillage.org	1
23.81.41.134	sjsalomoninternational.com	1
23.81.40.66	kai.md	1
23.81.41.165	goolge-corp.com	1
23.81.41.137	padcloud.io	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

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

IP Address	ASN	Details
23.81.45.70	AS134351 Leaseweb Japan K.K.	`0.26ms` from Tokyo, JP
23.81.40.13	AS134351 Leaseweb Japan K.K.	`0.26ms` from Tokyo, JP
23.81.43.144	AS134351 Leaseweb Japan K.K.	`0.26ms` from Tokyo, JP
23.81.42.252	AS134351 Leaseweb Japan K.K.	`0.25ms` from Tokyo, JP
23.81.41.205	AS134351 Leaseweb Japan K.K.	`0.26ms` from Tokyo, JP
23.81.47.60	AS134351 Leaseweb Japan K.K.	`0.26ms` from Tokyo, JP
23.81.46.203	AS134351 Leaseweb Japan K.K.	`0.25ms` from Tokyo, JP
23.81.44.126	AS134351 Leaseweb Japan K.K.	`0.25ms` 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
175.35.109.181	AS4804 Microplex PTY LTD	`6.61ms` from Adelaide, AU
208.44.195.213	AS209 CenturyLink Communications, LLC	`2.05ms` from Chicago, US
74.38.1.37	AS7011 Frontier Communications of America, Inc.	`16.94ms` from Los Angeles, US
76.128.107.229	AS7922 Comcast Cable Communications, LLC	`2.49ms` from Miami, US
179.0.167.229	AS270833 DMS COMUNICACAO LTDA	`10.68ms` from Osasco, BR
189.205.62.69	AS6503 Axtel, S.A.B. de C.V.	`5.70ms` from Santiago de Queretaro, MX
62.245.42.181	AS5563 Ural Regional Net	`14.14ms` from Yekaterinburg, RU
72.5.146.37	AS10913 Unitas Global	`0.42ms` from Ashburn, US
20.115.53.117	AS8075 Microsoft Corporation	`0.43ms` from Ashburn, US
170.202.233.5	AS17166 Travelers Property Casualty Corp.	`1.32ms` from Atlanta, US
183.215.54.53	AS56047 China Mobile communications corporation	`1.40ms` from Changsha, CN
74.135.91.5	AS10796 Charter Communications Inc	`15.57ms` from Cleveland, US
76.181.211.197	AS10796 Charter Communications Inc	`18.84ms` from Columbus, US
149.19.212.5	AS396905 HomeWorks Connect	`0.61ms` from Detroit, US
87.168.143.197	AS3320 Deutsche Telekom AG	`2.86ms` from Duesseldorf, DE
117.5.205.213	AS7552 Viettel Group	`2.51ms` from Hanoi, VN
60.173.132.165	AS4134 CHINANET-BACKBONE	`8.38ms` from Huai'an, CN
211.179.160.165	AS9318 SK Broadband Co Ltd	`5.66ms` from Incheon, KR
119.152.134.165	AS17557 Pakistan Telecommunication Company Limited	`10.38ms` from Karachi, PK
188.190.180.117	AS28773 Global Technologies of Ukraine LLC	`0.82ms` from Khmelnytskyi, UA
157.231.167.165	AS31655 Gamma Telecom Holdings Ltd	`2.15ms` from London, GB
31.195.83.181	AS3269 Telecom Italia S.p.A.	`6.86ms` from Milan, IT
130.174.91.5	AS3360 DXC US Latin America Corporation	`4.67ms` from New York City, US
98.91.209.197	AS14618 Amazon.com, Inc.	`0.55ms` from Reston, US
177.54.111.53	AS52988 PLENA TELECOM	`9.82ms` from Rio de Janeiro, BR

Traceroute

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

traceroute -a -n -q1 23.81.45.252

traceroute to 23.81.45.252 (23.81.45.252): 64 hops max, 52 byte packets

1 [AS202422] 202.78.167.1 0.111 ms

2 [AS199524] 92.223.63.81 1.557 ms

3 *

4 [] 101.203.89.213 1.16 ms

5 [] 31.31.38.243 0.83 ms

6 [AS134351] 23.81.45.252 0.272 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, 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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