What is ASN AS134351?

ASN AS134351 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS134351?

AS134351 is listed under Leaseweb Japan K.K..

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS134351 Leaseweb Japan K.K. | IPGeolocation.io

Leaseweb Japan K.K. jp.leaseweb.com

JP 53 Routes

AS Data

AS134351

AS134351 – Leaseweb Japan K.K.

AS Number	134351
AS Name	LEASEWEB-AS-AP
Organization	Leaseweb Japan K.K.(org-ljk1-ap)
Country	JP
Website	jp.leaseweb.com
Number of IPv4 Routes	51
Number of IPv6 Routes	2
ASN type	ISP
Registry	APNIC
Date Allocated	N/A

ASN Intelligence API for production workflows

Use ASN data for AS134351 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
142.91.104.0/23	AS134351	Leaseweb Japan K.K.	Leaseweb Japan K.K.	512
46.202.255.0/24	AS134351	Leaseweb Japan K.K.	Leaseweb Japan K.K.	256
108.165.83.0/24	AS134351	Leaseweb Japan K.K.	Ace Data Centers, Inc.	256
23.27.243.0/24	AS134351	Leaseweb Japan K.K.	Ace Data Centers II, L.L.C.	256
194.127.177.0/24	AS134351	Leaseweb Japan K.K.	Extra Consult SRL	256
23.81.40.0/21	AS134351	Leaseweb Japan K.K.	Leaseweb Japan K.K.	2048
142.111.67.0/24	AS134351	Leaseweb Japan K.K.	Ace Data Centers II, L.L.C.	256
23.26.44.0/22	AS134351	Leaseweb Japan K.K.	Ace Data Centers, Inc.	1024
23.27.23.0/24	AS134351	Leaseweb Japan K.K.	Ace Data Centers II, L.L.C.	256
195.40.122.0/23	AS134351	Leaseweb Japan K.K.	Code200 UAB	512

Raw Whois Response

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS133632 - AS134556'

as-block:       AS133632 - AS134556
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2014-09-03T01:31:49Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS134351'

% Abuse contact for 'AS134351' is 'abuse@jp.leaseweb.com'

aut-num:        AS134351
as-name:        LEASEWEB-AS-AP
descr:          Leaseweb Japan K.K.
country:        JP
org:            ORG-LJK1-AP
admin-c:        LJKA1-AP
tech-c:         LJKA1-AP
abuse-c:        AL1601-AP
mnt-lower:      MAINT-LEASEWEB-JP
mnt-routes:     MAINT-LEASEWEB-JP
mnt-by:         APNIC-HM
mnt-irt:        IRT-LEASEWEB-JP
last-modified:  2020-10-14T10:04:02Z
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

% Information related to 'AS133632 - AS134556'

as-block:       AS133632 - AS134556
descr:          APNIC ASN block
admin-c:        IA55-AP
tech-c:         IH123-AP
mnt-by:         MNT-APJII-ID
mnt-lower:      MNT-APJII-ID
last-modified:  2026-02-16T13:21:12Z
source:         IDNIC

role:           ID-NIC ADMINISTRATORS
address:        Indonesian Network Information Center
address:        ID-NIC
address:        Cyber Building 11th Floor
address:        Jakarta 12710
country:        ID
phone:          +62-21-52960634
fax-no:         +62-21-52960635
e-mail:         hostmaster@idnic.net
admin-c:        IH288-AP
tech-c:         IH288-AP
nic-hdl:        IA55-AP
notify:         hostmaster@idnic.net
mnt-by:         MNT-APJII-ID
last-modified:  2026-02-25T04:06:45Z
source:         IDNIC

role:           ID-NIC HOSTMASTERS
address:        Indonesian Network Information Center
address:        ID-NIC
address:        Cyber Building 11th Floor
address:        Jakarta 12710
country:        ID
phone:          +62-21-52960634
fax-no:         +62-21-52960635
e-mail:         hostmaster@idnic.net
remarks:        spam and abuse report : abuse@apjii.or.id
remarks:        technical and routing : support@apjii.or.id
remarks:        administrative request : admin@apjii.or.id
remarks:        IDNIC hostmasters role object
admin-c:        IH1-AP
tech-c:         IH1-AP
nic-hdl:        IH123-AP
notify:         hostmaster@idnic.net
mnt-by:         MNT-APJII-ID
last-modified:  2024-07-10T05:48:59Z
source:         IDNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-US2)



#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       132575 - 138453
ASName:         APNIC-ASBLOCK-132575
ASHandle:       AS132575
RegDate:        2006-11-29
Updated:        2024-09-03
Comment:        These AS numbers are not registered in the ARIN database.
Comment:        For details, refer to the APNIC Whois Database via
Comment:        WHOIS.APNIC.NET or http://wq.apnic.net/apnic-bin/whois.pl    
Ref:            https://rdap.arin.net/registry/autnum/132575

ResourceLink:  https://apps.db.ripe.net/db-web-ui/query
ResourceLink:  whois.apnic.net


OrgName:        Asia Pacific Network Information Centre
OrgId:          APNIC
Address:        PO Box 3646
City:           South Brisbane
StateProv:      QLD
PostalCode:     4101
Country:        AU
RegDate:        
Updated:        2012-01-24
Ref:            https://rdap.arin.net/registry/entity/APNIC

ReferralServer:  whois://whois.apnic.net
ResourceLink:  http://wq.apnic.net/whois-search/static/search.html

OrgAbuseHandle: AWC12-ARIN
OrgAbuseName:   APNIC Whois Contact
OrgAbusePhone:  +61 7 3858 3188 
OrgAbuseEmail:  search-apnic-not-arin@apnic.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/AWC12-ARIN

OrgTechHandle: AWC12-ARIN
OrgTechName:   APNIC Whois Contact
OrgTechPhone:  +61 7 3858 3188 
OrgTechEmail:  search-apnic-not-arin@apnic.net
OrgTechRef:    https://rdap.arin.net/registry/entity/AWC12-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

[ JPNIC database provides information regarding IP address and ASN. Its use   ]
[ is restricted to network administration purposes. For further information,  ]
[ use 'whois -h whois.nic.ad.jp help'. To only display English output,        ]
[ add '/e' at the end of command, e.g. 'whois -h whois.nic.ad.jp xxx/e'.      ]

No match!!

Reference: WHOIS servers of RIRs
  APNIC WHOIS(whois.apnic.net)
  ARIN WHOIS(whois.arin.net)
  RIPE WHOIS(apps.db.ripe.net)
  LACNIC WHOIS(whois.lacnic.net)
  AfriNIC WHOIS(whois.afrinic.net)
% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS133632 - AS134556'

as-block:       AS133632 - AS134556
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2014-09-03T01:31:49Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS134351'

% Abuse contact for 'AS134351' is 'abuse@jp.leaseweb.com'

aut-num:        AS134351
as-name:        LEASEWEB-AS-AP
descr:          Leaseweb Japan K.K.
country:        JP
org:            ORG-LJK1-AP
admin-c:        LJKA1-AP
tech-c:         LJKA1-AP
abuse-c:        AL1601-AP
mnt-lower:      MAINT-LEASEWEB-JP
mnt-routes:     MAINT-LEASEWEB-JP
mnt-by:         APNIC-HM
mnt-irt:        IRT-LEASEWEB-JP
last-modified:  2020-10-14T10:04:02Z
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

% Information related to 'AS133632 - AS134556'

as-block:       AS133632 - AS134556
descr:          APNIC ASN block
admin-c:        IA55-AP
tech-c:         IH123-AP
mnt-by:         MNT-APJII-ID
mnt-lower:      MNT-APJII-ID
last-modified:  2026-02-16T13:21:12Z
source:         IDNIC

role:           ID-NIC ADMINISTRATORS
address:        Indonesian Network Information Center
address:        ID-NIC
address:        Cyber Building 11th Floor
address:        Jakarta 12710
country:        ID
phone:          +62-21-52960634
fax-no:         +62-21-52960635
e-mail:         hostmaster@idnic.net
admin-c:        IH288-AP
tech-c:         IH288-AP
nic-hdl:        IA55-AP
notify:         hostmaster@idnic.net
mnt-by:         MNT-APJII-ID
last-modified:  2026-02-25T04:06:45Z
source:         IDNIC

role:           ID-NIC HOSTMASTERS
address:        Indonesian Network Information Center
address:        ID-NIC
address:        Cyber Building 11th Floor
address:        Jakarta 12710
country:        ID
phone:          +62-21-52960634
fax-no:         +62-21-52960635
e-mail:         hostmaster@idnic.net
remarks:        spam and abuse report : abuse@apjii.or.id
remarks:        technical and routing : support@apjii.or.id
remarks:        administrative request : admin@apjii.or.id
remarks:        IDNIC hostmasters role object
admin-c:        IH1-AP
tech-c:         IH1-AP
nic-hdl:        IH123-AP
notify:         hostmaster@idnic.net
mnt-by:         MNT-APJII-ID
last-modified:  2024-07-10T05:48:59Z
source:         IDNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-US2)

Parsed Whois Response

Peers

AS Number	Description	Country
AS6453	TATA COMMUNICATIONS AMERICA INC	US
AS2914	NTT America, Inc.	US
AS4637	Telstra International Limited	HK
AS4637	Telstra Global	HK
AS174	Cogent Communications, LLC	US
AS6453	TATA COMMUNICATIONS (AMERICA) INC	US
AS16265	LeaseWeb Network B.V.	NL

Upstreams

AS Number	Description	Country
AS6453	TATA COMMUNICATIONS AMERICA INC	US
AS2914	NTT America, Inc.	US
AS4637	Telstra International Limited	HK
AS174	Cogent Communications, LLC	US
AS16265	LeaseWeb Network B.V.	NL