ResearchRouting table, RPKI, IRR & looking glass

AS134351 Leaseweb Japan K.K.

AS134351 (LEASEWEB-AS-AP) is registered to Leaseweb Japan K.K. in JP, through APNIC. It originates 53 prefixes in the global routing table.

51
IPv4 prefixes
2
IPv6 prefixes
21,248
IPv4 addresses
100%
RPKI valid

Who holds AS134351

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS134351
Handle
LEASEWEB-AS-AP
Organization
Leaseweb Japan K.K.
Country
JP
Registry
APNIC
ASPA
None published
WHOIS recordAPNIC
% [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:        PO Box 3646
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:  2026-08-26T00:40:00Z
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 2026-07-21
mnt-by:         MAINT-LEASEWEB-JP
last-modified:  2026-10-07T11:22:38Z
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 2026-07-21
abuse-mailbox:  abuse@jp.leaseweb.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-07-21T13:25:30Z
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

% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-US2)


What AS134351 announces

Prefixes originated by AS134351 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
51
IPv6 prefixes
2
IPv4 addresses
21,248 (83 /24s)
RPKI valid
53 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS134351
57
With an IRR route object
53 100%

Who AS134351 is reached through

The AS just before AS134351 in the paths our looking glass collectors hold, for 53 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.

Sourceas-nameMaintained by
APNICLEASEWEB-AS-APAPNIC-HM

Route objects with origin AS134351: ARIN 25 · RIPE 23 · RADB 9 · APNIC 8

as-sets that list AS134351 (4)