ASN Lookup Tool

U NEXT Co.,Ltd. unext.jp JP JP 2 Routes

AS Data

AS139255

AS139255 – U NEXT Co.,Ltd.

AS Number 139255
AS Name U-NEXT-AS-AP
Organization U NEXT Co.,Ltd.(org-uc3-ap)
Country JP
Website unext.jp
Number of IPv4 Routes 2
Number of IPv6 Routes 0
ASN type BUSINESS
Registry APNIC
Date Allocated N/A

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Use ASN data for AS139255 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
103.140.113.0/24 256
103.140.112.0/24 256

Raw Whois Response

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

% Information related to 'AS138554 - AS139577'

as-block:       AS138554 - AS139577
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:  2017-12-08T06:45:58Z
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 'AS139255'

% Abuse contact for 'AS139255' is 'inet-infra@unext.jp'

aut-num:        AS139255
as-name:        U-NEXT-AS-AP
descr:          U-NEXT Co.,Ltd.
country:        JP
org:            ORG-UC3-AP
admin-c:        UCA7-AP
tech-c:         UCA7-AP
abuse-c:        AU268-AP
mnt-lower:      MAINT-U-NEXT-JP
mnt-routes:     MAINT-U-NEXT-JP
mnt-by:         APNIC-HM
mnt-irt:        IRT-U-NEXT-JP
last-modified:  2021-01-19T02:55:12Z
source:         APNIC

irt:            IRT-U-NEXT-JP
address:        MEGURO CENTRAL SQUARE, 3-1-1 Kamiosaki, Shinagawa Tokyo 141-0021
e-mail:         inet-infra@unext.jp
abuse-mailbox:  inet-infra@unext.jp
admin-c:        UCA7-AP
tech-c:         UCA7-AP
auth:           # Filtered
remarks:        inet-infra@unext.jp is invalid
mnt-by:         MAINT-U-NEXT-JP
last-modified:  2025-11-18T00:33:08Z
source:         APNIC

organisation:   ORG-UC3-AP
org-name:       U-NEXT Co.,Ltd.
org-type:       LIR
country:        JP
address:        MEGURO CENTRAL SQUARE
address:        3-1-1 Kamiosaki
phone:          +81367414431
e-mail:         inet-infra@unext.jp
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:17:52Z
source:         APNIC

role:           ABUSE UNEXTJP
country:        ZZ
address:        MEGURO CENTRAL SQUARE, 3-1-1 Kamiosaki, Shinagawa Tokyo 141-0021
phone:          +000000000
e-mail:         inet-infra@unext.jp
admin-c:        UCA7-AP
tech-c:         UCA7-AP
nic-hdl:        AU268-AP
remarks:        Generated from irt object IRT-U-NEXT-JP
remarks:        inet-infra@unext.jp is invalid
abuse-mailbox:  inet-infra@unext.jp
mnt-by:         APNIC-ABUSE
last-modified:  2025-07-09T13:08:32Z
source:         APNIC

role:           U-NEXT CoLtd administrator
address:        MEGURO CENTRAL SQUARE, 3-1-1 Kamiosaki, Shinagawa Tokyo 141-0021
country:        JP
phone:          +81367414431
e-mail:         inet-infra@unext.jp
admin-c:        UCA7-AP
tech-c:         UCA7-AP
nic-hdl:        UCA7-AP
mnt-by:         MAINT-U-NEXT-JP
last-modified:  2019-06-25T05:44:50Z
source:         APNIC

% Information related to 'AS138554 - AS139577'

as-block:       AS138554 - AS139577
descr:          APNIC ASN block
admin-c:        IA55-AP
tech-c:         IH123-AP
mnt-by:         MNT-APJII-ID
mnt-lower:      MNT-APJII-ID
last-modified:  2026-02-16T10:38:45Z
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-UK2)



#
# 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:       138455 - 139577
ASName:         APNIC-ASBLOCK-132575
ASHandle:       AS138455
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/138455

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

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

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


#
# 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 'AS138554 - AS139577'

as-block:       AS138554 - AS139577
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:  2017-12-08T06:45:58Z
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 'AS139255'

% Abuse contact for 'AS139255' is 'inet-infra@unext.jp'

aut-num:        AS139255
as-name:        U-NEXT-AS-AP
descr:          U-NEXT Co.,Ltd.
country:        JP
org:            ORG-UC3-AP
admin-c:        UCA7-AP
tech-c:         UCA7-AP
abuse-c:        AU268-AP
mnt-lower:      MAINT-U-NEXT-JP
mnt-routes:     MAINT-U-NEXT-JP
mnt-by:         APNIC-HM
mnt-irt:        IRT-U-NEXT-JP
last-modified:  2021-01-19T02:55:12Z
source:         APNIC

irt:            IRT-U-NEXT-JP
address:        MEGURO CENTRAL SQUARE, 3-1-1 Kamiosaki, Shinagawa Tokyo 141-0021
e-mail:         inet-infra@unext.jp
abuse-mailbox:  inet-infra@unext.jp
admin-c:        UCA7-AP
tech-c:         UCA7-AP
auth:           # Filtered
remarks:        inet-infra@unext.jp is invalid
mnt-by:         MAINT-U-NEXT-JP
last-modified:  2025-11-18T00:33:08Z
source:         APNIC

organisation:   ORG-UC3-AP
org-name:       U-NEXT Co.,Ltd.
org-type:       LIR
country:        JP
address:        MEGURO CENTRAL SQUARE
address:        3-1-1 Kamiosaki
phone:          +81367414431
e-mail:         inet-infra@unext.jp
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:17:52Z
source:         APNIC

role:           ABUSE UNEXTJP
country:        ZZ
address:        MEGURO CENTRAL SQUARE, 3-1-1 Kamiosaki, Shinagawa Tokyo 141-0021
phone:          +000000000
e-mail:         inet-infra@unext.jp
admin-c:        UCA7-AP
tech-c:         UCA7-AP
nic-hdl:        AU268-AP
remarks:        Generated from irt object IRT-U-NEXT-JP
remarks:        inet-infra@unext.jp is invalid
abuse-mailbox:  inet-infra@unext.jp
mnt-by:         APNIC-ABUSE
last-modified:  2025-07-09T13:08:32Z
source:         APNIC

role:           U-NEXT CoLtd administrator
address:        MEGURO CENTRAL SQUARE, 3-1-1 Kamiosaki, Shinagawa Tokyo 141-0021
country:        JP
phone:          +81367414431
e-mail:         inet-infra@unext.jp
admin-c:        UCA7-AP
tech-c:         UCA7-AP
nic-hdl:        UCA7-AP
mnt-by:         MAINT-U-NEXT-JP
last-modified:  2019-06-25T05:44:50Z
source:         APNIC

% Information related to 'AS138554 - AS139577'

as-block:       AS138554 - AS139577
descr:          APNIC ASN block
admin-c:        IA55-AP
tech-c:         IH123-AP
mnt-by:         MNT-APJII-ID
mnt-lower:      MNT-APJII-ID
last-modified:  2026-02-16T10:38:45Z
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-UK2)

Parsed Whois Response

Peers

AS Number Description Country
AS2497 Internet Initiative Japan Inc. JP

Upstreams

AS Number Description Country
AS2497 Internet Initiative Japan Inc. JP

Contacts

Email Contacts

inet-infra@unext.jp hostmaster@idnic.net

Abuse Contacts

inet-infra@unext.jp

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Frequently Asked Questions

ASN AS139255 is an Autonomous System Number used to identify a network for BGP internet routing.
AS139255 is listed under U NEXT Co.,Ltd..
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.