What is ASN AS138181?

ASN AS138181 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS138181?

AS138181 is listed under Hu's Tech LLC.

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?

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AS138181 Hu's Tech LLC | IPGeolocation.io

Hu's Tech LLC catnetworks.co.jp

JP 2 Routes

AS Data

AS138181

AS138181 – Hu's Tech LLC

AS Number	138181
AS Name	HEXHU
Organization	Hu's Tech LLC(org-cnk1-ap)
Country	JP
Website	catnetworks.co.jp
Number of IPv4 Routes	0
Number of IPv6 Routes	2
ASN type	ISP
Registry	APNIC
Date Allocated	N/A

ASN Intelligence API for production workflows

Use ASN data for AS138181 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2602:feda:ae2::/47	AS138181	Cat Networks K.K.	Hu's Tech LLC	~2×10²⁴
2602:feda:ae3::/48	AS138181	Cat Networks K.K.	Hu's Tech LLC	~1×10²⁴

Raw Whois Response

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

% Information related to 'AS137530 - AS138553'

as-block:       AS137530 - AS138553
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 'AS138181'

% Abuse contact for 'AS138181' is 'abuse@hexhu.net'

aut-num:        AS138181
as-name:        HEXHU
descr:          Hu's Tech LLC
descr:          TRC Bldg., C-tower, B-block, 4F 6-5-2
descr:          Heiwajima, Tokyo 143-0006
country:        JP
org:            ORG-CNK1-AP
admin-c:        HA306-AP
tech-c:         HA306-AP
abuse-c:        AH937-AP
mnt-routes:     MAINT-CAT-JP
mnt-by:         APNIC-HM
mnt-irt:        IRT-HEXHU-AP
last-modified:  2022-03-17T01:39:28Z
source:         APNIC

irt:            IRT-HEXHU-AP
address:        235 Beckman Lawn
address:        Pasadena
address:        CA 91125
e-mail:         i@hexhu.net
abuse-mailbox:  abuse@hexhu.net
admin-c:        HA306-AP
tech-c:         HA306-AP
auth:           # Filtered
remarks:        i@hexhu.net was validated on 2026-01-07
remarks:        abuse@hexhu.net was validated on 2026-01-07
mnt-by:         MAINT-CAT-HK
last-modified:  2026-01-07T18:17:01Z
source:         APNIC

organisation:   ORG-CNK1-AP
org-name:       Cat Networks K.K.
org-type:       LIR
country:        JP
address:        6-Chome 7-2 Nishitenma
address:        Kita-ku
phone:          +81-669499281
fax-no:         +81-669499282
e-mail:         info@catnetworks.co.jp
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:17:12Z
source:         APNIC

role:           ABUSE HEXHUAP
country:        ZZ
address:        235 Beckman Lawn
address:        Pasadena
address:        CA 91125
phone:          +000000000
e-mail:         i@hexhu.net
admin-c:        HA306-AP
tech-c:         HA306-AP
nic-hdl:        AH937-AP
remarks:        Generated from irt object IRT-HEXHU-AP
remarks:        i@hexhu.net was validated on 2026-01-07
remarks:        abuse@hexhu.net was validated on 2026-01-07
abuse-mailbox:  abuse@hexhu.net
mnt-by:         APNIC-ABUSE
last-modified:  2026-01-07T18:17:19Z
source:         APNIC

role:           Hexhu Adminstrator
address:        235 Beckman Lawn, Pasadena, CA 91125
country:        US
phone:          +1(307)206-5615
e-mail:         i@hexhu.net
admin-c:        HA305-AP
tech-c:         HA305-AP
nic-hdl:        HA306-AP
mnt-by:         MAINT-CAT-HK
abuse-mailbox:  abuse@hexhu.net
last-modified:  2018-09-06T12:16:39Z
source:         APNIC

% Information related to 'AS137530 - AS138553'

as-block:       AS137530 - AS138553
descr:          APNIC ASN block
admin-c:        IA55-AP
tech-c:         IH123-AP
mnt-by:         MNT-APJII-ID
mnt-lower:      MNT-APJII-ID
last-modified:  2026-02-16T12:29:14Z
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 'AS137530 - AS138553'

as-block:       AS137530 - AS138553
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 'AS138181'

% Abuse contact for 'AS138181' is 'abuse@hexhu.net'

aut-num:        AS138181
as-name:        HEXHU
descr:          Hu's Tech LLC
descr:          TRC Bldg., C-tower, B-block, 4F 6-5-2
descr:          Heiwajima, Tokyo 143-0006
country:        JP
org:            ORG-CNK1-AP
admin-c:        HA306-AP
tech-c:         HA306-AP
abuse-c:        AH937-AP
mnt-routes:     MAINT-CAT-JP
mnt-by:         APNIC-HM
mnt-irt:        IRT-HEXHU-AP
last-modified:  2022-03-17T01:39:28Z
source:         APNIC

irt:            IRT-HEXHU-AP
address:        235 Beckman Lawn
address:        Pasadena
address:        CA 91125
e-mail:         i@hexhu.net
abuse-mailbox:  abuse@hexhu.net
admin-c:        HA306-AP
tech-c:         HA306-AP
auth:           # Filtered
remarks:        i@hexhu.net was validated on 2026-01-07
remarks:        abuse@hexhu.net was validated on 2026-01-07
mnt-by:         MAINT-CAT-HK
last-modified:  2026-01-07T18:17:01Z
source:         APNIC

organisation:   ORG-CNK1-AP
org-name:       Cat Networks K.K.
org-type:       LIR
country:        JP
address:        6-Chome 7-2 Nishitenma
address:        Kita-ku
phone:          +81-669499281
fax-no:         +81-669499282
e-mail:         info@catnetworks.co.jp
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:17:12Z
source:         APNIC

role:           ABUSE HEXHUAP
country:        ZZ
address:        235 Beckman Lawn
address:        Pasadena
address:        CA 91125
phone:          +000000000
e-mail:         i@hexhu.net
admin-c:        HA306-AP
tech-c:         HA306-AP
nic-hdl:        AH937-AP
remarks:        Generated from irt object IRT-HEXHU-AP
remarks:        i@hexhu.net was validated on 2026-01-07
remarks:        abuse@hexhu.net was validated on 2026-01-07
abuse-mailbox:  abuse@hexhu.net
mnt-by:         APNIC-ABUSE
last-modified:  2026-01-07T18:17:19Z
source:         APNIC

role:           Hexhu Adminstrator
address:        235 Beckman Lawn, Pasadena, CA 91125
country:        US
phone:          +1(307)206-5615
e-mail:         i@hexhu.net
admin-c:        HA305-AP
tech-c:         HA305-AP
nic-hdl:        HA306-AP
mnt-by:         MAINT-CAT-HK
abuse-mailbox:  abuse@hexhu.net
last-modified:  2018-09-06T12:16:39Z
source:         APNIC

% Information related to 'AS137530 - AS138553'

as-block:       AS137530 - AS138553
descr:          APNIC ASN block
admin-c:        IA55-AP
tech-c:         IH123-AP
mnt-by:         MNT-APJII-ID
mnt-lower:      MNT-APJII-ID
last-modified:  2026-02-16T12:29:14Z
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-SG1)

Parsed Whois Response

Peers

AS Number	Description	Country
AS1029	Black Mesa Corporation	US
AS6939	Hurricane Electric LLC	US

Upstreams

AS Number	Description	Country
AS1029	Black Mesa Corporation	US
AS6939	Hurricane Electric LLC	US

Contacts

Email Contacts

hostmaster@idnic.net

Abuse Contacts

abuse@hexhu.net

ASN Lookup Tool

ASN Summary