ASN AS38215 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS38215?

AS38215 is listed under Syuhei Uda.

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.

AS38215 Syuhei Uda | IPGeolocation.io

Syuhei Uda caledfwlch.tech

JP 3 Routes

AS Data

AS38215

AS38215 – Syuhei Uda

AS Number	38215
AS Name	SYUHEIUDA-AS-AP
Organization	Syuhei Uda (org-su9-ap)
Country	JP
Website	caledfwlch.tech
Number of IPv4 Routes	1
Number of IPv6 Routes	2
ASN type	INDIVIDUAL
Registry	APNIC
Date Allocated	N/A

ASN Intelligence API for production workflows

Use ASN data for AS38215 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
103.164.236.0/24	AS38215	Syuhei Uda	Syuhei Uda	256
2001:df6:5180::/48	AS38215	Syuhei Uda	Syuhei Uda	~1×10²⁴
2400:bf60::/32	AS38215	Syuhei Uda	Syuhei Uda	~79×10²⁷

Raw Whois Response

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

% Information related to 'AS37888 - AS38911'

as-block:       AS37888 - AS38911
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:  2009-09-29T06:04:16Z
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 'AS38166 - AS38243'

as-block:       AS38166 - AS38243
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:  2008-09-04T06:40:26Z
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 'AS38215'

% Abuse contact for 'AS38215' is 'abuse@caledfwlch.tech'

aut-num:        AS38215
as-name:        SYUHEIUDA-AS-AP
descr:          Syuhei Uda
country:        JP
org:            ORG-SU9-AP
admin-c:        SUA4-AP
tech-c:         SUA4-AP
abuse-c:        AS3111-AP
mnt-lower:      MAINT-SYUHEIUDA-JP
mnt-routes:     MAINT-SYUHEIUDA-JP
mnt-by:         APNIC-HM
mnt-irt:        IRT-SYUHEIUDA-JP
last-modified:  2021-03-25T02:44:34Z
source:         APNIC

irt:            IRT-SYUHEIUDA-JP
address:
e-mail:         abuse@caledfwlch.tech
abuse-mailbox:  abuse@caledfwlch.tech
admin-c:        SUA4-AP
tech-c:         SUA4-AP
auth:           # Filtered
remarks:        abuse@caledfwlch.tech was validated on 2025-11-23
mnt-by:         MAINT-SYUHEIUDA-JP
last-modified:  2025-11-23T07:23:50Z
source:         APNIC

organisation:   ORG-SU9-AP
org-name:       Syuhei Uda
org-type:       LIR
country:        JP
address:        3-31-9-3 Nakamachi
phone:          +818031574576
e-mail:         Syuhei@caledfwlch.tech
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2024-02-25T13:05:31Z
source:         APNIC

role:           ABUSE SYUHEIUDAJP
country:        ZZ
address:
phone:          +000000000
e-mail:         abuse@caledfwlch.tech
admin-c:        SUA4-AP
tech-c:         SUA4-AP
nic-hdl:        AS3111-AP
remarks:        Generated from irt object IRT-SYUHEIUDA-JP
remarks:        abuse@caledfwlch.tech was validated on 2025-11-23
abuse-mailbox:  abuse@caledfwlch.tech
mnt-by:         APNIC-ABUSE
last-modified:  2025-11-23T07:24:00Z
source:         APNIC

role:           Syuhei Uda administrator
address:
country:        JP
phone:          +818031574576
e-mail:         abuse@caledfwlch.tech
admin-c:        SUA4-AP
tech-c:         SUA4-AP
nic-hdl:        SUA4-AP
mnt-by:         MAINT-SYUHEIUDA-JP
last-modified:  2021-03-25T08:00:02Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-JP1)



#
# 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:       38048 - 38438
ASName:         APNIC-37888
ASHandle:       AS38048
RegDate:        2005-06-09
Updated:        2025-03-31
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/38048

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 'AS37888 - AS38911'

as-block:       AS37888 - AS38911
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:  2009-09-29T06:04:16Z
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 'AS38166 - AS38243'

as-block:       AS38166 - AS38243
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:  2008-09-04T06:40:26Z
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 'AS38215'

% Abuse contact for 'AS38215' is 'abuse@caledfwlch.tech'

aut-num:        AS38215
as-name:        SYUHEIUDA-AS-AP
descr:          Syuhei Uda
country:        JP
org:            ORG-SU9-AP
admin-c:        SUA4-AP
tech-c:         SUA4-AP
abuse-c:        AS3111-AP
mnt-lower:      MAINT-SYUHEIUDA-JP
mnt-routes:     MAINT-SYUHEIUDA-JP
mnt-by:         APNIC-HM
mnt-irt:        IRT-SYUHEIUDA-JP
last-modified:  2021-03-25T02:44:34Z
source:         APNIC

irt:            IRT-SYUHEIUDA-JP
address:
e-mail:         abuse@caledfwlch.tech
abuse-mailbox:  abuse@caledfwlch.tech
admin-c:        SUA4-AP
tech-c:         SUA4-AP
auth:           # Filtered
remarks:        abuse@caledfwlch.tech was validated on 2025-11-23
mnt-by:         MAINT-SYUHEIUDA-JP
last-modified:  2025-11-23T07:23:50Z
source:         APNIC

organisation:   ORG-SU9-AP
org-name:       Syuhei Uda
org-type:       LIR
country:        JP
address:        3-31-9-3 Nakamachi
phone:          +818031574576
e-mail:         Syuhei@caledfwlch.tech
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2024-02-25T13:05:31Z
source:         APNIC

role:           ABUSE SYUHEIUDAJP
country:        ZZ
address:
phone:          +000000000
e-mail:         abuse@caledfwlch.tech
admin-c:        SUA4-AP
tech-c:         SUA4-AP
nic-hdl:        AS3111-AP
remarks:        Generated from irt object IRT-SYUHEIUDA-JP
remarks:        abuse@caledfwlch.tech was validated on 2025-11-23
abuse-mailbox:  abuse@caledfwlch.tech
mnt-by:         APNIC-ABUSE
last-modified:  2025-11-23T07:24:00Z
source:         APNIC

role:           Syuhei Uda administrator
address:
country:        JP
phone:          +818031574576
e-mail:         abuse@caledfwlch.tech
admin-c:        SUA4-AP
tech-c:         SUA4-AP
nic-hdl:        SUA4-AP
mnt-by:         MAINT-SYUHEIUDA-JP
last-modified:  2021-03-25T08:00:02Z
source:         APNIC

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

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.apnic.net",
  "as_blocks" : [ {
    "as_block" : "AS37888 - AS38911",
    "description" : [ "APNIC ASN block" ],
    "admin_contacts" : [ "HM20-AP" ],
    "tech_contacts" : [ "HM20-AP" ],
    "remarks" : [ "These AS numbers are further assigned by APNIC", "to APNIC members and end-users in the APNIC region" ],
    "mnt_by" : [ "APNIC-HM" ],
    "mnt_lower" : [ "APNIC-HM" ],
    "date_updated" : "2009-09-29",
    "source" : "APNIC"
  }, {
    "as_block" : "AS38166 - AS38243",
    "description" : [ "APNIC ASN block" ],
    "admin_contacts" : [ "HM20-AP" ],
    "tech_contacts" : [ "HM20-AP" ],
    "remarks" : [ "These AS numbers are further assigned by APNIC", "to APNIC members and end-users in the APNIC region" ],
    "mnt_by" : [ "APNIC-HM" ],
    "mnt_lower" : [ "APNIC-HM" ],
    "date_updated" : "2008-09-04",
    "source" : "APNIC"
  }, {
    "as_block" : "AS37888 - AS38911",
    "description" : [ "APNIC ASN block" ],
    "admin_contacts" : [ "HM20-AP" ],
    "tech_contacts" : [ "HM20-AP" ],
    "remarks" : [ "These AS numbers are further assigned by APNIC", "to APNIC members and end-users in the APNIC region" ],
    "mnt_by" : [ "APNIC-HM" ],
    "mnt_lower" : [ "APNIC-HM" ],
    "date_updated" : "2009-09-29",
    "source" : "APNIC"
  }, {
    "as_block" : "AS38166 - AS38243",
    "description" : [ "APNIC ASN block" ],
    "admin_contacts" : [ "HM20-AP" ],
    "tech_contacts" : [ "HM20-AP" ],
    "remarks" : [ "These AS numbers are further assigned by APNIC", "to APNIC members and end-users in the APNIC region" ],
    "mnt_by" : [ "APNIC-HM" ],
    "mnt_lower" : [ "APNIC-HM" ],
    "date_updated" : "2008-09-04",
    "source" : "APNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS38215",
    "as_name" : "SYUHEIUDA-AS-AP",
    "description" : [ "Syuhei Uda" ],
    "country" : "JP",
    "organization" : "ORG-SU9-AP",
    "admin_contacts" : [ "SUA4-AP" ],
    "tech_contacts" : [ "SUA4-AP" ],
    "abuse_contacts" : [ "AS3111-AP" ],
    "mnt_irt" : [ "IRT-SYUHEIUDA-JP" ],
    "mnt_lower" : [ "MAINT-SYUHEIUDA-JP" ],
    "mnt_routes" : [ "MAINT-SYUHEIUDA-JP" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2021-03-25",
    "source" : "APNIC"
  }, {
    "aut_num" : "AS38215",
    "as_name" : "SYUHEIUDA-AS-AP",
    "description" : [ "Syuhei Uda" ],
    "country" : "JP",
    "organization" : "ORG-SU9-AP",
    "admin_contacts" : [ "SUA4-AP" ],
    "tech_contacts" : [ "SUA4-AP" ],
    "abuse_contacts" : [ "AS3111-AP" ],
    "mnt_irt" : [ "IRT-SYUHEIUDA-JP" ],
    "mnt_lower" : [ "MAINT-SYUHEIUDA-JP" ],
    "mnt_routes" : [ "MAINT-SYUHEIUDA-JP" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2021-03-25",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-SYUHEIUDA-JP",
    "email" : [ "abuse@caledfwlch.tech" ],
    "abuse_mailbox" : [ "abuse@caledfwlch.tech" ],
    "admin_contacts" : [ "SUA4-AP" ],
    "tech_contacts" : [ "SUA4-AP" ],
    "remarks" : [ "abuse@caledfwlch.tech was validated on 2025-11-23" ],
    "mnt_by" : [ "MAINT-SYUHEIUDA-JP" ],
    "date_updated" : "2025-11-23",
    "source" : "APNIC"
  },
  "organization" : {
    "handle" : "ORG-SU9-AP",
    "name" : "Syuhei Uda",
    "type" : "LIR",
    "address" : [ "3-31-9-3 Nakamachi" ],
    "street" : "3-31-9-3 Nakamachi",
    "country" : [ "JP" ],
    "email" : [ "Syuhei@caledfwlch.tech" ],
    "phone" : [ "+818031574576" ],
    "mnt_ref" : [ "APNIC-HM" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2024-02-25",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "SUA4-AP",
    "name" : "Syuhei Uda administrator",
    "country" : "JP",
    "email" : [ "abuse@caledfwlch.tech" ],
    "phone" : [ "+818031574576" ],
    "admin_contacts" : [ "SUA4-AP" ],
    "tech_contacts" : [ "SUA4-AP" ],
    "mnt_by" : [ "MAINT-SYUHEIUDA-JP" ],
    "date_updated" : "2021-03-25",
    "source" : "APNIC"
  } ],
  "technical_contacts" : [ {
    "handle" : "SUA4-AP",
    "name" : "Syuhei Uda administrator",
    "country" : "JP",
    "email" : [ "abuse@caledfwlch.tech" ],
    "phone" : [ "+818031574576" ],
    "admin_contacts" : [ "SUA4-AP" ],
    "tech_contacts" : [ "SUA4-AP" ],
    "mnt_by" : [ "MAINT-SYUHEIUDA-JP" ],
    "date_updated" : "2021-03-25",
    "source" : "APNIC"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AS3111-AP",
    "name" : "ABUSE SYUHEIUDAJP",
    "country" : "ZZ",
    "email" : [ "abuse@caledfwlch.tech" ],
    "abuse_mailbox" : [ "abuse@caledfwlch.tech" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "SUA4-AP" ],
    "tech_contacts" : [ "SUA4-AP" ],
    "remarks" : [ "Generated from irt object IRT-SYUHEIUDA-JP", "abuse@caledfwlch.tech was validated on 2025-11-23" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2025-11-23",
    "source" : "APNIC"
  } ]
}

Peers

AS Number	Description	Country
AS59105	Home NOC Operators Group	JP
AS59103	SoftEther Corporation	JP
AS150369	TelHi Corporation	JP

Upstreams

AS Number	Description	Country
AS59105	Home NOC Operators Group	JP
AS59103	SoftEther Corporation	JP
AS150369	TelHi Corporation	JP

ASN Lookup Tool

ASN Summary