ASN AS58525 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS58525?

AS58525 is listed under Yahoo Inc..

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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AS58525 Yahoo Inc. | IPGeolocation.io

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Yahoo Inc. yahooinc.com

JP 0 Routes

AS Data

AS58525

AS58525 – Yahoo Inc.

AS Number	58525
AS Name	YAHOO-CORP-TOK3
Organization	Yahoo Inc. (org-ya6-ap)
Country	JP
Website	yahooinc.com
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	APNIC
Date Allocated	N/A

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Raw Whois Response

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

% Information related to 'AS58368 - AS59391'

as-block:       AS58368 - AS59391
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:  2011-08-10T06:21:41Z
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 'AS58525'

% Abuse contact for 'AS58525' is 'rir-abuse@yahooinc.com'

aut-num:        AS58525
as-name:        YAHOO-CORP-TOK3
descr:          Yahoo! Tokyo office
country:        JP
org:            ORG-YA6-AP
admin-c:        YI12-AP
tech-c:         YI12-AP
abuse-c:        AY527-AP
mnt-lower:      MAINT-AP-YAHOO-INC
mnt-routes:     MAINT-AP-YAHOO-INC
mnt-by:         APNIC-HM
mnt-irt:        IRT-YAHOO-AP
last-modified:  2021-01-11T00:24:37Z
source:         APNIC

irt:            IRT-YAHOO-AP
address:        701 First Avenue
address:        Sunnyvale, CA 94089
e-mail:         rir-admin@yahooinc.com
abuse-mailbox:  rir-abuse@yahooinc.com
admin-c:        YI12-AP
tech-c:         YI12-AP
auth:           # Filtered
remarks:        rir-admin@yahooinc.com was validated on 2026-04-03
remarks:        rir-abuse@yahooinc.com was validated on 2026-04-03
mnt-by:         MAINT-AP-YAHOO-INC
last-modified:  2026-04-03T21:28:03Z
source:         APNIC

organisation:   ORG-YA6-AP
org-name:       Yahoo Inc.
org-type:       LIR
country:        US
address:        770 Broadway
phone:          +65-6809-8000
fax-no:         +1-214-478-6657
e-mail:         rir-admin@yahooinc.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:52Z
source:         APNIC

role:           ABUSE YAHOOAP
country:        ZZ
address:        701 First Avenue
address:        Sunnyvale, CA 94089
phone:          +000000000
e-mail:         rir-admin@yahooinc.com
admin-c:        YI12-AP
tech-c:         YI12-AP
nic-hdl:        AY527-AP
remarks:        Generated from irt object IRT-YAHOO-AP
remarks:        rir-abuse@yahooinc.com is invalid
remarks:        rir-admin@yahooinc.com was validated on 2026-04-03
abuse-mailbox:  rir-abuse@yahooinc.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-04-03T21:28:03Z
source:         APNIC

role:           YAHOO INC
address:        701 First Avenue
address:        Sunnyvale, CA 94089
country:        US
phone:          +1 408 349 3300
fax-no:         +1 408 349 3301
e-mail:         rir-admin@yahooinc.com
remarks:        send spam and abuse reports to rir-abuse@yahooinc.com
remarks:        or visit http://abuse.yahoo.com
admin-c:        KT615-AP
tech-c:         KT615-AP
nic-hdl:        YI12-AP
notify:         netops@yahoo-inc.com
mnt-by:         MAINT-AP-YAHOO-INC
last-modified:  2022-12-06T10:12:37Z
source:         APNIC

% 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:       58368 - 58578
ASName:         APNIC-ASNBLOCK-58368
ASHandle:       AS58368
RegDate:        2011-08-09
Updated:        2024-01-22
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/58368

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 'AS58368 - AS59391'

as-block:       AS58368 - AS59391
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:  2011-08-10T06:21:41Z
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 'AS58525'

% Abuse contact for 'AS58525' is 'rir-abuse@yahooinc.com'

aut-num:        AS58525
as-name:        YAHOO-CORP-TOK3
descr:          Yahoo! Tokyo office
country:        JP
org:            ORG-YA6-AP
admin-c:        YI12-AP
tech-c:         YI12-AP
abuse-c:        AY527-AP
mnt-lower:      MAINT-AP-YAHOO-INC
mnt-routes:     MAINT-AP-YAHOO-INC
mnt-by:         APNIC-HM
mnt-irt:        IRT-YAHOO-AP
last-modified:  2021-01-11T00:24:37Z
source:         APNIC

irt:            IRT-YAHOO-AP
address:        701 First Avenue
address:        Sunnyvale, CA 94089
e-mail:         rir-admin@yahooinc.com
abuse-mailbox:  rir-abuse@yahooinc.com
admin-c:        YI12-AP
tech-c:         YI12-AP
auth:           # Filtered
remarks:        rir-admin@yahooinc.com was validated on 2026-04-03
remarks:        rir-abuse@yahooinc.com was validated on 2026-04-03
mnt-by:         MAINT-AP-YAHOO-INC
last-modified:  2026-04-03T21:28:03Z
source:         APNIC

organisation:   ORG-YA6-AP
org-name:       Yahoo Inc.
org-type:       LIR
country:        US
address:        770 Broadway
phone:          +65-6809-8000
fax-no:         +1-214-478-6657
e-mail:         rir-admin@yahooinc.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:52Z
source:         APNIC

role:           ABUSE YAHOOAP
country:        ZZ
address:        701 First Avenue
address:        Sunnyvale, CA 94089
phone:          +000000000
e-mail:         rir-admin@yahooinc.com
admin-c:        YI12-AP
tech-c:         YI12-AP
nic-hdl:        AY527-AP
remarks:        Generated from irt object IRT-YAHOO-AP
remarks:        rir-abuse@yahooinc.com is invalid
remarks:        rir-admin@yahooinc.com was validated on 2026-04-03
abuse-mailbox:  rir-abuse@yahooinc.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-04-03T21:28:03Z
source:         APNIC

role:           YAHOO INC
address:        701 First Avenue
address:        Sunnyvale, CA 94089
country:        US
phone:          +1 408 349 3300
fax-no:         +1 408 349 3301
e-mail:         rir-admin@yahooinc.com
remarks:        send spam and abuse reports to rir-abuse@yahooinc.com
remarks:        or visit http://abuse.yahoo.com
admin-c:        KT615-AP
tech-c:         KT615-AP
nic-hdl:        YI12-AP
notify:         netops@yahoo-inc.com
mnt-by:         MAINT-AP-YAHOO-INC
last-modified:  2022-12-06T10:12:37Z
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" : "AS58368 - AS59391",
    "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" : "2011-08-10",
    "source" : "APNIC"
  }, {
    "as_block" : "AS58368 - AS59391",
    "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" : "2011-08-10",
    "source" : "APNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS58525",
    "as_name" : "YAHOO-CORP-TOK3",
    "description" : [ "Yahoo! Tokyo office" ],
    "country" : "JP",
    "organization" : "ORG-YA6-AP",
    "admin_contacts" : [ "YI12-AP" ],
    "tech_contacts" : [ "YI12-AP" ],
    "abuse_contacts" : [ "AY527-AP" ],
    "mnt_irt" : [ "IRT-YAHOO-AP" ],
    "mnt_lower" : [ "MAINT-AP-YAHOO-INC" ],
    "mnt_routes" : [ "MAINT-AP-YAHOO-INC" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2021-01-11",
    "source" : "APNIC"
  }, {
    "aut_num" : "AS58525",
    "as_name" : "YAHOO-CORP-TOK3",
    "description" : [ "Yahoo! Tokyo office" ],
    "country" : "JP",
    "organization" : "ORG-YA6-AP",
    "admin_contacts" : [ "YI12-AP" ],
    "tech_contacts" : [ "YI12-AP" ],
    "abuse_contacts" : [ "AY527-AP" ],
    "mnt_irt" : [ "IRT-YAHOO-AP" ],
    "mnt_lower" : [ "MAINT-AP-YAHOO-INC" ],
    "mnt_routes" : [ "MAINT-AP-YAHOO-INC" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2021-01-11",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-YAHOO-AP",
    "address" : [ "701 First Avenue", "Sunnyvale, CA 94089" ],
    "street" : "First Avenue",
    "city" : "Sunnyvale",
    "state" : "CA",
    "zip_code" : "94089",
    "email" : [ "rir-admin@yahooinc.com" ],
    "abuse_mailbox" : [ "rir-abuse@yahooinc.com" ],
    "admin_contacts" : [ "YI12-AP" ],
    "tech_contacts" : [ "YI12-AP" ],
    "remarks" : [ "rir-admin@yahooinc.com was validated on 2026-04-03", "rir-abuse@yahooinc.com was validated on 2026-04-03" ],
    "mnt_by" : [ "MAINT-AP-YAHOO-INC" ],
    "date_updated" : "2026-04-03",
    "source" : "APNIC"
  },
  "organization" : {
    "handle" : "ORG-YA6-AP",
    "name" : "Yahoo Inc.",
    "type" : "LIR",
    "address" : [ "770 Broadway" ],
    "street" : "Broadway",
    "country" : [ "US" ],
    "email" : [ "rir-admin@yahooinc.com" ],
    "phone" : [ "+65-6809-8000" ],
    "fax_no" : [ "+1-214-478-6657" ],
    "mnt_ref" : [ "APNIC-HM" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2023-09-05",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "YI12-AP",
    "name" : "YAHOO INC",
    "address" : [ "701 First Avenue", "Sunnyvale, CA 94089" ],
    "street" : "First Avenue",
    "city" : "Sunnyvale",
    "state" : "CA",
    "zip_code" : "94089",
    "country" : "US",
    "email" : [ "rir-admin@yahooinc.com" ],
    "phone" : [ "+1 408 349 3300" ],
    "fax_no" : [ "+1 408 349 3301" ],
    "admin_contacts" : [ "KT615-AP" ],
    "tech_contacts" : [ "KT615-AP" ],
    "remarks" : [ "send spam and abuse reports to rir-abuse@yahooinc.com", "or visit http://abuse.yahoo.com" ],
    "notify" : [ "netops@yahoo-inc.com" ],
    "mnt_by" : [ "MAINT-AP-YAHOO-INC" ],
    "date_updated" : "2022-12-06",
    "source" : "APNIC"
  } ],
  "technical_contacts" : [ {
    "handle" : "YI12-AP",
    "name" : "YAHOO INC",
    "address" : [ "701 First Avenue", "Sunnyvale, CA 94089" ],
    "street" : "First Avenue",
    "city" : "Sunnyvale",
    "state" : "CA",
    "zip_code" : "94089",
    "country" : "US",
    "email" : [ "rir-admin@yahooinc.com" ],
    "phone" : [ "+1 408 349 3300" ],
    "fax_no" : [ "+1 408 349 3301" ],
    "admin_contacts" : [ "KT615-AP" ],
    "tech_contacts" : [ "KT615-AP" ],
    "remarks" : [ "send spam and abuse reports to rir-abuse@yahooinc.com", "or visit http://abuse.yahoo.com" ],
    "notify" : [ "netops@yahoo-inc.com" ],
    "mnt_by" : [ "MAINT-AP-YAHOO-INC" ],
    "date_updated" : "2022-12-06",
    "source" : "APNIC"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AY527-AP",
    "name" : "ABUSE YAHOOAP",
    "address" : [ "701 First Avenue", "Sunnyvale, CA 94089" ],
    "street" : "First Avenue",
    "city" : "Sunnyvale",
    "state" : "CA",
    "zip_code" : "94089",
    "country" : "ZZ",
    "email" : [ "rir-admin@yahooinc.com" ],
    "abuse_mailbox" : [ "rir-abuse@yahooinc.com" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "YI12-AP" ],
    "tech_contacts" : [ "YI12-AP" ],
    "remarks" : [ "Generated from irt object IRT-YAHOO-AP", "rir-abuse@yahooinc.com is invalid", "rir-admin@yahooinc.com was validated on 2026-04-03" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2026-04-03",
    "source" : "APNIC"
  } ]
}