ASN AS18258 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18258?

AS18258 is listed under Morgan Stanley Japan Group Co., Ltd..

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.

AS18258 Morgan Stanley Japan Group Co., Ltd.

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Morgan Stanley Japan Group Co., Ltd.

JP 6 Routes

AS Data

AS18258

AS18258 – Morgan Stanley Japan Group Co., Ltd.

AS Number	18258
AS Name	Morgan Stanley Japan Limited
Organization	Morgan Stanley Japan Group Co., Ltd. (org-msjg1-ap)
Country	JP
Number of IPv4 Routes	6
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	APNIC
Date Allocated	2002-12-30

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
209.8.176.0/24	AS18258	Morgan Stanley Japan Group Co., Ltd.	PCCW Global (HK) Limited	256
205.228.123.0/24	AS18258	Morgan Stanley Japan Group Co., Ltd.	Morgan Stanley Group Inc.	256
205.228.96.0/24	AS18258	Morgan Stanley Japan Group Co., Ltd.	Morgan Stanley Group Inc.	256
205.228.108.0/24	AS18258	Morgan Stanley Japan Group Co., Ltd.	Morgan Stanley Group Inc.	256
205.228.104.0/24	AS18258	Morgan Stanley Japan Group Co., Ltd.	Morgan Stanley Group Inc.	256
205.228.118.0/24	AS18258	Morgan Stanley Japan Group Co., Ltd.	Morgan Stanley Group Inc.	256

Raw Whois Response

[ 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 'AS17653 - AS18431'

as-block:       AS17653 - AS18431
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:  2019-01-08T23:19:07Z
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 'AS18258'

% Abuse contact for 'AS18258' is 'ens-ops-data-l3-asia@morganstanley.com'

aut-num:        AS18258
as-name:        MS-JP-AS-AP
descr:          Morgan Stanley Japan Limited
country:        JP
import:         from AS2914 action pref=100; accept ANY
import:         from AS4716 action pref=100; accept ANY
export:         to AS2914 announce AS18258
export:         to AS4716 announce AS18258
remarks:        BGP AS for Japan Internet Plant
org:            ORG-MSJG1-AP
admin-c:        AELO1-AP
tech-c:         AS1195-AP
abuse-c:        AM2960-AP
notify:         ens-ops-data-l3-asia@morganstanley.com
mnt-lower:      MAINT-JP-MORGANSTANLEY
mnt-routes:     MAINT-JP-MORGANSTANLEY
mnt-by:         APNIC-HM
mnt-irt:        IRT-MORGANSTANLEY-NON-JP
last-modified:  2021-01-11T00:28:35Z
source:         APNIC

irt:            IRT-MORGANSTANLEY-NON-JP
address:        Morgan Stanley Japan Group Co., Ltd.
address:        Otemachi Financial City South Tower
address:        1-9-7 Otemachi, Chiyoda-ku
address:        Tokyo JP-13 100-8109, Japan
e-mail:         ens-ops-data-l3-asia@morganstanley.com
abuse-mailbox:  ens-ops-data-l3-asia@morganstanley.com
admin-c:        AELO1-AP
tech-c:         AS1195-AP
auth:           # Filtered
remarks:        ens-ops-data-l3-asia@morganstanley.com was validated on 2026-04-23
mnt-by:         MAINT-JP-MORGANSTANLEY
last-modified:  2026-07-09T05:05:48Z
source:         APNIC

organisation:   ORG-MSJG1-AP
org-name:       Morgan Stanley Japan Group Co., Ltd.
org-type:       LIR
country:        JP
address:        Otemachi Financial City South Tower
address:        1-9-7 Otemachi
phone:          +852-2848-5200
fax-no:         +852-3407-5040
e-mail:         apac_ckts_requests@morganstanley.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:54Z
source:         APNIC

role:           ABUSE MORGANSTANLEYNONJP
country:        ZZ
address:        Morgan Stanley Japan Group Co., Ltd.
address:        Otemachi Financial City South Tower
address:        1-9-7 Otemachi, Chiyoda-ku
address:        Tokyo JP-13 100-8109, Japan
phone:          +000000000
e-mail:         ens-ops-data-l3-asia@morganstanley.com
admin-c:        AELO1-AP
tech-c:         AS1195-AP
nic-hdl:        AM2960-AP
remarks:        Generated from irt object IRT-MORGANSTANLEY-NON-JP
remarks:        ens-ops-data-l3-asia@morganstanley.com was validated on 2026-04-23
abuse-mailbox:  ens-ops-data-l3-asia@morganstanley.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-04-23T02:46:49Z
source:         APNIC

person:         Asia ENS L3 Ops
address:
country:        HK
phone:          +852 3150-3611
e-mail:         ens-ops-data-l3-asia@morganstanley.com
nic-hdl:        AELO1-AP
mnt-by:         MAINT-HK-MSDW
last-modified:  2018-05-25T03:17:01Z
source:         APNIC

person:         Alfred Shum
address:        35/F, International Commerce Centre, 1 Austin Road West, Kowloon, Hong Kong
country:        HK
phone:          +852-3963-2665
e-mail:         alfred.shum@morganstanley.com
nic-hdl:        AS1195-AP
mnt-by:         MAINT-HK-MSDW
last-modified:  2018-05-25T03:27:55Z
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" : "AS17653 - AS18431",
    "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" : "2019-01-08",
    "source" : "APNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS18258",
    "as_name" : "MS-JP-AS-AP",
    "description" : [ "Morgan Stanley Japan Limited" ],
    "country" : "JP",
    "import" : [ "from AS2914 action pref=100; accept ANY", "from AS4716 action pref=100; accept ANY" ],
    "export" : [ "to AS2914 announce AS18258", "to AS4716 announce AS18258" ],
    "organization" : "ORG-MSJG1-AP",
    "admin_contacts" : [ "AELO1-AP" ],
    "tech_contacts" : [ "AS1195-AP" ],
    "abuse_contacts" : [ "AM2960-AP" ],
    "remarks" : [ "BGP AS for Japan Internet Plant" ],
    "notify" : [ "ens-ops-data-l3-asia@morganstanley.com" ],
    "mnt_irt" : [ "IRT-MORGANSTANLEY-NON-JP" ],
    "mnt_lower" : [ "MAINT-JP-MORGANSTANLEY" ],
    "mnt_routes" : [ "MAINT-JP-MORGANSTANLEY" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2021-01-11",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-MORGANSTANLEY-NON-JP",
    "address" : [ "Morgan Stanley Japan Group Co., Ltd.", "Otemachi Financial City South Tower", "1-9-7 Otemachi, Chiyoda-ku", "Tokyo JP-13 100-8109, Japan" ],
    "street" : "Otemachi Chiyoda-ku Tokyo",
    "city" : "100-8109",
    "zip_code" : "JP-13",
    "country" : "JAPAN",
    "email" : [ "ens-ops-data-l3-asia@morganstanley.com" ],
    "abuse_mailbox" : [ "ens-ops-data-l3-asia@morganstanley.com" ],
    "admin_contacts" : [ "AELO1-AP" ],
    "tech_contacts" : [ "AS1195-AP" ],
    "remarks" : [ "ens-ops-data-l3-asia@morganstanley.com was validated on 2026-04-23" ],
    "mnt_by" : [ "MAINT-JP-MORGANSTANLEY" ],
    "date_updated" : "2026-07-09",
    "source" : "APNIC"
  },
  "organization" : {
    "handle" : "ORG-MSJG1-AP",
    "name" : "Morgan Stanley Japan Group Co., Ltd.",
    "type" : "LIR",
    "address" : [ "Otemachi Financial City South Tower", "1-9-7 Otemachi" ],
    "street" : "Otemachi",
    "country" : [ "JP" ],
    "email" : [ "apac_ckts_requests@morganstanley.com" ],
    "phone" : [ "+852-2848-5200" ],
    "fax_no" : [ "+852-3407-5040" ],
    "mnt_ref" : [ "APNIC-HM" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2023-09-05",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "AELO1-AP",
    "name" : "Asia ENS L3 Ops",
    "country" : "HK",
    "email" : [ "ens-ops-data-l3-asia@morganstanley.com" ],
    "phone" : [ "+852 3150-3611" ],
    "mnt_by" : [ "MAINT-HK-MSDW" ],
    "date_updated" : "2018-05-25",
    "source" : "APNIC"
  } ],
  "technical_contacts" : [ {
    "handle" : "AS1195-AP",
    "name" : "Alfred Shum",
    "address" : [ "35/F, International Commerce Centre, 1 Austin Road West, Kowloon, Hong Kong" ],
    "street" : "Austin Road West",
    "city" : "Kowloon",
    "country" : "HK",
    "email" : [ "alfred.shum@morganstanley.com" ],
    "phone" : [ "+852-3963-2665" ],
    "mnt_by" : [ "MAINT-HK-MSDW" ],
    "date_updated" : "2018-05-25",
    "source" : "APNIC",
    "addressCountry" : "HONG KONG"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AM2960-AP",
    "name" : "ABUSE MORGANSTANLEYNONJP",
    "address" : [ "Morgan Stanley Japan Group Co., Ltd.", "Otemachi Financial City South Tower", "1-9-7 Otemachi, Chiyoda-ku", "Tokyo JP-13 100-8109, Japan" ],
    "street" : "Otemachi Chiyoda-ku Tokyo",
    "city" : "100-8109",
    "zip_code" : "JP-13",
    "country" : "ZZ",
    "email" : [ "ens-ops-data-l3-asia@morganstanley.com" ],
    "abuse_mailbox" : [ "ens-ops-data-l3-asia@morganstanley.com" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "AELO1-AP" ],
    "tech_contacts" : [ "AS1195-AP" ],
    "remarks" : [ "Generated from irt object IRT-MORGANSTANLEY-NON-JP", "ens-ops-data-l3-asia@morganstanley.com was validated on 2026-04-23" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2026-04-23",
    "source" : "APNIC",
    "addressCountry" : "JAPAN"
  } ]
}

Peers

AS Number	Description	Country
AS31713	A PCCW Company	BE
AS2516	KDDI CORPORATION	ZZ
AS3491	PCCW Global HK Limited	HK
AS4716	KDDI CORPORATION	JP
AS4637	Telstra International Limited	HK
AS2914	NTT America, Inc.	US

Upstreams

AS Number	Description	Country
AS2516	KDDI CORPORATION	ZZ
AS3491	PCCW Global HK Limited	HK
AS4637	Telstra International Limited	HK
AS2914	NTT America, Inc.	US

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ASN Summary

AS18258 – Morgan Stanley Japan Group Co., Ltd.

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IP Ranges

Raw Whois Response

Parsed Whois Response

Peers

Upstreams

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