ASN Lookup Tool

MCAT Ltd. JP JP 11 Routes

AS Data

AS131923

AS131923MCAT Ltd.

AS Number 131923
AS Name MCAT
Organization MCAT Ltd.()
Country JP
Number of IPv4 Routes 10
Number of IPv6 Routes 1
ASN type BUSINESS
Registry JPNIC
Date Allocated N/A

ASN Intelligence API for production workflows

Use ASN data for AS131923 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

IP Ranges

Route # IPs
133.88.87.0/24 256
133.88.94.0/24 256
218.45.64.0/19 8192
2401:5ac0::/32 ~79×10²⁷
133.88.92.0/23 512
133.247.136.0/21 2048
133.88.88.0/22 1024
120.50.192.0/20 4096
219.100.156.0/22 1024
133.247.240.0/20 4096

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'.      ]

Autonomous System Information:
a. [AS Number]                  131923
b. [AS Name]                    MCAT
g. [Organization]               MCAT Ltd.
m. [Administrative Contact]     JP00148370
n. [Technical Contact]          JP00148370
q. [Abuse]                      
o. [IMPORT]                     from AS4713 100 accept ANY
o. [IMPORT]                     from AS4725 100 accept ANY
o. [IMPORT]                     from AS17676 100 accept ANY
p. [EXPORT]                     to AS4713 announce AS131923
p. [EXPORT]                     to AS4725 announce AS131923
p. [EXPORT]                     to AS17676 announce AS131923
[Assigned Date]                 2017/08/08
[Last Update]                   2023/04/10 10:34:21(JST)
% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS131072 - AS132095'

as-block:       AS131072 - AS132095
descr:          APNIC 32-bit 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:  2009-09-29T05:34:08Z
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 'AS131905 - AS131992'

as-block:       AS131905 - AS131992
descr:          JPNIC-4Byte-ASBLOCK-AP
country:        JP
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
remarks:        for assignment to JPNIC members
remarks:        Authoritative information regarding AS Number
remarks:        assignments made from within this block can also be
remarks:        queried at whois.nic.ad.jp
mnt-by:         MAINT-JPNIC
mnt-lower:      MAINT-JPNIC
last-modified:  2016-01-27T00:24:03Z
source:         APNIC

role:           Japan Network Information Center
address:        Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda
address:        Chiyoda-ku, Tokyo 101-0047, Japan
country:        JP
phone:          +81-3-5297-2311
fax-no:         +81-3-5297-2312
e-mail:         hostmaster@nic.ad.jp
admin-c:        JI13-AP
tech-c:         JE53-AP
nic-hdl:        JNIC1-AP
mnt-by:         MAINT-JPNIC
last-modified:  2022-01-05T03:04:02Z
source:         APNIC

% Information related to 'AS131923'

aut-num:        AS131923
as-name:        MCAT
descr:          MCAT Ltd.
import:         from AS4713 100 accept ANY
import:         from AS4725 100 accept ANY
import:         from AS17676 100 accept ANY
export:         to AS4713 announce AS131923
export:         to AS4725 announce AS131923
export:         to AS17676 announce AS131923
country:        JP
admin-c:        JP00148370
tech-c:         JP00148370
last-modified:  2023-04-10T19:34:21Z
remarks:        This information has been partially mirrored by APNIC from
remarks:        JPNIC. To obtain more specific information, please use the
remarks:        JPNIC WHOIS Gateway at
remarks:        http://www.nic.ad.jp/en/db/whois/en-gateway.html or
remarks:        whois.nic.ad.jp for WHOIS client. (The WHOIS client
remarks:        defaults to Japanese output, use the /e switch for English
remarks:        output)
source:         JPNIC

% Information related to 'AS131072 - AS132095'

as-block:       AS131072 - AS132095
descr:          APNIC 32-bit ASN block
admin-c:        IA55-AP
tech-c:         IH123-AP
mnt-by:         MNT-APJII-ID
mnt-lower:      MNT-APJII-ID
last-modified:  2026-02-25T07:12:54Z
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
AS24482 SG.GS SG
AS9304 HGC Global Communications Limited HK
AS59105 Home NOC Operators Group JP
AS2500 WIDE Project JP
AS138997 Eons Data Communications Limited HK
AS4775 Globe Telecoms PH
AS2519 ARTERIA Networks Corporation JP
AS4229 Zenlayer Inc US
AS150369 TelHi Corporation JP
AS8529 Zain Omantel International FZ-LLC AE

Upstreams

AS Number Description Country
AS24482 SG.GS SG
AS9304 HGC Global Communications Limited HK
AS4713 NTT DOCOMO BUSINESS,Inc. JP
AS9583 Sify Limited IN
AS9002 RETN Limited GB
AS17676 SoftBank Corp. JP
AS2519 ARTERIA Networks Corporation JP

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Frequently Asked Questions

ASN AS131923 is an Autonomous System Number used to identify a network for BGP internet routing.
AS131923 is listed under MCAT 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.