AS Number
AS131923
AS Name
MCAT
Org Name
MCAT Ltd.
Country / Region
Japan
Registry

apnic

RegDate

Updated

2009-09-29T05:34:08Z

AS131923 Looking Glass
IPv4Prefixes

10

IPv6Prefixes

1

IPv4 NUMs

22,528

IPv6 NUMs(/64)

4,294,967,296

CIDR Description IP Num
103.95.104.0/22
MCAT MCAT Ltd. 1024
120.50.192.0/20
MCAT MCAT Ltd. 4096
133.88.87.0/24
JPNIC-NET-JP-ERX Japan Network Information Center 256
133.88.88.0/22
JPNIC-NET-JP-ERX Japan Network Information Center 1024
133.88.92.0/23
JPNIC-NET-JP-ERX Japan Network Information Center 512
133.88.94.0/24
JPNIC-NET-JP-ERX Japan Network Information Center 256
133.247.136.0/21
JPNIC-NET-JP-ERX Japan Network Information Center 2048
133.247.240.0/20
JPNIC-NET-JP-ERX Japan Network Information Center 4096
218.45.64.0/19
JPNIC-NET-JP Japan Network Information Center 8192
219.100.156.0/22
JPNIC-NET-JP Japan Network Information Center 1024
CIDR Description IP NUMs(prefix /64)
2401:5ac0::/32
MCAT-JPNIC-JP-20170620 Japan Network Information Center 4294967296
AS Description Country / Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS2500 WIDE-BB - WIDE Project, JP Japan 65,536 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS4713 OCN - NTT DOCOMO BUSINESS,Inc., JP Japan 28,624,128 4,406,636,511,233 IPv4 IPv4 IPv6 IPv6
AS137409 GSLNETWORKS-AS-AP - GSL Networks Pty LTD, AU Australia 140,800 77,423,378,434 IPv4 IPv4 IPv6 IPv6
AS199524 GCORE - G-Core Labs S.A., LU Luxembourg 125,952 118,226,945 IPv4 IPv4
AS9002 RETN-AS - RETN Limited, GB United Kingdom 26,624 4,831,838,208 IPv4 IPv4 IPv6 IPv6
AS18106 VIEWQWEST-SG-AP - Viewqwest Pte Ltd, SG Singapore 53,248 13,153,337,344 IPv4 IPv4 IPv6 IPv6
AS24482 SGGS-AS-AP - SG.GS, SG Singapore 20,992 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS59105 HOMENOC - Home NOC Operators Group, JP Japan 2,048 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS64049 RJIPL-SG - Reliance Jio Infocomm Pte.Ltd, SG Singapore 2,048 0 IPv4 IPv4 IPv6 IPv6
AS9583 SIFY-AS-IN - Sify Limited, IN India 758,016 4,294,967,296 IPv6 IPv6
AS2907 SINET-AS - Research Organization of Information and Systems, National Institute of Informatics, JP Japan 8,819,968 8,589,934,595 IPv4 IPv4 IPv6 IPv6
AS17676 ULTINA - SoftBank Mobile Corp., JP Japan 38,313,728 18,695,992,639,488 IPv4 IPv4 IPv6 IPv6
AS19151 BBO-1 - BroadbandONE, LLC, US United States 63,232 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS49544 i3Dnet - i3D.net B.V, NL Netherlands 116,992 356,753,080,320 IPv4 IPv4 IPv6 IPv6
AS9009 M247 - M247 Europe SRL, RO Romania 1,569,536 257,769,079,040 IPv6 IPv6
AS45796 UIH-BBCONNECT-AS-AP - UIH / BB Connect, TH Thailand 2,048 4,294,967,296 IPv6 IPv6
AS2519 Vectant - ARTERIA Networks Corporation, JP Japan 1,464,832 103,079,215,104 IPv4 IPv4 IPv6 IPv6
AS4229 ZEN-NET - Zenlayer Inc, US United States 7,936 4,294,967,296 IPv4 IPv4
AS35280 F5 - F5 Networks SARL, FR France 55,808 81,604,378,624 IPv4 IPv4 IPv6 IPv6
AS138997 EDCL-AS-AP - Eons Data Communications Limited, HK Hong Kong 54,016 26,092,765,184 IPv4 IPv4 IPv6 IPv6
AS38082 IIT-TIG-AS-AP - True International Gateway Co., Ltd., TH Thailand 7,168 4,294,967,296 IPv6 IPv6

Whois Record

as-block AS131072 - AS132095

as-block
descr
APNIC 32-bit ASN block
remarks
These AS numbers are further assigned by APNIC
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

role
APNIC Hostmaster
address
PO Box 3646
South Brisbane
QLD 4101
country
AU
phone
+61 7 3858 3100
fax-no
+61 7 3858 3199
e-mail
admin-c
AMS11-AP
tech-c
AH256-AP
nic-hdl
HM20-AP
remarks
Administrator for APNIC
notify
mnt-by
MAINT-APNIC-AP
last-modified
2026-08-26T00:40:00Z
source
APNIC

as-block AS131905 - AS131992

as-block
descr
JPNIC-4Byte-ASBLOCK-AP
country
JP
admin-c
JNIC1-AP
tech-c
JNIC1-AP
remarks
for assignment to JPNIC members
Authoritative information regarding AS Number
assignments made from within this block can also be
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

role
Japan Network Information Center
address
Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda
Chiyoda-ku, Tokyo 101-0047, Japan
country
JP
phone
+81-3-5297-2311
fax-no
+81-3-5297-2312
e-mail
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

aut-num AS131923

aut-num
as-name
MCAT
descr
MCAT Ltd.
import
from AS4713 100 accept ANY
from AS4725 100 accept ANY
from AS17676 100 accept ANY
export
to AS4713 announce AS131923
to AS4725 announce AS131923
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
JPNIC. To obtain more specific information, please use the
JPNIC WHOIS Gateway at
http://www.nic.ad.jp/en/db/whois/en-gateway.html or
whois.nic.ad.jp for WHOIS client. (The WHOIS client
defaults to Japanese output, use the /e switch for English
output)
source
JPNIC

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:        PO Box 3646
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         [email protected]
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         [email protected]
mnt-by:         MAINT-APNIC-AP
last-modified:  2026-08-26T00:40:00Z
source:         APNIC


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:         [email protected]
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


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