192.51.54.0/24

AS8220 · COLT Technology Services Group Limited

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Summary

Country	Japan
Domain	msi.co.jp
ASN	AS8220
Registry	APNIC
ID	MSINET

WHOIS Details

inetnum:        192.51.52.0 - 192.51.54.255
netname:        MSINET
country:        JP
descr:          NTT DATA Mathematical Systems Inc.
admin-c:        TI17-AP
tech-c:         TI17-AP
status:         ASSIGNED PORTABLE
notify:         adm@msi.co.jp
mnt-by:         MAINT-JPNIC
mnt-irt:        IRT-JPNIC-JP
changed:        hm-changed@apnic.net 20050216
changed:        ip-apnic@nic.ad.jp 20050406
changed:        ip-apnic@nic.ad.jp 20111214
changed:        ip-apnic@nic.ad.jp 20131003
source:         APNIC

irt:            IRT-JPNIC-JP
address:        Urbannet-Kanda Bldg 4F, 3-6-2 Uchi-Kanda
address:        Chiyoda-ku, Tokyo 101-0047, Japan
e-mail:         hostmaster@nic.ad.jp
abuse-mailbox:  hostmaster@nic.ad.jp
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
auth:           # Filtered
mnt-by:         MAINT-JPNIC
changed:        abuse@apnic.net 20101108
changed:        hm-changed@apnic.net 20101111
changed:        ip-apnic@nic.ad.jp 20140702
source:         APNIC

person:         Takashi Ishikawa
address:        MATHEMATICAL SYSTEMS INSTITUTE INC. 10F FOURSEASON BLDG. 2-4-3 SHINJUKU, SHINJYUKU-KU TOKYO
country:        JP
phone:          +81333581701
fax-no:         +81333586686
e-mail:         ishikawa@msi.co.jp
nic-hdl:        TI17-AP
remarks:        ----------
remarks:        imported from ARIN object:
remarks:        
remarks:        poc-handle:  TI011JP-JP-ARIN
remarks:        is-role:     N
remarks:        last-name:   Ishikawa
remarks:        first-name:  Takashi
remarks:        street:      MATHEMATICAL SYSTEMS INSTITUTE INC. 10F FOURSEASON BLDG. 2-4-3 SHINJUKU, SHINJYUKU-KU TOKYO
remarks:        country:     JP
remarks:        mailbox:     ishikawa@msi.co.jp
remarks:        fax-phone:   +81333586686
remarks:        bus-phone:   +81333581701
remarks:        reg-date:    1994-07-11
remarks:        changed:     hostmaster@arin.poc 19960708
remarks:        source:      ARIN
remarks:        
remarks:        ----------
notify:         ishikawa@msi.co.jp
mnt-by:         MNT-ERX-MATHESYSTEINSTIINC-NON-JP
changed:        hm-changed@apnic.net 20041222
source:         APNIC

inetnum:        192.51.52.0 - 192.51.54.255
netname:        MSINET-CIDR-BLK-JP
descr:          NTT DATA Mathematical Systems Inc.
country:        JP
admin-c:        TI011JP
tech-c:         AY024JP
tech-c:         MM8997JP
tech-c:         TI011JP
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)
changed:        apnic-ftp@nic.ad.jp 19900322
changed:        apnic-ftp@nic.ad.jp 20131002
source:         JPNIC

Nearby Ranges

BGP prefixes that overlap with 192.51.0.0/16

Range	ASN	Company	Num of IPs
192.51.208.0/20	AS2501	University of Tokyo	4,096
192.51.144.0/21	AS17511	KEIHANNA INTERACTION PLAZA INC.	2,048
192.51.168.0/22	AS2907	Inter-University Research Institute Corporation, National Institutes for the Humanities, National Museum of Ethnology	1,024
192.51.194.0/23	AS2907	Hokusei Gakuen University	512
192.51.192.0/23	AS21976	University Hospital	512
192.51.5.0/24	AS2116	Kongsberg Defence & Aerospace AS, Tromso	256
192.51.43.0/24	AS2510	FUJITSU LIMITED	256
192.51.240.0/24	AS36974	MTN COTE D'IVOIRE S.A	256
192.51.55.0/24	AS10021	TOYOBO CO., LTD.	256
192.51.48.0/24	AS399651	The Bancorp Incorporated	256
192.51.175.0/24	AS141311	Netmatix Network Private Limited	256
192.51.174.0/24	AS154084	Affinity Global Advertising Pvt Ltd	256
192.51.39.0/24	AS17944	Japan Weather Association	256
192.51.188.0/24	AS205960	Zhengzhou, a Dream Computer Technology Limited	256

Hosted domains

There are 2 domain names hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
192.51.54.198	msi.co.jp	2

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

2 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
192.51.54.129	AS8220 COLT Technology Services Group Limited	`1.99ms` from Tokyo, JP

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
23.112.178.88	AS7018 AT&T Enterprises, LLC	`6.76ms` from Atlanta, US
191.92.172.56	AS27831 Colombia Móvil	`7.26ms` from Bogota, CO
192.146.148.40	AS400730 Spartanburg County	`2.15ms` from Charlotte, US
76.18.92.40	AS7922 Comcast Cable Communications, LLC	`14.09ms` from Denver, US
109.146.222.24	AS2856 British Telecommunications PLC	`6.37ms` from Erith, GB
91.23.108.24	AS3320 Deutsche Telekom AG	`8.00ms` from Frankfurt am Main, DE
14.248.30.24	AS45899 VNPT Corp	`1.33ms` from Hanoi, VN
87.196.112.136	AS2860 NOS COMUNICACOES, S.A.	`17.94ms` from Lisbon, PT
88.23.114.136	AS3352 TELEFONICA DE ESPANA S.A.U.	`6.60ms` from Madrid, ES
175.39.11.136	AS4804 Microplex PTY LTD	`10.57ms` from Melbourne, AU
142.118.248.248	AS577 Bell Canada	`1.95ms` from Montreal, CA
111.78.34.168	AS4134 CHINANET-BACKBONE	`7.69ms` from Nanchang, CN
126.60.157.88	AS17676 SoftBank Corp.	`2.12ms` from Osaka, JP
87.110.19.40	AS12578 SIA Tet	`1.14ms` from Riga, LV
179.158.98.216	AS28573 Claro NXT Telecomunicacoes Ltda	`8.29ms` from Rio de Janeiro, BR
52.140.5.104	AS8075 Microsoft Corporation	`0.32ms` from Saint Thomas Mount, IN
191.235.204.216	AS8075 Microsoft Corporation	`0.54ms` from Sao Paulo, BR
45.255.254.232	AS135580 Neutral Transmission Malaysia Sdn. Bhd.	`0.38ms` from Sepang, MY
142.122.123.104	AS577 Bell Canada	`4.29ms` from Toronto, CA
176.99.53.8	AS50121 NETMAR Mariusz Wator	`7.73ms` from Warsaw, PL
172.10.20.24	AS7018 AT&T Enterprises, LLC	`6.29ms` from Atlanta, US
128.103.147.168	AS1742 Harvard University	`0.90ms` from Boston, US
75.216.252.168	AS6167 Verizon Business	`7.69ms` from Denver, US
37.59.109.136	AS16276 OVH SAS	`0.16ms` from Gravelines, FR
16.162.114.184	AS16509 Amazon.com, Inc.	`0.12ms` from Hong Kong, HK

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f4 192.51.54.129

traceroute to 192.51.54.129 (192.51.54.129): 64 hops max, 52 byte packets

4 [AS63949] 139.162.64.102 0.949 ms

5 [] 101.203.89.22 3.993 ms

6 [] 193.114.182.95 1.384 ms

7 [AS8220] 148.109.6.174 1.992 ms

8 [AS8220] 192.51.54.129 2.058 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On December 6th 2025

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