192.51.54.0/24
AS8220 · COLT Technology Services Group Limited
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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
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Hosted domains API
What are IP address ranges?
IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.
Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.
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