Data as of Nov 9, 2026
192.51.144.0/21
No anonymizer space · no proxy exits in 30 daysOPTAGE Inc. · space held by imported inetnum object for JNIC
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 192.51.128.0/19 | 8,192 | JAPAN-INET-BLOCK4 | imported inetnum object for JNIC | ALLOCATED PORTABLE | — | hostmaster@ |
| └ 192.51.144.0/21 | 2,048 | KHN-INTERNET | Keihanna Interaction Plaza Inc. | ALLOCATED PORTABLE | — | hostmaster@ |
Network & registry
IPv4 market
Holder
- Organization
- imported inetnum object for JNIC
- Range
- 192.
51. 128. 0/ 19 - Registration type
- ALLOCATED PORTABLE
Origin network
AS17511
JP
- Name
- OPTAGE Inc.
- Type
- Internet provider
- Registered
- Dec 12, 2000
- Domain
- optage.co.jp
- Website
- optage.co.jp/en/
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS17511 | RADB | Owned by KHN-INTERNET/KEIHANNA INTERACTION PLAZA INC. | MAINT-AS17511 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 192.
51. 144. 0/ 21 - Netname
- KHN-INTERNET-CIDR-BLK-JP
- Registrant
- Keihanna Interaction Plaza Inc.
- Registrant country
- JP
- Organization
- Keihanna Interaction Plaza Inc.
- Org country
- JP
- Created
- Not stated by the registry
- Updated
- Aug 1, 2008
- RIR
- APNIC
- Country
- JP
- Delegated
- Apr 19, 1994
- Status
- assigned