Data as of Nov 10, 2026
192.153.97.0/24
No anonymizer space · no proxy exits in 30 daysResearch Organization of Information and Systems, National Institute of Informatics · space held by imported inetnum object for NCSIS-1
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 192. | 2,560 | NETBLK-SINET-C1 | imported inetnum object for NCSIS-1 | ASSIGNED PORTABLE | — | hostmaster@ |
| └ 192.153.97.0/24 | 256 | SINET | Research Organization of Information and Systems, National Institute of Informatics | ASSIGNED PORTABLE | — | hostmaster@ |
Network & registry
Announced by
Covering announcement 192.153.96.0/21
- Prefix
- 192.153.96.0/21
- Announced by
- AS2907 Research Organization of Information and Systems, National Institute of Informatics
- Type
- Business
- RPKI
- RPKI valid
- Netname
- NETBLK-SINET-C1
- Registrant
- imported inetnum object for NCSIS-1
- RIR
- APNIC
Origin network
AS2907
JP
- Name
- Research Organization of Information and Systems, National Institute of Informatics
- Type
- Education
- Registered
- Aug 1, 2002
- Domain
- sinet.ad.jp
- Website
- www.sinet.ad.jp/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 192.153.96.0/21
192.153.96.0/21
Routing history
- Pattern
- Stable
- First seen
- Apr 2019
- Current origin since
- Mar 2023 · 3.6 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 192.153.96.0/21 | AS2907 | /32 | APNIC | RPKI valid |
IRR
Route objects on 192.153.96.0/21
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS2907 | JPIRR | National Institute of Informatics | MAINT-AS2907 | Mar 2, 2026 |
Whois
Registration for this announcement
- Range
- 192.
153. 95. 0 - 192. 153. 104. 255 - Netname
- NETBLK-SINET-C1
- Registrant
- imported inetnum object for NCSIS-1
- Registrant country
- JP
- Organization
- imported inetnum object for NCSIS-1
- Org country
- JP
- Type
- ASSIGNED PORTABLE
- Created
- Not stated by the registry
- Updated
- Dec 1, 2015
- Maintainer
- MNT-ERX-NATIOCENTEFORSCIEN-NON-JP
- RIR
- APNIC
- Country
- JP
- Delegated
- Jun 29, 1993
- Status
- assigned
Report abuse
Abuse contact
- hostmaster@
nic. ad. jp - Name
- IRT-JPNIC-JP
- Handle
- IRT-JPNIC-JP