Data as of Nov 14, 2026
164.161.239.0/24
No anonymizer space · no proxy exits in 30 daysResearch Organization of Information and Systems, National Institute of Informatics · space held by Tokyo University of Marine Science and Technology
Network & registry
Announced by
Covering announcement 164.161.0.0/16
- Prefix
- 164.161.0.0/16
- Announced by
- AS2907 Research Organization of Information and Systems, National Institute of Informatics
- Type
- Business
- Proxy exits
- 7
- RPKI
- No RPKI
- Netname
- KAIYO-S-NET
- Registrant
- Tokyo University of Marine Science and Technology
- 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 164.161.0.0/16
164.161.0.0/16
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
IRR
Route objects on 164.161.0.0/16
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS2907 | JPIRR | Tokyo University of Fisheries | MAINT-AS2907 | Mar 2, 2026 |
Whois
Registration for this announcement
- Range
- 164.
161. 0. 0/ 16 - Netname
- KAIYO-S-NET
- Registrant
- Tokyo University of Marine Science and Technology
- Registrant country
- JP
- Organization
- Tokyo University of Marine Science and Technology
- Org country
- JP
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Dec 1, 2015
- Maintainer
- MAINT-JPNIC
- RIR
- APNIC
- Country
- JP
- Delegated
- Mar 19, 1993
- Status
- assigned
Report abuse
Abuse contact
- hostmaster@
nic. ad. jp - Name
- IRT-JPNIC-JP
- Handle
- IRT-JPNIC-JP