Data as of Nov 11, 2026
133.236.131.0/24
No anonymizer space · no proxy exits in 30 daysInternet Initiative Japan Inc. · space held by Japan Network Information Center
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 |
|---|---|---|---|---|---|---|
| 133.0.0.0/8 | 16,777,216 | JPNIC-NET-JP-ERX | Japan Network Information Center | ALLOCATED PORTABLE | — | hostmaster@ |
Network & registry
Announced by
Covering announcement 133.236.0.0/16
- Prefix
- 133.236.0.0/16
- Announced by
- AS2497 Internet Initiative Japan Inc.
- Type
- Internet provider
- Proxy exits
- 9
- RPKI
- RPKI valid
- Netname
- IIJ-CIDR-BLK-JP
- Registrant
- Internet Initiative Japan Inc.
- RIR
- APNIC
IPv4 market
Holder
- Organization
- Japan Network Information Center
- Range
- 133.
0. 0. 0/ 8 - Registration type
- ALLOCATED PORTABLE
Origin network
AS2497
JP
- Name
- Internet Initiative Japan Inc.
- Type
- Internet provider
- Registered
- Apr 5, 2002
- Domain
- iij.ad.jp
- Website
- www.iij.ad.jp/en/
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 133.236.0.0/16
133.236.0.0/16
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 133.236.0.0/16 | AS2497 | /16 | APNIC | RPKI valid |
Whois
Registration for this announcement
- Range
- 133.
236. 0. 0/ 16 - Netname
- IIJ-CIDR-BLK-JP
- Registrant
- Internet Initiative Japan Inc.
- Registrant country
- JP
- Organization
- Internet Initiative Japan Inc.
- Org country
- JP
- Created
- Not stated by the registry
- Updated
- Aug 1, 2014
- RIR
- APNIC
- Country
- JP
- Delegated
- Mar 1, 1997
- Status
- assigned
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