Data as of Nov 8, 2026
203.178.136.0/21
No anonymizer space · no proxy exits in 30 daysWIDE Project · 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 |
|---|---|---|---|---|---|---|
| 203. | 393,216 | JPNIC-NET-JP | Japan Network Information Center | ALLOCATED PORTABLE | — | — |
Network & registry
Announced by
Covering announcement 203.178.128.0/17
- Prefix
- 203.178.128.0/17
- Announced by
- AS2500 WIDE Project
- Type
- Business
- Proxy exits
- 2
- RPKI
- RPKI valid
- Netname
- WIDE-CIDR-BLK-JP
- Registrant
- WIDE Project
- RIR
- APNIC
IPv4 market
Holder
- Organization
- Japan Network Information Center
- Range
- 203.
178. 0. 0 - 203. 183. 255. 255 - Registration type
- ALLOCATED PORTABLE
Origin network
AS2500
JP
- Name
- WIDE Project
- Type
- Business
- Registered
- Apr 5, 2002
- Domain
- wide.ad.jp
- Website
- www.wide.ad.jp/
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 203.178.128.0/17
203.178.128.0/17
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 |
|---|---|---|---|---|
| 203.178.128.0/17 | AS2500 | /17 | APNIC | RPKI valid |
IRR
Route objects on 203.178.128.0/17
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS2500 | RADB | WIDE Project Aggregate for Customer Prefixes | MAINT-AS2500 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 203.
178. 128. 0/ 17 - Netname
- WIDE-CIDR-BLK-JP
- Registrant
- WIDE Project
- Registrant country
- JP
- Organization
- WIDE Project
- Org country
- JP
- Created
- Not stated by the registry
- Updated
- Nov 13, 2004
- RIR
- APNIC
- Country
- JP
- Delegated
- Apr 11, 1996
- Status
- assigned