Data as of Nov 3, 2026
218.45.84.0/22
No anonymizer space · no proxy exits in 30 daysMCAT Ltd. · 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 |
|---|---|---|---|---|---|---|
| 218.40.0.0/13 | 524,288 | JPNIC-NET-JP | Japan Network Information Center | ALLOCATED PORTABLE | — | [email protected] |
Network & registry
Announced by
Covering announcement 218.45.64.0/19
- Prefix
- 218.45.64.0/19
- Announced by
- AS131923 MCAT Ltd.
- Type
- Residential
- RPKI
- RPKI valid
- Netname
- MCAT-CIDR-BLK-JP
- Registrant
- MCAT Ltd.
- RIR
- APNIC
IPv4 market
Holder
- Organization
- Japan Network Information Center
- Range
- 218.40.0.0/13
- Registration type
- ALLOCATED PORTABLE
Origin network
AS131923
JP
- Name
- MCAT Ltd.
- Type
- Internet provider
- Registered
- Aug 4, 2011
- Domain
- mcat.co.jp
- Website
- www.mcat.co.jp/
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 218.45.64.0/19
218.45.64.0/19
Routing history
- Pattern
- Rotating
- First seen
- May 2005
- Current origin since
- Feb 2023 · 3.7 yr
- Origin networks
- 3
- Last change of origin
- Feb 2023
Recorded history
History
- Handoffs
- 2
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 218.45.64.0/19 | AS131923 | /25 | APNIC | RPKI valid |
IRR
Route objects on 218.45.64.0/19
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS131923 | JPIRR | MCAT Ltd. CIDR-block NO.104 | MAINT-AS131923 | Mar 1, 2026 |
Whois
Registration for this announcement
- Range
- 218.45.64.0/19
- Netname
- MCAT-CIDR-BLK-JP
- Registrant
- MCAT Ltd.
- Registrant country
- JP
- Organization
- MCAT Ltd.
- Org country
- JP
- Created
- Not stated by the registry
- Updated
- Dec 12, 2022
- RIR
- APNIC
- Country
- JP
- Delegated
- May 31, 2001
- Status
- assigned
Report abuse
Abuse contact
- [email protected]