Data as of Nov 8, 2026
219.100.157.0/24
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 |
|---|---|---|---|---|---|---|
| 219.96.0.0/11 | 2,097,152 | JPNIC-NET-JP | Japan Network Information Center | ALLOCATED PORTABLE | — | hostmaster@ |
Network & registry
Announced by
Covering announcement 219.100.156.0/22
- Prefix
- 219.100.156.0/22
- Announced by
- AS131923 MCAT Ltd.
- Type
- Residential
- Proxy exits
- 3
- RPKI
- RPKI valid
- Netname
- MCAT
- Registrant
- MCAT Ltd.
- RIR
- APNIC
IPv4 market
Holder
- Organization
- Japan Network Information Center
- Range
- 219.
96. 0. 0/ 11 - 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 219.100.156.0/22
219.100.156.0/22
Routing history
- Pattern
- Stable
- First seen
- Dec 2017
- Current origin since
- Dec 2017 · 8.9 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 219.100.156.0/22 | AS131923 | /25 | APNIC | RPKI valid |
IRR
Route objects on 219.100.156.0/22
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS131923 | JPIRR | MCAT Ltd. CIDR-block NO.2 | MAINT-AS131923 | Mar 1, 2026 |
Whois
Registration for this announcement
- Range
- 219.
100. 156. 0/ 22 - Netname
- MCAT
- Registrant
- MCAT Ltd.
- Registrant country
- JP
- Organization
- MCAT Ltd.
- Org country
- JP
- Created
- Not stated by the registry
- Updated
- Sep 20, 2024
- RIR
- APNIC
- Country
- JP
- Delegated
- Mar 7, 2002
- Status
- assigned