AS131923 MCAT Ltd. 🇯🇵 JP
Announcing 11 prefixes, seen at the RIS collectors.
IPv4 prefixes
10
22,528 (88 × /24)
IPv6 prefixes
1
1 × /32
Upstreams
4
transit providers observed
Peers
2
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS131923
- Name
- MCAT Ltd.
- Organisation
- MCAT Ltd.
- Country
- 🇯🇵 JP
- RIR
- APNIC
- Allocated
- 2011-08-04
- Network type
- Cable/DSL/ISP
- Traffic levels
- 10-20Gbps
- Scope
- Regional
- Peering policy
- Open
- IRR as-set
- JPIRR::AS-131923
- Website
- https://www.mcat.co.jp/
- PeeringDB
- net/14874
- Exchanges
- 6
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
11 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 103.95.104.0/22 v4 | RPKI valid | 41 | 24482131923 | 2026-09-18 |
| 120.50.192.0/20 v4 | RPKI valid | 41 | 24482131923 | 2026-09-18 |
| 133.88.87.0/24 v4 | RPKI valid | 41 | 24482131923 | 2026-09-18 |
| 133.88.88.0/22 v4 | RPKI valid | 41 | 24482131923 | 2026-09-18 |
| 133.88.92.0/23 v4 | RPKI valid | 41 | 24482131923 | 2026-09-18 |
| 133.88.94.0/24 v4 | RPKI valid | 41 | 24482131923 | 2026-09-18 |
| 133.247.136.0/21 v4 | RPKI valid | 41 | 24482131923 | 2026-09-18 |
| 133.247.240.0/20 v4 | RPKI valid | 41 | 24482131923 | 2026-09-18 |
| 218.45.64.0/19 v4 | RPKI valid | 41 | 24482131923 | 2026-09-18 |
| 219.100.156.0/22 v4 | RPKI valid | 41 | 24482131923 | 2026-09-18 |
| 2401:5ac0::/32 v6 | RPKI valid | 33 | 24482131923 | 2026-09-18 |