Data as of Nov 4, 2026
209.146.51.0/24
No anonymizer space · no proxy exits in 30 daysWIZ K.K. · space held by Cogent Communications, LLC
Announcement
this exact prefix
No RPKI
Announced by
Type
Business
Risk
0 / 100 · Low
Recent change
New origin Oct 10, 2026
from AS54415 WIZ K.K.
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 209.146.0.0/17 since May 2005 | AS174 | Internet provider | 63 13 always on | Cogent Communications, LLC |
Network & registry
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jan 2025
- Current origin since
- Oct 10, 2026 · under a month
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS54415 | RADB | Registered for Cogent Communications Customer - Mempool Space K.K. | MAINT-AS174 | Jan 14, 2025 |
Whois
Registration for this announcement
- Range
- 209.146.0.0/17
- Netname
- COGENT-IDCI-0001
- Registrant
- Cogent Communications, LLC
- Organization
- Cogent Communications, LLC (COGC)
- Org address
- 2450 N Street NW, Washington, DC, 20037
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-209-146-0-0-1
- Parent
- NET-209-0-0-0-0
- Created
- Oct 3, 1997
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 3, 1997
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- Cogent Abuse
- Phone
- +1-877-875-4311
- Handle
- COGEN-ARIN