Data as of Nov 13, 2026
209.129.40.0/22
No anonymizer space · no proxy exits in 30 daysCENIC
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 209.129.40.0/23 | AS2152 | Business | CENIC | |
| 209.129.42.0/23 | AS2152 | Business | CENIC |
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 |
|---|---|---|---|---|---|---|
| 209.129.0.0/16 | 65,536 | CENIC | CENIC (CENIC) · US | Direct Allocation | Jul 8, 2024 | abuse@ |
| └ 209.129.40.0/22 | 1,024 | SOU-CC-209-129-40-43 | Southwestern College (C02459633) · US | Reassigned | Apr 9, 2010 | abuse@ via CENIC |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Announced by
Covering announcement 209.129.0.0/16
- Prefix
- 209.129.0.0/16
- Announced by
- AS2152 CENIC
- Type
- Business
- Proxy exits
- 74
- RPKI
- No RPKI
- Netname
- CENIC
- Registrant
- CENIC
- RIR
- ARIN
Routing timeline
Who has announced 209.129.0.0/16
209.129.0.0/16
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
IRR
Route objects on 209.129.0.0/16
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS2152 | RADB | NETBLK-CSUNET-SOUTH | MAINT-AS2150 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 209.
129. 0. 0/ 16 - Netname
- CENIC
- Registrant
- CENIC
- Organization
- CENIC (CENIC)
- Org address
- 5757 Plaza Drive, Suite 205, Cypress, CA, 90630-5029
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-209-129-0-0-1
- Parent
- NET-209-0-0-0-0
- Created
- Jul 8, 2024
- RIR
- ARIN
- Country
- US
- Delegated
- Jul 8, 2024
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cenic. org - Name
- CENIC Abuse
- Phone
- +1-714-220-3494
- Handle
- ABUSE711-ARIN