Data as of Nov 7, 2026
152.22.224.0/20
No anonymizer space · no proxy exits in 30 daysDuke University · space held by MCNC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 152.22.0.0/16 since Jan 2019 | AS81 | Business | 45 | MCNC |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 152.22.0.0/16 | 65,536 | NCREN-B22 | MCNC (MCNC-Z) · US | Direct Allocation | Aug 8, 1994 | abuse@ |
| └ 152.22.224.0/20 | 4,096 | NCREN-DUKE-PARALLEL-IPV4-1 | Duke University (DUKEUN) · US | Reassigned | Dec 3, 2021 | datacom-hostmaster@ |
Network & registry
IPv4 market
Holder
- Organization
- MCNC
- Handle
- MCNC-Z
- Range
- 152.
22. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Aug 8, 1994
- Legacy
- yes
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Sep 2024
- Current origin since
- Nov 2025 · 12 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 152.22.224.0/20 | AS13371 | /20 | ARIN | RPKI valid |
| 152.22.0.0/16 | AS81 | /16 | ARIN | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS13371 | ARIN | Autogenerated route object | MNT-MCNC-Z | Feb 12, 2026 |
Whois
Registration for this announcement
- Range
- 152.
22. 224. 0/ 20 - Netname
- NCREN-DUKE-PARALLEL-IPV4-1
- Registrant
- Duke University
- Organization
- Duke University (DUKEUN)
- Org address
- 334 Blackwell St., Durham, NC, 27701
- Org country
- US
- Type
- Reassigned
- Handle
- NET-152-22-224-0-1
- Parent
- NET-152-22-0-0-1
- Created
- Dec 3, 2021
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 8, 1994
- Status
- assigned
Report abuse
Abuse contact
- datacom-hostmaster@
duke. edu - Name
- Duke University Hostmaster
- Phone
- +1-919-684-2200
- Handle
- DUH2-ARIN