Data as of Nov 13, 2026
152.54.0.0/20
No anonymizer space · no proxy exits in 30 daysMCNC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 152.54.0.0/16 since Sep 2020 | AS81 | Business | 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 |
|---|---|---|---|---|---|---|
| 152.54.0.0/16 | 65,536 | NCREN-B54 | MCNC (MCNC-Z) · US | Direct Allocation | Aug 8, 1994 | abuse@ |
| └ 152.54.0.0/20 | 4,096 | RENCI-NET | Renaissance Computing Institute (RCI-29) · US | Reassigned | Nov 9, 2005 | — |
Network & registry
IPv4 market
Holder
- Organization
- MCNC
- Handle
- MCNC-Z
- Range
- 152.
54. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Aug 8, 1994
- Legacy
- yes
Origin network
AS81
US
- Name
- MCNC
- Type
- Education
- Registered
- Aug 7, 1986
- Domain
- mcnc.org
- Website
- www.mcnc.org
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jan 2006
- Current origin since
- Jan 2006 · 21 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 152.54.0.0/20 | AS81 | /20 | ARIN | RPKI valid |
| 152.54.0.0/16 | AS81 | /16 | ARIN | Too specific |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS81 | ARIN | Autogenerated route object | MNT-MCNC-Z | Feb 12, 2026 |
Whois
Registration for this announcement
- Range
- 152.
54. 0. 0/ 20 - Netname
- RENCI-NET
- Registrant
- Renaissance Computing Institute
- Organization
- Renaissance Computing Institute (RCI-29)
- Org address
- 100 Europa Dr., Chapel Hill, NC, 27517
- Org country
- US
- Type
- Reassigned
- Handle
- NET-152-54-0-0-2
- Parent
- NET-152-54-0-0-1
- Created
- Nov 9, 2005
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 8, 1994
- Status
- assigned
Report abuse
Abuse contact
- abuse@
mcnc. org - Name
- Abuse Contact
- Phone
- +1-919-248-4111
- Handle
- ABUSE3348-ARIN