Data as of Nov 9, 2026
140.247.174.0/24
No anonymizer space · no proxy exits in 30 daysHarvard University
Announcement
this exact prefix
RPKI valid
Announced by
Type
Business
Risk
0 / 100 · Low
Recent change
New origin Sep 18, 2026
from AS1742 Harvard University, after 5.2 years unannounced
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 140.247.0.0/16 since Oct 2010 | AS1742 | Business | 5 1 always on | Harvard University |
Network & registry
Origin network
AS1742
US
- Name
- Harvard University
- Type
- Education
- Registered
- Feb 19, 1992
- Domain
- harvard.edu
- Industry
- Colleges, Universities, and Professional Schools
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jun 2021
- Current origin since
- Sep 18, 2026 · 2 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 140.247.0.0/16 | AS1742 | /24 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 140.
247. 0. 0/ 16 - Netname
- HARVARD-UNIV
- Registrant
- Harvard University
- Organization
- Harvard University (HARVAR-Z)
- Org address
- HUIT Network Services, Cambridge, MA, 02139
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-140-247-0-0-1
- Parent
- NET-140-0-0-0-0
- Created
- Sep 18, 1992
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 18, 1992
- Status
- assigned
Report abuse
Abuse contact
- abuse@
harvard. edu - Name
- Abuse
- Phone
- +1-617-495-3574
- Handle
- ABUSE3331-ARIN