Data as of Nov 8, 2026
156.111.192.0/18
No anonymizer space · no proxy exits in 30 daysNewYork-Presbyterian Hospital · space held by The Trustees of Columbia University in the City of New York
Announcement
this exact prefix
No RPKI
Announced by
Type
Business
Recent change
New origin Jun 2026
from AS395139 NewYork-Presbyterian Hospital
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 156.111.128.0/17 since Sep 18, 2026 | AS395139 | Business | The Trustees of Columbia University in the City of New York | ||
| 156.111.0.0/16 since Oct 2016 | AS395139 | Business | 8 | The Trustees of Columbia University in the City of New York |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 156.111.228.0/24 since May 2024 | AS395139 | Business | The Trustees of Columbia University in the City of New York |
Network & registry
Origin network
AS395139
US
- Name
- NewYork-Presbyterian Hospital
- Type
- Business
- Registered
- Sep 7, 2016
- Domain
- nyp.org
- Industry
- Retail Stores, Wholesale, and E-commerce Sites
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Mar 2025
- Current origin since
- Jun 2026 · 5 mo
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 156.
111. 0. 0/ 16 - Netname
- CPMC
- Registrant
- The Trustees of Columbia University in the City of New York
- Organization
- The Trustees of Columbia University in the City of New York (CMC-28)
- Org address
- 630 West 168th Street, New York, NY, 10032
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-156-111-0-0-1
- Parent
- NET-156-0-0-0-0
- Created
- Jan 6, 1992
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 6, 1992
- Status
- assigned
Report abuse
Abuse contact
- spam@
nyp. org - Name
- New York Presbyterian Hospital
- Phone
- +1-212-305-3855
- Handle
- ZN80-ARIN