Data as of Nov 8, 2026
47.19.120.0/24
No anonymizer space · no proxy exits in 30 daysMemorial Sloan-Kettering Cancer Center · space held by Cablevision Lightpath LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 47.19.0.0/16 since Feb 2026 | AS54004 | Business | 128 17 always on | Cablevision Lightpath LLC via Cablevision Systems Corp. | |
| 47.16.0.0/14 since Oct 2014 | AS6128 | Residential | 4,546 1,047 always on |
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 |
|---|---|---|---|---|---|---|
| 47.19.0.0/16 | 65,536 | LP-47-19-0-0-16 | Cablevision Lightpath LLC (CLL-174) | Direct Allocation | Feb 29, 2012 | abuses@ |
| └ 47.19.0.0/16 | 65,536 | OOL-CPE-LP-47-19-0-0-16 | Cablevision Systems Corp. (CVNT) · US | Reallocated | Aug 7, 2013 | abuse@ |
| └ 47.19.120.0/24 | 256 | CVNET-2F137800 | Memorial Sloan-Kettering Cancer Center (C06878503) · US | Reassigned | Jan 18, 2018 | abuse@ via LP-47-19-0-0-16 |
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
Registry
Holder
- Organization
- Cablevision Lightpath LLC
- Handle
- CLL-174
- Range
- 47.
19. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Feb 29, 2012
- Reallocated to
- Cablevision Systems Corp. (CVNT)
- Reallocated
- Aug 7, 2013
Origin network
AS14822
US
- Name
- Memorial Sloan-Kettering Cancer Center
- Type
- Business
- Registered
- Dec 6, 2021
- Domain
- mskcc.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
- Jun 2014
- Current origin since
- May 2025 · 1.5 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 47.19.120.0/24 | AS14822 | /24 | ARIN | RPKI valid |
| 47.19.0.0/16 | AS54004 | /24 | ARIN | Another network |
Whois
Registration for this announcement
- Range
- 47.
19. 120. 0/ 24 - Netname
- CVNET-2F137800
- Registrant
- Memorial Sloan-Kettering Cancer Center
- Organization
- Memorial Sloan-Kettering Cancer Center (C06878503)
- Type
- Reassigned
- Handle
- NET-47-19-120-0-1
- Parent
- NET-47-19-0-0-1
- Created
- Jan 18, 2018
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 29, 2012
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cv. net - Name
- OOL Hostmaster
- Phone
- +1-516-803-2400
- Handle
- OOLAB-ARIN