Data as of Nov 6, 2026
72.43.219.0/24
No anonymizer space · no proxy exits in 30 daysRegeneron Pharmaceuticals Inc. · space held by Charter Communications Inc
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 72.43.192.0/18 since Feb 2006 | AS11351 | Residential | 41 4 always on | Charter Communications Inc |
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 |
|---|---|---|---|---|---|---|
| 72.43.0.0/16 | 65,536 | RCNY | Charter Communications Inc (CC-3517) · US | Direct Allocation | Mar 21, 2005 | abuse@ |
| └ 72.43.219.0/24 | 256 | NET-72-43-219-0 | Regeneron Pharmaceuticals Inc. (RP-30) · US | Reassigned | Apr 27, 2017 | michael. |
Network & registry
IPv4 market
Holder
- Organization
- Charter Communications Inc
- Handle
- CC-3517
- Range
- 72.
43. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Mar 21, 2005
Origin network
AS33759
US
- Name
- Regeneron Pharmaceuticals Inc.
- Type
- Business
- Registered
- Dec 11, 2012
- Domain
- regeneron.com
- Industry
- Health Care Services
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Apr 2016
- Current origin since
- Jun 2017 · 9.4 yr
- Origin networks
- 2
- Last change of origin
- Jun 2017
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 72.43.219.0/24 | AS33759 | /24 | ARIN | RPKI valid |
| 72.43.192.0/18 | AS11351 | /18 | ARIN | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS33759 | RADB | RR-RC-Regeneron Pharmaceuticals, Inc-Tarrytown | MAINT-RR | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 72.
43. 219. 0/ 24 - Netname
- NET-72-43-219-0
- Registrant
- Regeneron Pharmaceuticals Inc.
- Organization
- Regeneron Pharmaceuticals Inc. (RP-30)
- Org address
- 777 Old Saw Mill River Rd., Tarrytown, NY, 10591
- Org country
- US
- Type
- Reassigned
- Handle
- NET-72-43-219-0-1
- Parent
- NET-72-43-0-0-1
- Created
- Apr 27, 2017
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 21, 2005
- Status
- assigned
Report abuse
Abuse contact
- michael.
phillips@ regeneron. com - Name
- Phillips, Michael David
- Phone
- +1-914-847-7000
- Handle
- MDP14-ARIN