Data as of Nov 13, 2026
143.112.76.0/24
No anonymizer space · no proxy exits in 30 daysLevel 3 Parent, LLC · space held by McKesson Corp.
Announced by
Type
Business
Risk
30 / 100 · Medium
Recently moved
Recent change
New origin Aug 2026
from AS10599 McKesson Corp.
Network & registry
Announced by
Covering announcement 143.112.0.0/17
- Prefix
- 143.112.0.0/17
- Announced by
- AS203 Level 3 Parent, LLC
- Type
- Business
- RPKI
- RPKI valid
- Netname
- MCK-143-112-0-0
- Registrant
- McKesson Corp.
- RIR
- ARIN
Origin network
AS203
US
- Name
- Level 3 Parent, LLC
- Type
- Internet provider
- Registered
- Jun 5, 2002
- Domain
- level3.com
- Industry
- Hosting and Cloud Provider
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 143.112.0.0/17
143.112.0.0/17
Routing history
- Pattern
- Rotating
- First seen
- May 2009
- Current origin since
- Aug 2026 · 3 mo
- Origin networks
- 2
- Last change of origin
- Aug 2026
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 143.112.0.0/17 | AS202 | /22 | ARIN | Another network |
| 143.112.0.0/17 | AS203 | /22 | ARIN | RPKI valid |
| 143.112.0.0/17 | AS3356 | /22 | ARIN | Another network |
| 143.112.0.0/17 | AS10599 | /22 | ARIN | Another network |
IRR
Route objects on 143.112.0.0/17
Whois
Registration for this announcement
- Range
- 143.
112. 0. 0/ 16 - Netname
- MCK-143-112-0-0
- Registrant
- McKesson Corp.
- Organization
- McKesson Corp. (MCKESS)
- Org address
- 6535 N. State Highway 161, Irving, TX, 75039
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-143-112-0-0-1
- Parent
- NET-143-0-0-0-0
- Created
- Sep 17, 1990
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 17, 1990
- Status
- assigned
Report abuse
Abuse contact
- NetworkInfrastructureTeam2@
mckesson. com - Name
- Network Infrastructure Team
- Phone
- +1-972-446-4800;extN/
A - Handle
- NIT2-ARIN