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Data as of Nov 6, 2026

206.203.64.0/18

No anonymizer space · no proxy exits in 30 days

Level 3 Parent, LLC · space held by McKesson Corp.

Announcement
this exact prefix
No RPKI
Announced by
AS203
Type
Business
89% of it
Recent change
New origin Aug 2026
from AS10599 McKesson Corp.

Announcements

Nesting

More-specifics by size

Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific

Announcements inside

PrefixOriginTypeHolderRPKI
206.203.65.0/24
since Jan 2018
AS10599BusinessMcKesson Corp.
206.203.67.0/24
since Feb 2018
AS10599BusinessMcKesson Corp.
206.203.73.0/24
since Apr 2018
AS10599BusinessMcKesson Corp.
206.203.74.0/24
since May 2020
AS10599BusinessMcKesson Corp.
206.203.78.0/24
since Feb 2025
AS10599BusinessMcKesson Corp.
206.203.80.0/24
since Apr 2019
AS27451BusinessMcKesson Corp.
206.203.81.0/24
since Feb 2026
AS27451BusinessMcKesson Corp.
206.203.88.0/24
since Nov 2025
AS8075HostingMcKesson Corp.
206.203.89.0/24
since Nov 2025
AS8075HostingMcKesson Corp.
206.203.90.0/24
since Nov 2025
AS8075HostingMcKesson Corp.
206.203.91.0/24
since Nov 2025
AS8075HostingMcKesson Corp.
206.203.92.0/24
since Nov 2025
AS8075HostingMcKesson Corp.
206.203.93.0/24
since Nov 2025
AS8075HostingMcKesson Corp.
206.203.123.0/24
since Apr 2025
AS8075HostingMcKesson Corp.

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.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
206.203.64.0/1816,384CPG-REMOTEMcKesson Corp. (MCKESS) · USDirect AllocationAug 2, 1995NetworkInfrastructureTeam2@mckesson.com
└ 206.203.88.0/24256MCK-US-AZE1-ALK1Mckesson Corp. (C11424209) · USReassignedNov 18, 2025NetworkInfrastructureTeam2@mckesson.com
via CPG-REMOTE
└ 206.203.89.0/24256MCK-US-AZE1-ALK2Mckesson Corp. (C11427217) · USReassignedNov 19, 2025NetworkInfrastructureTeam2@mckesson.com
via CPG-REMOTE
└ 206.203.90.0/24256MCK-US-AZW3-ALK1Mckesson Corp. (C11428360) · USReassignedNov 20, 2025NetworkInfrastructureTeam2@mckesson.com
via CPG-REMOTE
└ 206.203.91.0/24256MCK-US-AZW3-ALK2Mckesson Corp. (C11428361) · USReassignedNov 20, 2025NetworkInfrastructureTeam2@mckesson.com
via CPG-REMOTE
└ 206.203.92.0/24256MCK-SPL-US-AZE1-ALK1Mckesson Corp. (C11428362) · USReassignedNov 20, 2025NetworkInfrastructureTeam2@mckesson.com
via CPG-REMOTE
└ 206.203.93.0/24256MCK-SPL-US-AZW3-ALK1McKesson Corp. (C11428363) · USReassignedNov 20, 2025NetworkInfrastructureTeam2@mckesson.com
via CPG-REMOTE
└ 206.203.123.0/24256MCK-AZ-WUS-01McKesson Corp. (C11166202) · USReassignedApr 10, 2025NetworkInfrastructureTeam2@mckesson.com
via CPG-REMOTE

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

16,384 addresses
TypeAddressesShareRanges
Business14,59289%15
Hosting1,79211%7

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
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