ResearchRouting table, RPKI, IRR & looking glass

AS201126 CDW Ltd

AS201126 (CDW-UK-AS) is registered to CDW Ltd in GB. It originates 12 prefixes in the global routing table.

12
IPv4 prefixes
0
IPv6 prefixes
4,096
IPv4 addresses
0%
RPKI valid

Who holds AS201126

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS201126
Handle
CDW-UK-AS
Organization
CDW Ltd
Country
GB
ASPA
None published

What AS201126 announces

Prefixes originated by AS201126 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
12
IPv6 prefixes
0
IPv4 addresses
4,096 (16 /24s)
RPKI valid
0 0%
RPKI invalid
0
RPKI not found
12
ROAs naming AS201126
0
With an IRR route object
11 91%

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

Who AS201126 is reached through

The AS just before AS201126 in the paths our looking glass collectors hold, for 12 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.

Sourceas-nameMaintained by
RIPECDW-UK-ASTL-20221116-MNT, RIPE-NCC-END-MNT

Route objects with origin AS201126: RIPE 11

as-sets that list AS201126 (10)