ResearchRouting table, RPKI, IRR & looking glass

AS203652 IBM United Kingdom Limited

AS203652 (IBMUK) is registered to IBM United Kingdom Limited in GB. It originates 2 prefixes in the global routing table.

2
IPv4 prefixes
0
IPv6 prefixes
512
IPv4 addresses
0%
RPKI valid

Who holds AS203652

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

AS number
AS203652
Handle
IBMUK
Organization
IBM United Kingdom Limited
Country
GB
ASPA
None published

What AS203652 announces

Prefixes originated by AS203652 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
2
IPv6 prefixes
0
IPv4 addresses
512 (2 /24s)
RPKI valid
0 0%
RPKI invalid
0
RPKI not found
2
ROAs naming AS203652
0
With an IRR route object
0 0%

Announced prefixes

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

IPv4 (2)

RPKI valid   RPKI invalid   no ROA covers it

Who AS203652 is reached through

The AS just before AS203652 in the paths our looking glass collectors hold, for 2 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
RIPEIBMUKRIPE-NCC-END-MNT, UUNETDE-I
as-sets that list AS203652 (2)