ResearchRouting table, RPKI, IRR & looking glass

AS198623 ISUMO Ltd

AS198623 (ISUMO-UK) is registered to ISUMO Ltd in GB. It originates 3 prefixes in the global routing table.

3
IPv4 prefixes
0
IPv6 prefixes
4,352
IPv4 addresses
100%
RPKI valid

Who holds AS198623

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

AS number
AS198623
Handle
ISUMO-UK
Organization
ISUMO Ltd
Country
GB
ASPA
None published

What AS198623 announces

Prefixes originated by AS198623 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
3
IPv6 prefixes
0
IPv4 addresses
4,352 (17 /24s)
RPKI valid
3 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS198623
3
With an IRR route object
3 100%

Announced prefixes

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

IPv4 (3)

RPKI valid   RPKI invalid   no ROA covers it

Who AS198623 is reached through

The AS just before AS198623 in the paths our looking glass collectors hold, for 3 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
RIPEISUMO-UKRIPE-NCC-END-MNT, ISUMO-MNT

Route objects with origin AS198623: RIPE 11

as-sets that list AS198623 (5)