ResearchRouting table, RPKI, IRR & looking glass

AS51983 Sargasso N1 Limited

AS51983 (SARGASSO-DE-AS) is registered to Sargasso N1 Limited in GB. It originates 1 prefix in the global routing table.

1
IPv4 prefixes
0
IPv6 prefixes
512
IPv4 addresses
100%
RPKI valid

Who holds AS51983

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

AS number
AS51983
Handle
SARGASSO-DE-AS
Organization
Sargasso N1 Limited
Country
GB
ASPA
None published

What AS51983 announces

Prefixes originated by AS51983 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
1
IPv6 prefixes
0
IPv4 addresses
512 (2 /24s)
RPKI valid
1 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS51983
1
With an IRR route object
1 100%

Announced prefixes

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

IPv4 (1)

RPKI valid   RPKI invalid   no ROA covers it

Who AS51983 is reached through

The AS just before AS51983 in the paths our looking glass collectors hold, for 1 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
RIPESARGASSO-DE-ASRIPE-NCC-END-MNT, SARGASSO-MNT

Route objects with origin AS51983: RIPE 1

as-sets that list AS51983 (1)