ResearchRouting table, RPKI, IRR & looking glass

AS204536 TSFY Ltd

AS204536 (tsfy) is registered to TSFY Ltd in IE. It originates 2 prefixes in the global routing table.

2
IPv4 prefixes
0
IPv6 prefixes
1,024
IPv4 addresses
100%
RPKI valid

Who holds AS204536

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

AS number
AS204536
Handle
tsfy
Organization
TSFY Ltd
Country
IE
ASPA
None published

What AS204536 announces

Prefixes originated by AS204536 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
1,024 (4 /24s)
RPKI valid
2 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS204536
6
With an IRR route object
2 100%

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 AS204536 is reached through

The AS just before AS204536 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
RIPEtsfyRIPE-NCC-END-MNT, IE-TSFYLTD-1-MNT

Route objects with origin AS204536: RIPE 5 · ARIN 1

as-sets that list AS204536 (8)