ResearchRouting table, RPKI, IRR & looking glass

AS20539 Technical Centre Radio Systems Ltd.

AS20539 (TCRS-AS) is registered to Technical Centre Radio Systems Ltd. in UA. It originates 22 prefixes in the global routing table.

21
IPv4 prefixes
1
IPv6 prefixes
12,800
IPv4 addresses
100%
RPKI valid

Who holds AS20539

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

AS number
AS20539
Handle
TCRS-AS
Organization
Technical Centre Radio Systems Ltd.
Country
UA
ASPA
None published

What AS20539 announces

Prefixes originated by AS20539 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
21
IPv6 prefixes
1
IPv4 addresses
12,800 (50 /24s)
RPKI valid
22 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS20539
23
With an IRR route object
22 100%

Who AS20539 is reached through

The AS just before AS20539 in the paths our looking glass collectors hold, for 22 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.