ResearchRouting table, RPKI, IRR & looking glass

AS36574 Hearst-Argyle Television, Inc.

AS36574 (WYFF-TV) is registered to Hearst-Argyle Television, Inc. in US. It originates 2 prefixes in the global routing table.

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

Who holds AS36574

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

AS number
AS36574
Handle
WYFF-TV
Organization
Hearst-Argyle Television, Inc.
Country
US
ASPA
None published

What AS36574 announces

Prefixes originated by AS36574 in the routing table our collectors hold (kept current as routes change), 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 AS36574
0
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 AS36574 buys transit from

Inferred from the AS paths in the RouteViews tables and our own collectors’ feeds, refreshed every 4 hours, most-seen first. 2 upstreams.

Who buys transit from AS36574

None seen: AS36574 does not appear to provide transit to anyone.

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.

Sourceas-nameMaintained by
RADBSpectrum-CommercialMAINT-CHTR-WD

Route objects with origin AS36574: RADB 2

as-sets that list AS36574 (3)