ResearchRouting table, RPKI, IRR & looking glass

AS41373 NATIONAL HEALTH SERVICE

AS41373 (BT-Plc) is registered to NATIONAL HEALTH SERVICE in GB. It originates 1 prefix in the global routing table.

1
IPv4 prefixes
0
IPv6 prefixes
256
IPv4 addresses
0%
RPKI valid

Who holds AS41373

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

AS number
AS41373
Handle
BT-Plc
Organization
NATIONAL HEALTH SERVICE
Country
GB
ASPA
None published

What AS41373 announces

Prefixes originated by AS41373 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
256 (1 /24s)
RPKI valid
0 0%
RPKI invalid
0
RPKI not found
1
ROAs naming AS41373
0
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 AS41373 is reached through

The AS just before AS41373 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
RIPEBT-PlcRIPE-NCC-END-MNT, BTNET-MNT

Route objects with origin AS41373: RIPE 2

as-sets that list AS41373 (2)