ResearchRouting table, RPKI, IRR & looking glass

AS5623 AT&T Global Network Services Nederland B.V.

AS5623 (ATT-CH-0A) is registered to AT&T Global Network Services Nederland B.V. in NL. It originates 1 prefix in the global routing table.

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

Who holds AS5623

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

AS number
AS5623
Handle
ATT-CH-0A
Organization
AT&T Global Network Services Nederland B.V.
Country
NL
ASPA
None published

What AS5623 announces

Prefixes originated by AS5623 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 AS5623
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 AS5623 buys transit from

Inferred from the AS paths in the RouteViews tables, refreshed every 4 hours, most-seen first. 1 upstream.

Who buys transit from AS5623

None seen: AS5623 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
RIPEATT-CH-0ARIPE-NCC-END-MNT, MAINT-AS2686

Route objects with origin AS5623: RADB 1 · RIPE 1

as-sets that list AS5623 (4)