ResearchRouting table, RPKI, IRR & looking glass

AS4997 Zayo Bandwidth

AS4997 (AFS-WEST) is registered to Zayo Bandwidth in US. It originates 26 prefixes in the global routing table.

26
IPv4 prefixes
0
IPv6 prefixes
22,784
IPv4 addresses
100%
RPKI valid
Registration

Who holds AS4997

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

AS number
AS4997
Handle
AFS-WEST
Organization
Zayo Bandwidth
Country
US
ASPA
None published
Routing

What AS4997 announces

Prefixes originated by AS4997 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
26
IPv6 prefixes
0
IPv4 addresses
22,784 (89 /24s)
RPKI valid
26 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS4997
29
With an IRR route object
7 26%
Prefixes

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

IPv4 (26)
208.39.192.0/23208.39.194.0/23208.39.196.0/22208.39.199.0/24208.39.218.0/24208.39.222.0/24208.39.224.0/22208.39.228.0/24208.39.229.0/24208.39.232.0/21208.39.246.0/24208.39.247.0/24208.39.248.0/22208.39.249.0/24208.39.252.0/22208.39.255.0/24216.222.0.0/20216.222.13.0/24216.222.24.0/22216.222.32.0/23216.222.36.0/22216.222.40.0/21216.222.48.0/20216.222.90.0/23216.222.92.0/23216.222.101.0/24

RPKI valid   RPKI invalid   no ROA covers it

Neighbors

Who AS4997 is reached through

The AS just before AS4997 in the paths our looking glass collectors hold, for 26 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

AS6461 ZAYO-6461 26
IRR

Routing registry objects

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

Route objects with origin AS4997: LEVEL3 18 · ARIN 2 · BBOI 2

as-sets that list AS4997 (4)
AS-AS209-CUSTAS-AS23005AS-BTN-CUSTOMERSAS-LEVEL3-ORIGINS-NA
Tools

Check AS4997 live

ASN lookup and WHOISRPKI validatorASPA validatorIRR lookup