ResearchRouting table, RPKI, IRR & looking glass

AS6639 Cable & Wireless (Cayman Islands) Ltd.

AS6639 (CWCAYMAN) is registered to Cable & Wireless (Cayman Islands) Ltd. in KY. It originates 41 prefixes in the global routing table.

25
IPv4 prefixes
16
IPv6 prefixes
27,904
IPv4 addresses
68%
RPKI valid
Registration

Who holds AS6639

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

AS number
AS6639
Handle
CWCAYMAN
Organization
Cable & Wireless (Cayman Islands) Ltd.
Country
KY
ASPA
None published
Routing

What AS6639 announces

Prefixes originated by AS6639 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
25
IPv6 prefixes
16
IPv4 addresses
27,904 (109 /24s)
RPKI valid
28 68%
RPKI invalid
0
RPKI not found
13
ROAs naming AS6639
9
With an IRR route object
8 19%
Prefixes

Announced prefixes

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

IPv4 (25)
63.136.112.0/2167.213.154.0/2467.213.155.0/2467.213.157.0/2467.213.159.0/2467.230.126.0/24162.211.136.0/23162.211.138.0/23192.0.4.0/22199.73.60.0/22199.201.84.0/22208.157.144.0/21208.168.224.0/21208.168.232.0/21208.168.240.0/21208.168.248.0/21208.169.64.0/19208.169.64.0/24208.169.65.0/24208.169.86.0/23208.169.88.0/22208.169.92.0/23208.169.94.0/23209.27.52.0/22209.27.60.0/22
IPv6 (16)
2606:600::/362606:600:1000::/362606:600:2000::/362606:600:3000::/362606:600:4000::/362606:600:5000::/362606:600:6000::/362606:600:7000::/362606:600:8000::/362606:600:9000::/362606:600:a000::/362606:600:b000::/362606:600:c000::/362606:600:d000::/362606:600:e000::/362606:600:f000::/36

RPKI valid   RPKI invalid   no ROA covers it

Neighbors

Who AS6639 is reached through

The AS just before AS6639 in the paths our looking glass collectors hold, for 41 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

AS23520 LIBERTY-NETWORKS 41
IRR

Routing registry objects

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

Route objects with origin AS6639: RADB 5 · LEVEL3 4

as-sets that list AS6639 (8)
AS-CWCTRANSITAS-CWCUSTUSAS-CWICAAS-CWJAMAICAAS-LEVEL3-ORIGINS-EUAS-LEVEL3-ORIGINS-NAAS-NWN-TRANSITAS-TMPEBONECWIX
Tools

Check AS6639 live

ASN lookup and WHOISRPKI validatorASPA validatorIRR lookup