ResearchRouting table, RPKI, IRR & looking glass

AS18081 Kintetsu Cable Network Co., Ltd.

AS18081 (KCN) is registered to Kintetsu Cable Network Co., Ltd. in JP. It originates 39 prefixes in the global routing table.

38
IPv4 prefixes
1
IPv6 prefixes
442,368
IPv4 addresses
100%
RPKI valid
Registration

Who holds AS18081

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

AS number
AS18081
Handle
KCN
Organization
Kintetsu Cable Network Co., Ltd.
Country
JP
ASPA
None published
Routing

What AS18081 announces

Prefixes originated by AS18081 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
38
IPv6 prefixes
1
IPv4 addresses
442,368 (1,728 /24s)
RPKI valid
39 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS18081
35
With an IRR route object
39 100%
Prefixes

Announced prefixes

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

IPv4 (38)
61.86.0.0/1661.86.0.0/1861.86.64.0/1861.86.128.0/1861.86.192.0/1861.89.0.0/1661.89.0.0/1861.89.64.0/1861.89.128.0/1861.89.192.0/18117.108.0.0/16117.108.0.0/18117.108.64.0/18117.108.128.0/18117.108.192.0/18117.109.0.0/16117.109.0.0/18117.109.64.0/18117.109.128.0/18117.109.192.0/18125.2.32.0/19125.2.64.0/18125.2.64.0/19125.2.96.0/19139.101.0.0/16139.101.0.0/18139.101.64.0/18139.101.128.0/18139.101.192.0/18193.117.0.0/19194.223.192.0/18194.223.192.0/19194.223.224.0/19220.153.0.0/16220.153.0.0/18220.153.64.0/18220.153.128.0/18220.153.192.0/18
IPv6 (1)
2404:ec00::/32

RPKI valid   RPKI invalid   no ROA covers it

Neighbors

Who AS18081 is reached through

The AS just before AS18081 in the paths our looking glass collectors hold, for 39 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

AS2497 IIJ 39AS6939 HURRICANE 38AS4637 ASN-TELSTRA-GLOBAL 25
IRR

Routing registry objects

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

Sourceas-nameMaintained by
APNICKCNMAINT-JPNIC
JPIRRKCNMAINT-AS18081
NTTCOMKCNMAINT-AS18081

Route objects with origin AS18081: JPIRR 42 · APNIC 39 · RADB 38 · NTTCOM 20

as-sets that list AS18081 (12)
AS-HURRICANEV6AS-IIJAS-IIJ6AS-KCNAS-KDDAS-KDDCUSTOMER2AS-KDDI6AS-LEVEL3-ORIGINS-NAAS-REACH-CUSTOMERSAS-TELSTRA-INTL-CUSTOMERSAS2497:AS-IIJAS2497:AS-IIJ6
Tools

Check AS18081 live

ASN lookup and WHOISRPKI validatorASPA validatorIRR lookup