All ASNs

Autonomous System details for AS17936

AS17936
Cable Television Kani Co.,Ltd. • ctk.ne.jp

AS17936 — Cable Television Kani Co.,Ltd.

AS Name
CTK
Country
Japan (JP)
Website
Number of IPv4
18,432
Number of IPv6
7.92 × 1028
ASN type
ISP
Status
Allocated
Registry
APNIC
Allocated
September 21, 2001
Last updated
August 22, 2024

IP Ranges

5 IPv4 prefixes, 1 IPv6 prefixes
Prefix Company Number of IPs
125.2.208.0/20 Cable Television Kani Co.,Ltd. 4,096
203.104.112.0/20 Cable Television Kani Co.,Ltd. 4,096
203.110.224.0/21 Cable Television Kani Co.,Ltd. 2,048
218.40.240.0/20 Cable Television Kani Co., Inc. 4,096
218.228.80.0/20 Cable Television Kani Co.,Ltd. 4,096
2406:9900::/32 Cable Television Kani Co.,Ltd. 7.92 × 1028

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS17936

0 peers

AS17936 has no peers recorded.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS17936

1 upstreams

AS17936 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS17936 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS17936

0 downstreams

AS17936 has no downstreams recorded.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.

Our IP address tools

Explore all tools

What is my IP?

Discover your public IP address and detailed information about your connection.

CIDR to IP Range Converter (IPv4 and IPv6)

Convert CIDR notation to IP address ranges and vice versa. Useful for network configuration and security.

IP to Hostname/rDNS Lookup

Perform a reverse DNS (rDNS) lookup to get the hostname for an IP address.

IPv6 Expander/Collapser

Expand or collapse IPv6 addresses to their full or shortened forms for better readability and usage.