Autonomous System

AS18042 Koos Broadband Telecom

ISPActiveTaiwanAPNIC

AS18042 (KBT) is an ISP network operated by Koos Broadband Telecom in Taiwan, registered with APNIC. It has 6 IPv4 prefixes with 123,136 addresses and 1 IPv6 prefix, which makes it the 2,049th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses123,136in 6 prefixes

IPv6 prefixes1≈ 7.9 × 10²⁸ addresses

Size rank#2,049of 82,200 active ASNs

Abuser scoreVery Low0.01% of its addresses flagged · method

Details

OrganizationKoos Broadband Telecom

AS nameKBT

Websitehomeplus.net.tw

Country Taiwan (TW)

Network typeISP

RegistryAPNIC

Abuse contactjacky.ni@homeplus.net.tw

Registered—

Last updated2025-11-06

IPv4 prefixes

6 prefixes · 123,136 addresses

Network	Addresses	First – last address
58.86.0.0/16	65,536	58.86.0.0 – 58.86.255.255
61.67.128.0/17	32,768	61.67.128.0 – 61.67.255.255
61.63.0.0/19	8,192	61.63.0.0 – 61.63.31.255
61.63.32.0/19	8,192	61.63.32.0 – 61.63.63.255
61.63.64.0/19	8,192	61.63.64.0 – 61.63.95.255
103.123.188.0/24	256	103.123.188.0 – 103.123.188.255

58.86.0.0/16
61.67.128.0/17
61.63.0.0/19
61.63.32.0/19
61.63.64.0/19
103.123.188.0/24

IPv6 prefixes

1 prefix

2400:df40::/32

2400:df40::/32

Query AS18042 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.

curl "https://api.ipapi.is/?q=AS18042&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS18042, with or without a key:

curl "https://api.ipapi.is/?q=58.86.0.1"

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