$ query “AS18042” --type=asn → 1 result(s)
AS18042 · KBT
Koos Broadband Telecom
AS18042 is owned by Koos Broadband Telecom and is a stub network, registered in Taiwan. The system announces a solid 123 136 IPv4 addresses, including a /16, and supports IPv6. Its primary geographic footprint is in Taiwan.
Basic Information
- Country
- 🇹🇼 Taiwan
- Category
- Internet Service Provider
- Network Role
- Stub Network
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Last Changed
- April 01, 2026
- Last Seen
- May 18, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 6 / 5
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 123 136
- Largest IPv4 Prefix
- /16 (65 536 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇹🇼 Taiwan (188 672 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 2 upstreams providing transit
- Peers
- 2 networks exchanging traffic without transit
- Degree
- 4 unique BGP neighbors
- Reach
- 0 networks in customer cone
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (6 total)
- 58.86.0.0/16 (65 536 addresses (/16 prefix))
- 61.67.128.0/17 (32 768 addresses (/17 prefix))
- 61.63.0.0/18 (16 384 addresses (/18 prefix))
- 61.63.64.0/19 (8 192 addresses (/19 prefix))
- 103.123.188.0/24 (256 addresses (/24 prefix))
IPv6 Prefixes (1 total)
- 2400:df40::/32