Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Isp allocation +5
- Trust score 70 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 1 internet exchange: TWIX
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 58.86.0.0/16 | 65.5K |
94.2%
|
Koos Broadband Telecom | TW | Taoyuan | Luzhu |
| 61.67.128.0/17 | 32.8K |
89.3%
|
Koos Broadband Telecom | TW | Taipei City | Daan |
| 61.63.0.0/18 | 16.4K |
81.8%
|
Koos Broadband Telecom | TW | Taipei City | Taipei |
| 61.63.64.0/19 | 8.2K |
86.1%
|
Koos Broadband Telecom | TW | — | — |
| 103.123.188.0/24 | 256 |
20.7%
|
Koos Broadband Telecom | TW | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS18042 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 61.67.128.0/17 | 4,358 | 2026-07-20 09:18:37 |
| 61.63.0.0/19 | 4,331 | 2026-07-20 09:21:56 |
| 58.86.0.0/16 | 3,831 | 2026-07-20 09:19:06 |
| 61.63.32.0/19 | 3,818 | 2026-07-20 09:20:58 |
| 61.63.64.0/19 | 3,808 | 2026-07-20 09:20:03 |
| 103.123.188.0/24 | 3,798 | 2026-07-20 09:17:43 |
| 203.204.201.0/24 | 7 | 2026-07-14 22:13:53 |
| 61.71.32.0/19 | 7 | 2026-07-14 22:13:55 |
| 203.204.200.0/24 | 7 | 2026-07-14 22:13:53 |
| 61.63.87.0/24 | 7 | 2026-07-14 22:13:53 |
| 219.71.0.0/18 | 7 | 2026-07-14 22:13:55 |
| 203.204.202.0/24 | 7 | 2026-07-14 22:13:53 |
| 182.234.0.0/19 | 7 | 2026-07-14 22:13:55 |
| 203.204.207.0/24 | 7 | 2026-07-14 22:13:53 |
| 203.203.203.0/24 | 4 | 2026-06-29 03:40:45 |
| 61.70.0.0/16 | 1 | 2026-06-24 08:46:47 |
| 182.233.128.0/17 | 1 | 2026-06-22 02:40:59 |
| 61.71.0.0/18 | 1 | 2026-06-24 08:46:47 |
| 182.233.0.0/16 | 1 | 2026-06-22 02:40:59 |
| 61.71.128.0/17 | 1 | 2026-06-24 08:46:47 |
Frequently Asked Questions
What is AS18042?
AS18042 is an Autonomous System Number assigned to Koos Broadband Telecom. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS18042 announce?
AS18042 announces 123.1K IPv4 addresses distributed across 5 routed CIDR prefixes. The network is registered in Taiwan.
Who operates AS18042?
AS18042 is operated by Koos Broadband Telecom. The organization is based in Taiwan. You can view all IP ranges and related ASNs on the organization page.
What country is AS18042 registered in?
AS18042 is registered in Taiwan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
