AS4158
City University of Hong Kong
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
- Academic allocation +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 144.214.0.0/16 | 65.5K |
7.6%
|
City University of Hong Kong | HK | Kowloon City | Kai Tak |
| 175.159.64.0/19 | 8.2K |
0.0%
|
City University of Hong Kong | HK | Kowloon City | Kowloon Tong |
| 175.159.200.0/21 | 2.0K |
0.1%
|
City University of Hong Kong | HK | Kowloon City | Kowloon Tong |
| 202.125.216.0/21 | 2.0K |
0.0%
|
City University of Hong Kong | HK | Kowloon City | Kowloon Tong |
| 203.188.80.0/21 | 2.0K |
0.0%
|
City University of Hong Kong | HK | Kowloon City | Kowloon Tong |
| 175.159.208.0/22 | 1.0K |
0.0%
|
City University of Hong Kong | HK | — | — |
| 202.125.252.0/22 | 1.0K |
0.0%
|
City University of Hong Kong | HK | Kowloon City | Kowloon Tong |
| 203.188.88.0/22 | 1.0K |
0.6%
|
City University of Hong Kong | HK | Kowloon City | Kowloon Tong |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS4158 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 |
|---|---|---|
| 144.214.245.0/24 | 46,782 | 2026-07-17 01:37:36 |
| 144.214.120.0/24 | 15,167 | 2026-06-18 06:35:15 |
| 144.214.126.0/24 | 10,904 | 2026-07-11 02:43:42 |
| 203.188.80.0/21 | 10,383 | 2026-07-19 16:34:43 |
| 203.188.88.0/22 | 10,289 | 2026-07-19 16:34:43 |
| 202.125.252.0/22 | 10,240 | 2026-07-19 16:34:43 |
| 202.125.216.0/21 | 10,233 | 2026-07-19 16:34:43 |
| 144.214.0.0/16 | 9,725 | 2026-07-19 16:34:55 |
| 175.159.200.0/21 | 9,633 | 2026-07-19 16:34:43 |
| 175.159.208.0/22 | 9,570 | 2026-07-19 16:34:43 |
| 175.159.64.0/19 | 9,567 | 2026-07-19 16:34:43 |
| 144.214.153.0/24 | 2,978 | 2026-06-09 22:18:25 |
| 144.214.37.0/24 | 2,800 | 2026-06-18 06:02:52 |
| 175.159.202.0/24 | 2,797 | 2026-05-29 09:10:43 |
| 144.214.110.0/24 | 2,656 | 2026-06-22 07:28:51 |
| 144.214.100.0/24 | 2,589 | 2026-07-18 16:26:23 |
| 144.214.91.0/24 | 2,532 | 2026-06-16 00:42:23 |
| 144.214.124.0/24 | 2,516 | 2026-06-04 06:09:45 |
| 203.188.112.128/27 | 266 | 2026-07-19 16:19:44 |
| 203.188.112.112/28 | 17 | 2026-07-09 05:54:41 |
Frequently Asked Questions
What is AS4158?
AS4158 is an Autonomous System Number assigned to City University of Hong Kong. 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 AS4158 announce?
AS4158 announces 82.9K IPv4 addresses distributed across 8 routed CIDR prefixes. The network is registered in Hong Kong.
Who operates AS4158?
AS4158 is operated by City University of Hong Kong. The organization is based in Hong Kong. You can view all IP ranges and related ASNs on the organization page.
What country is AS4158 registered in?
AS4158 is registered in Hong Kong. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
