AS4158
City University of Hong Kong — cityu.edu.hk
Summary
| Country |
 Hong Kong
|
| Organization | City University of Hong Kong |
| Domain | cityu.edu.hk |
| Number of IPv4 | 83,232 |
| Number of IPv6 | 1.2089× 1024 |
| AS Type | Education |
| Registry | APNIC |
| Allocated | July 31, 2002 (about 23 years ago) |
| Updated | October 10, 2022 (about 2 years ago) |
IP Ranges
AS4158 announces 10 IPv4 ranges and 1 IPv6 range.
That's a total of 83,232 IPv4 addresses and 1.2089× 1024 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 144.214.0.0/16 |
City University of Hong Kong
|
65,536 | APNIC | ALLOCATED PORTABLE |
| 144.214.178.0/24 |
City University of Hong Kong
|
256 | APNIC | ALLOCATED PORTABLE |
| 175.159.64.0/19 |
City University of Hong Kong
|
8,192 | APNIC | ASSIGNED NON-PORTABLE |
| 175.159.200.0/21 |
City University of Hong Kong
|
2,048 | APNIC | ASSIGNED NON-PORTABLE |
| 175.159.208.0/22 |
City University of Hong Kong
|
1,024 | APNIC | ASSIGNED NON-PORTABLE |
| 202.125.216.0/21 |
City University of Hong Kong
|
2,048 | APNIC | ASSIGNED NON-PORTABLE |
| 202.125.252.0/22 |
City University of Hong Kong
|
1,024 | APNIC | ASSIGNED NON-PORTABLE |
| 203.188.80.0/21 |
City University of Hong Kong
|
2,048 | APNIC | ASSIGNED NON-PORTABLE |
| 203.188.88.0/22 |
City University of Hong Kong
|
1,024 | APNIC | ASSIGNED NON-PORTABLE |
| 203.188.112.128/27 |
Harnet Backbone
|
32 | APNIC | ALLOCATED NON-PORTABLE |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2001:ce0:5::/48 |
Joint Universities Computer Centre Limited
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
Peers
AS4158 does not have any direct peering agreements. Instead, its global connectivity is achieved through transit providers. While this setup ensures comprehensive reach, future peering could reduce latency and optimize route efficiency.
Upstreams
AS4158 connects to the global Internet via at least 3 upstream providers. In this setup, AS4158 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.
Downstreams
AS4158 currently has no downstream networks, meaning it does not serve as a transit provider to customer networks.