Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS4158

Announcement observedARIN

City University of Hong Kong · CITYUNI-AS-AP

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/19/2026, 18:50:25Snapshot expired

View network topology RDAP registration

ASN: AS4158
Registration country: Hong Kong SAR China
Name: City University of Hong Kong
Abbreviation: CITYUNI-AS-AP
Registration date: 9/4/2008, 06:40:34
Status: Announcement observed
RIR: ARIN

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
144.214.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	10/19/2026, 08:00:00	✓	×	Historical record
144.214.128.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	10/15/2026, 00:00:00	10/15/2026, 00:00:00	✓	×	Historical record
144.214.56.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/27/2026, 08:00:00	9/27/2026, 08:00:00	✓	×	Historical record
144.214.89.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/25/2026, 08:00:00	9/25/2026, 08:00:00	✓	×	Historical record
175.159.200.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	10/19/2026, 08:00:00	✓	×	Historical record
175.159.208.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	10/19/2026, 08:00:00	✓	×	Historical record
175.159.64.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	10/19/2026, 08:00:00	✓	×	Historical record
175.159.72.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 00:00:00	9/28/2026, 00:00:00	✓	×	Historical record
175.159.77.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 00:00:00	9/28/2026, 00:00:00	✓	×	Historical record
175.159.81.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 00:00:00	9/28/2026, 00:00:00	✓	×	Historical record
175.159.83.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 00:00:00	9/28/2026, 00:00:00	✓	×	Historical record
175.159.85.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 00:00:00	9/28/2026, 00:00:00	✓	×	Historical record
175.159.87.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 00:00:00	9/28/2026, 00:00:00	✓	×	Historical record
175.159.90.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 00:00:00	9/28/2026, 00:00:00	✓	×	Historical record
175.159.92.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 00:00:00	9/28/2026, 00:00:00	✓	×	Historical record
175.159.93.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 00:00:00	9/28/2026, 00:00:00	✓	×	Historical record
175.159.94.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 00:00:00	9/28/2026, 00:00:00	✓	×	Historical record
202.125.216.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	10/19/2026, 08:00:00	✓	×	Historical record
202.125.252.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	10/19/2026, 08:00:00	✓	×	Historical record
203.188.80.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	10/19/2026, 08:00:00	✓	×	Historical record
203.188.88.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	10/19/2026, 08:00:00	✓	×	Historical record

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: City University of Hong Kong
RIR: ARIN
Registration country: Hong Kong SAR China
Registration date: 9/4/2008, 06:40:34
Abuse contact: ccnet@cityu.edu.hk

Snapshot trend

10/19/2026, 18:50:259 v41 v62 Upstream · 0 Uncertain

9/29/2026, 11:20:1420 v41 v62 Upstream · 0 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · iana-rdap-asn-bootstrap · rir-rdap-asn