AS17975 AS # for peering purpose with IX and ISP.

APT-AP - AS # for peering purpose with IX and ISP. · registered in Hong Kong

IPv4 addresses4,0968 prefixes · <0.001% of announced IPv4

Rank in Hong Kong#219largest network in HK by IPv4 space, of 735 · 0.02% of HK

Rank worldwide#15,726of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryHong Kong779 ASNs registered there

Open AS17975 in ASN lookup Look up an IP in this network (203.169.32.1) All networks in Hong Kong

IPv4 prefixes

All 8 prefixes, in address order.

203.169.32.0/22
203.169.46.0/23
221.120.176.0/23
221.120.179.0/24
221.120.180.0/24
221.120.183.0/24
221.120.184.0/22
221.120.189.0/24

Similar-sized networks in Hong Kong

ASNNameIPv4 addresses

AS7484#216 HKACTL-AS-AP - Hong Kong Air Cargo Terminals Ltd.4,096

AS10238#217 CCI-HK-AP - Cyber Channel International Ltd4,096

AS17619#218 POWERNETIX-AS - POWERNETIX4,096

AS17988#220 CSC-HK-AS-AP - China Satellite Communications (HongKong) Corporation Limited4,096

AS133038#221 EXANET-AS - Exanet Limited4,096

AS133948#222 DIL-AS-AP - DONGFONG INC LIMITED4,096

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources