AS45187 Rackspace IT Hosting AS IT Hosting Provider Hong Kong

RACKSPACE-AP - Rackspace IT Hosting AS IT Hosting Provider Hong Kong · registered in Hong Kong

IPv4 addresses66,81611 prefixes · 0.002% of announced IPv4

Rank in Hong Kong#47largest network in HK by IPv4 space, of 735 · 0.34% of HK

Rank worldwide#2,602of 79,396 networks with IPv4

IPv62 x /32 (131,072 x /48)2 prefixes

CountryHong Kong779 ASNs registered there

Open AS45187 in ASN lookup Look up an IP in this network (66.70.1.1) All networks in Hong Kong

IPv4 prefixes

All 11 prefixes, in address order.

66.70.1.0/24
66.70.92.0/22
66.70.107.0/24
103.4.112.0/23
119.9.64.0/18
120.136.32.0/20
122.200.132.0/22
134.8.1.0/24
180.150.128.0/19
202.168.208.0/21
203.60.0.0/17

IPv6 prefixes

All 2 prefixes.

2401:1800::/32
2407:fa00::/32

Similar-sized networks in Hong Kong

ASNNameIPv4 addresses

AS4605#44 ERX-HKBUNET - Hong Kong Baptist University74,240

AS3661#45 ERX-CUHKNET - The Chinese University of Hong Kong73,984

AS133199#46 SONDERCLOUDLIMITED-AS-AP - SonderCloud Limited73,728

AS9584#48 GENESIS-AP - Diyixian.com Limited66,048

AS38186#49 FTG-AS-AP - Forewin Telecom Group Limited, ISP at HK65,792

AS17759#50 CLPPOWER-AS-AP - CLP Power Hong Kong Limited65,536

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