Autonomous System

AS23881 UDomain Web Hosting Company Limited

HostingActiveHong Kong SAR ChinaAPNIC

AS23881 (UDOMAIN-AS-AP) is a hosting network operated by UDomain Web Hosting Company Limited in Hong Kong SAR China, registered with APNIC. It has 71 IPv4 prefixes with 18,176 addresses and 2 IPv6 prefixes, which makes it the 7,250th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses18,176in 71 prefixes
IPv6 prefixes2≈ 2.4 × 10²⁴ addresses
Size rank#7,250of 82,200 active ASNs
Abuser scoreLow0.1% of its addresses flagged · method

Details

OrganizationUDomain Web Hosting Company Limited
AS nameUDOMAIN-AS-AP
Websiteudomain.hk
Country Hong Kong SAR China (HK)
Network typeHosting
RegistryAPNIC
Abuse contactreport_abuse@udomain.hk
Registered—
Last updated2020-06-15

IPv4 prefixes

71 prefixes · 18,176 addresses
NetworkAddressesFirst – last address
23.226.0.0/2425623.226.0.0 – 23.226.0.255
23.226.1.0/2425623.226.1.0 – 23.226.1.255
23.226.2.0/2425623.226.2.0 – 23.226.2.255
23.226.3.0/2425623.226.3.0 – 23.226.3.255
23.226.4.0/2425623.226.4.0 – 23.226.4.255
23.226.6.0/2425623.226.6.0 – 23.226.6.255
23.226.7.0/2425623.226.7.0 – 23.226.7.255
23.226.8.0/2425623.226.8.0 – 23.226.8.255
23.226.11.0/2425623.226.11.0 – 23.226.11.255
45.121.192.0/2425645.121.192.0 – 45.121.192.255
45.121.193.0/2425645.121.193.0 – 45.121.193.255
45.121.194.0/2425645.121.194.0 – 45.121.194.255
45.121.196.0/2425645.121.196.0 – 45.121.196.255
45.121.197.0/2425645.121.197.0 – 45.121.197.255
45.121.198.0/2425645.121.198.0 – 45.121.198.255
45.121.199.0/2425645.121.199.0 – 45.121.199.255
45.121.200.0/2425645.121.200.0 – 45.121.200.255
45.121.201.0/2425645.121.201.0 – 45.121.201.255
45.121.203.0/2425645.121.203.0 – 45.121.203.255
103.15.180.0/24256103.15.180.0 – 103.15.180.255
103.15.181.0/24256103.15.181.0 – 103.15.181.255
103.15.183.0/24256103.15.183.0 – 103.15.183.255
103.15.192.0/24256103.15.192.0 – 103.15.192.255
103.15.194.0/24256103.15.194.0 – 103.15.194.255
103.15.195.0/24256103.15.195.0 – 103.15.195.255
The 25 largest of 71. The API and the database have all of them.

IPv6 prefixes

2 prefixes
  • 2400:c300::/48
  • 2400:c300:1::/48

Query AS23881 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS23881&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS23881, with or without a key:

curl "https://api.ipapi.is/?q=23.226.0.1"

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