Autonomous System

AS17421 Mobile Business Group

ISPActiveTaiwanAPNIC

AS17421 (EMOME-NET) is an ISP network operated by Mobile Business Group in Taiwan, registered with APNIC. It has 191 IPv4 prefixes with 1,689,600 addresses and 34 IPv6 prefixes, which makes it the 295th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses1,689,600in 191 prefixes
IPv6 prefixes34≈ 4.1 × 10³¹ addresses
Size rank#295of 82,200 active ASNs
Abuser scoreLow0.09% of its addresses flagged · method

Details

OrganizationMobile Business Group
AS nameEMOME-NET
Websitechinamobile.com
Country Taiwan (TW)
Network typeISP
RegistryAPNIC
Abuse contactabuse@hinet.net
Registered—
Last updated2025-11-06

IPv4 prefixes

191 prefixes · 1,689,600 addresses
NetworkAddressesFirst – last address
42.74.0.0/1665,53642.74.0.0 – 42.74.255.255
42.75.0.0/1665,53642.75.0.0 – 42.75.255.255
111.80.0.0/1665,536111.80.0.0 – 111.80.255.255
42.73.0.0/1732,76842.73.0.0 – 42.73.127.255
42.73.128.0/1732,76842.73.128.0 – 42.73.255.255
42.79.0.0/1732,76842.79.0.0 – 42.79.127.255
111.82.0.0/1732,768111.82.0.0 – 111.82.127.255
111.82.128.0/1732,768111.82.128.0 – 111.82.255.255
223.143.0.0/1732,768223.143.0.0 – 223.143.127.255
42.70.0.0/1816,38442.70.0.0 – 42.70.63.255
42.70.64.0/1816,38442.70.64.0 – 42.70.127.255
42.70.128.0/1816,38442.70.128.0 – 42.70.191.255
42.70.192.0/1816,38442.70.192.0 – 42.70.255.255
42.71.0.0/1816,38442.71.0.0 – 42.71.63.255
42.71.64.0/1816,38442.71.64.0 – 42.71.127.255
42.71.128.0/1816,38442.71.128.0 – 42.71.191.255
42.71.192.0/1816,38442.71.192.0 – 42.71.255.255
42.72.0.0/1816,38442.72.0.0 – 42.72.63.255
42.72.64.0/1816,38442.72.64.0 – 42.72.127.255
42.72.128.0/1816,38442.72.128.0 – 42.72.191.255
42.72.192.0/1816,38442.72.192.0 – 42.72.255.255
42.76.0.0/1816,38442.76.0.0 – 42.76.63.255
42.76.64.0/1816,38442.76.64.0 – 42.76.127.255
42.76.128.0/1816,38442.76.128.0 – 42.76.191.255
42.76.192.0/1816,38442.76.192.0 – 42.76.255.255
The 25 largest of 191. The API and the database have all of them.

IPv6 prefixes

34 prefixes
  • 2001:b400::/23
  • 2001:b400:e000::/36
  • 2001:b400:e100::/44
  • 2001:b400:e110::/44
  • 2001:b400:e120::/44
  • 2001:b400:e130::/44
  • 2001:b400:e140::/44
  • 2001:b400:e150::/44
  • 2001:b400:e160::/44
  • 2001:b400:e170::/44
  • 2001:b400:e3e0::/44
  • 2001:b400:e3f0::/44
  • 2001:b400:e500::/44
  • 2001:b400:e510::/44
  • 2001:b400:e520::/44
  • 2001:b400:e530::/44
  • 2001:b400:e540::/44
  • 2001:b400:e550::/44
  • 2001:b400:e560::/44
  • 2001:b400:e570::/44
  • 2001:b400:e600::/44
  • 2001:b400:e610::/44
  • 2001:b400:e620::/44
  • 2001:b400:e630::/44
  • 2001:b400:e640::/44
The 25 largest of 34. The API and the database have all of them.

Query AS17421 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=AS17421&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS17421, with or without a key:

curl "https://api.ipapi.is/?q=42.74.0.1"

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