Autonomous System

AS131584 Taiwan Intelligent Fiber Optic Network Co.,Ltd.

ISPActiveTaiwanAPNIC

AS131584 (TAIFO-AS-TW) is an ISP network operated by Taiwan Intelligent Fiber Optic Network Co.,Ltd. in Taiwan, registered with APNIC. It has 49 IPv4 prefixes with 41,472 addresses and 24 IPv6 prefixes, which makes it the 4,690th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses41,472in 49 prefixes
IPv6 prefixes24≈ 7.9 × 10²⁸ addresses
Size rank#4,690of 82,200 active ASNs
Abuser scoreLow0.08% of its addresses flagged · method

Details

OrganizationTaiwan Intelligent Fiber Optic Network Co.,Ltd.
AS nameTAIFO-AS-TW
Websitetaifo.com.tw
Country Taiwan (TW)
Network typeISP
RegistryAPNIC
Abuse contactoreo.chao@taifo.com.tw
Registered—
Last updated2025-11-06

IPv4 prefixes

49 prefixes · 41,472 addresses
NetworkAddressesFirst – last address
101.3.32.0/204,096101.3.32.0 – 101.3.47.255
101.3.48.0/204,096101.3.48.0 – 101.3.63.255
111.235.192.0/204,096111.235.192.0 – 111.235.207.255
101.3.96.0/212,048101.3.96.0 – 101.3.103.255
111.125.128.0/212,048111.125.128.0 – 111.125.135.255
111.235.208.0/212,048111.235.208.0 – 111.235.215.255
111.235.216.0/212,048111.235.216.0 – 111.235.223.255
111.235.224.0/212,048111.235.224.0 – 111.235.231.255
111.235.232.0/212,048111.235.232.0 – 111.235.239.255
111.235.248.0/212,048111.235.248.0 – 111.235.255.255
43.255.12.0/221,02443.255.12.0 – 43.255.15.255
103.31.196.0/221,024103.31.196.0 – 103.31.199.255
111.235.244.0/221,024111.235.244.0 – 111.235.247.255
210.203.56.0/221,024210.203.56.0 – 210.203.59.255
210.203.60.0/221,024210.203.60.0 – 210.203.63.255
101.3.2.0/23512101.3.2.0 – 101.3.3.255
101.3.4.0/23512101.3.4.0 – 101.3.5.255
103.226.212.0/23512103.226.212.0 – 103.226.213.255
106.105.176.0/23512106.105.176.0 – 106.105.177.255
101.3.0.0/24256101.3.0.0 – 101.3.0.255
101.3.1.0/24256101.3.1.0 – 101.3.1.255
101.3.6.0/24256101.3.6.0 – 101.3.6.255
101.3.9.0/24256101.3.9.0 – 101.3.9.255
101.3.10.0/24256101.3.10.0 – 101.3.10.255
101.3.11.0/24256101.3.11.0 – 101.3.11.255
The 25 largest of 49. The API and the database have all of them.

IPv6 prefixes

24 prefixes
  • 2400:4e80::/32
  • 2400:4e80:1000::/48
  • 2400:4e80:79fa::/48
  • 2400:4e80:79fb::/48
  • 2400:4e80:79fc::/48
  • 2400:4e80:79ff::/48
  • 2400:4e80:a104::/48
  • 2400:4e80:a105::/48
  • 2400:4e80:79fd::/56
  • 2400:4e80:79fd:100::/56
  • 2400:4e80:fffe:fd00::/56
  • 2400:4e80::/64
  • 2400:4e80:0:1::/64
  • 2400:4e80:1::/64
  • 2400:4e80:79fd:200::/64
  • 2400:4e80:79fd:400::/64
  • 2400:4e80:79fd:500::/64
  • 2400:4e80:79fd:700::/64
  • 2400:4e80:79fd:800::/64
  • 2400:4e80:79fd:1100::/64
  • 2400:4e80:79fd:1200::/64
  • 2400:4e80:79fd:1300::/64
  • 2400:4e80:79fd:1400::/64
  • 2400:4e80:79fe::/64

Query AS131584 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=AS131584&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS131584, with or without a key:

curl "https://api.ipapi.is/?q=101.3.32.1"

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