HTTPfy

AS131584 Taiwan Intelligent Fiber Optic Network Co.,Ltd.

TAIFO-AS-TW - Taiwan Intelligent Fiber Optic Network Co.,Ltd. · registered in Taiwan

IPv4 addresses41,47221 prefixes · 0.001% of announced IPv4
Rank in Taiwan#43largest network in TW by IPv4 space, of 237 · 0.12% of TW
Rank worldwide#4,242of 79,396 networks with IPv4
IPv61 x /32 (65,536 x /48)31 prefixes
CountryTaiwan288 ASNs registered there
Open AS131584 in ASN lookup Look up an IP in this network (43.255.12.1) All networks in Taiwan

IPv4 prefixes

All 21 prefixes, in address order.

  • 43.255.12.0/22
  • 101.3.0.0/22
  • 101.3.4.0/23
  • 101.3.6.0/24
  • 101.3.9.0/24
  • 101.3.10.0/23
  • 101.3.12.0/24
  • 101.3.14.0/23
  • 101.3.16.0/24
  • 101.3.32.0/19
  • 101.3.96.0/21
  • 101.3.104.0/23
  • 101.3.251.0/24
  • 101.3.252.0/22
  • 103.31.196.0/22
  • 103.226.212.0/22
  • 106.105.176.0/21
  • 111.125.128.0/21
  • 111.235.192.0/18
  • 210.203.52.0/24
  • 210.203.56.0/21

IPv6 prefixes

All 31 prefixes.

  • 2400:4e80::/36
  • 2400:4e80:1000::/48
  • 2400:4e80:1001::/48
  • 2400:4e80:1002::/47
  • 2400:4e80:1004::/46
  • 2400:4e80:1008::/45
  • 2400:4e80:1010::/44
  • 2400:4e80:1020::/43
  • 2400:4e80:1040::/42
  • 2400:4e80:1080::/41
  • 2400:4e80:1100::/40
  • 2400:4e80:1200::/39
  • 2400:4e80:1400::/38
  • 2400:4e80:1800::/37
  • 2400:4e80:2000::/35
  • 2400:4e80:4000::/35
  • 2400:4e80:6000::/36
  • 2400:4e80:7000::/37
  • 2400:4e80:7800::/40
  • 2400:4e80:7900::/41
  • 2400:4e80:7980::/42
  • 2400:4e80:79c0::/43
  • 2400:4e80:79e0::/44
  • 2400:4e80:79f0::/45
  • 2400:4e80:79f8::/46
  • 2400:4e80:79fc::/48
  • 2400:4e80:79fd::/48
  • 2400:4e80:79fe::/47
  • 2400:4e80:7a00::/39
  • 2400:4e80:7c00::/38
  • 2400:4e80:8000::/33

Similar-sized networks in Taiwan

ASNNameIPv4 addresses
AS17408#40 ABOVE-AS-AP - AboveNet Communications Taiwan51,712
AS9922#41 NKB-AS-TW - New Kaohsiung Broadband LTD.51,712
AS18429#42 EXTRALAN-TW - Extra-Lan Technologies Co., LTD43,008
AS131628#44 taifucloud-as-tw - Tai-Fu Cloud Co., Ltd.41,472
AS4783#45 SYSNET-AS1 - SYSTEX CORPORATION40,960
AS131607#46 DCTV-AS-TW - Digidom CableTV Co., LTD.38,144

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