203.66.245.0

Taipei · Taiwan · Taiwan Semiconductor Manufactoring Company, Ltd.

Autonomous system: AS23675
Country: TW
Risk score

IP address summary

IP address: 203.66.245.0
ASN: AS23675
Network operator: Taiwan Semiconductor Manufactoring Company, Ltd.
ISP: Taiwan Semiconductor Manufactoring Company, Ltd.
Containing network profile: 203.66.0.0/16
Operator category: Enterprise

The containing profile is the nearest published aggregate. It is not a registry allocation or BGP ownership record.

Public ASN reference

Reference ASN: AS23675
Source label: TSMCGDN-AS-AP - Taiwan Semiconductor Manufactoring Company, Ltd.
Reference interval: 203.66.245.0 to 203.66.245.255
Collected: 2026-11-02

IPtoASN maps this address interval to AS23675. An interval is not necessarily a BGP prefix or registered allocation. It does not establish geolocation or ownership.

IPtoASN source Reference methodology

IP geolocation

World map with country boundaries — Approximate network location; not a device positionNatural Earth map data

Country: Taiwan
City: Taipei
Region: Taipei
Postal code: Not supplied
Timezone: Asia/Taipei
Local time: 2026-11-10 09:31:19
Approximate coordinates: 25.067, 121.518

Network-level coordinates do not identify a precise user or device location. How geolocation works

VPN, proxy and network signals

VPNNot listed

ProxyNot listed

TorNot classified

HostingNot classified

MobileNot classified

Risk score: 0 / 100

A low score is not proof that an address is safe.

Read exact field definitions

ASN and network operator

AS23675 profile

Organization: Taiwan Semiconductor Manufactoring Company, Ltd.
ASN domain: tsmc.com
Operator type: Enterprise

The ASN organization can differ from the organization using an individual address.

Network registration

Matching record range: 203.66.245.0/24
Registered network name: TAIWAN-SEMICONDU-HC-TW
Registered network block: 203.66.245.0/24
Registration source: TWNIC RDAP
Company: Taiwan Semiconductor Manufacturing Company Limited
Usage type: business
Company website: tsmc.com

Registration and company fields describe this source record. They can differ from the ASN operator and from live routing announcements.

Abuse contact

Contact name: Zeng Mo Yi
Published contact network: 203.66.245.0/24
Abuse email: lolo_tzeng@tsmc.com
Phone: +886-3-563-6688
Postal address: Taiwan Semiconductor Manufacturing Company Limited, No. 188, Yuanqu 2nd Rd., Baoshan Township, Hsinchu County County Taiwan
Contact country: Taiwan

This contact is attached to the network record. Include the source IP, UTC timestamps and relevant logs when reporting abuse.

Actual API response

Open JSON

203.66.245.0 · live response

{
  "ip": "203.66.245.0",
  "isp": {
    "asn": "AS23675",
    "org": "Taiwan Semiconductor Manufactoring Company, Ltd.",
    "isp": "Taiwan Semiconductor Manufactoring Company, Ltd."
  },
  "location": {
    "country": "Taiwan",
    "country_code": "TW",
    "city": "Taipei",
    "state": "Taipei",
    "zipcode": "",
    "latitude": 25.067311599813337,
    "longitude": 121.51755200912815,
    "timezone": "Asia/Taipei",
    "localtime": "2026-11-10T09:31:19"
  },
  "risk": {
    "is_mobile": false,
    "is_vpn": false,
    "is_tor": false,
    "is_proxy": false,
    "is_datacenter": false,
    "risk_score": 0
  }
}