203.3.100.0

Sydney · Australia · Telstra Limited

Autonomous system: AS1221
Country: AU
Legacy classification score: 0; Not a probability

IP address summary

IP address: 203.3.100.0
ASN: AS1221
Network operator: Telstra Limited
ISP: Telstra Limited
Containing network profile: 203.3.0.0/16
Operator category: Business Broadband

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

Public ASN reference

Reference ASN: AS1221
Source label: ASN-TELSTRA - Telstra Limited
Reference interval: 203.3.100.0 to 203.3.102.255
Collected: 2026-11-02

IPtoASN maps this address interval to AS1221. 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: Australia
City: Sydney
Region: New South Wales
Postal code: Not supplied
Timezone: Australia/Sydney
Local time: 2026-11-03 11:52:17
Approximate coordinates: -33.845, 151.195

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

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

Read exact field definitions

ASN and network operator

AS1221 profile

Organization: Telstra Limited
ASN domain: telstra.com.au
Operator type: Business Broadband

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

Network registration

Matching record range: 203.3.100.0 – 203.3.102.255
Registered network name: GAHPL-AU
Registered network block: 203.3.100.0/22
Registration source: APNIC WHOIS
Company: Glencore Australia Holdings Pty Ltd
Usage type: business
Company website: glencore.com.au

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

Abuse contact

Contact name: ABUSE GAHPLAU
Published contact network: 203.3.100.0/22
Abuse email: regionalit@glencore.com.au
Phone: +61-2-8247-6300
Postal address: Level 44, Gateway/1 Macquarie Place, Sydney New South Wales 2000
Contact country: Australia

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

203.3.100.0 · live response

{
  "ip": "203.3.100.0",
  "isp": {
    "asn": "AS1221",
    "org": "Telstra Limited",
    "isp": "Telstra Limited"
  },
  "location": {
    "country": "Australia",
    "country_code": "AU",
    "city": "Sydney",
    "state": "New South Wales",
    "zipcode": "",
    "latitude": -33.845348400186666,
    "longitude": 151.19526200912816,
    "timezone": "Australia/Sydney",
    "localtime": "2026-11-03T11:52:17"
  },
  "risk": {
    "is_mobile": false,
    "is_vpn": false,
    "is_tor": false,
    "is_proxy": false,
    "is_datacenter": false,
    "risk_score": 0
  }
}