128.103.0.0

Cambridge · United States · Harvard University

Autonomous system: AS1742
Country: US
Risk score

IP address summary

IP address: 128.103.0.0
ASN: AS1742
Network operator: Harvard University
ISP: Harvard University
Containing network profile: 128.0.0.0/8
Operator category: Academic

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

Public ASN reference

Reference ASN: AS1742
Source label: HARVARD-UNIV - Harvard University
Reference interval: 128.103.0.0 to 128.103.255.255
Collected: 2026-11-02

IPtoASN maps this address interval to AS1742. 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: United States
City: Cambridge
Region: Massachusetts
Postal code: Not supplied
Timezone: America/New_York
Local time: 2026-11-10 18:18:05
Approximate coordinates: 42.379, -71.113

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

AS1742 profile

Organization: Harvard University
ASN domain: harvard.edu
Operator type: Academic

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

Network registration

Matching record range: 128.103.0.0/16
Registered network name: HARVARD-UNIV
Registered network block: 128.103.0.0/16
Registration source: ARIN RDAP
Company: Harvard University
Usage type: business
Company website: harvard.edu

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
Published contact network: 128.103.0.0/16
Abuse email: abuse@harvard.edu
Phone: +1-617-495-3574
Postal address: 60 Oxford St, Cambridge, MA, 02138, United States
Contact country: United States

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

128.103.0.0 · live response

{
  "ip": "128.103.0.0",
  "isp": {
    "asn": "AS1742",
    "org": "Harvard University",
    "isp": "Harvard University"
  },
  "location": {
    "country": "United States",
    "country_code": "US",
    "city": "Cambridge",
    "state": "Massachusetts",
    "zipcode": "",
    "latitude": 42.378951599813334,
    "longitude": -71.11303799087186,
    "timezone": "America/New_York",
    "localtime": "2026-11-10T18:18:05"
  },
  "risk": {
    "is_mobile": false,
    "is_vpn": false,
    "is_tor": false,
    "is_proxy": false,
    "is_datacenter": false,
    "risk_score": 0
  }
}