158.121.0.0

Boston · United States · UMASSNET

Autonomous system: AS1968
Country: US
Legacy classification score: Not a probability

IP address summary

IP address: 158.121.0.0
ASN: AS1968
Network operator: UMASSNET
ISP: UMASSNET
Containing network profile: 158.0.0.0/8
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: AS1968
Source label: UMASSNET-AS1968 - UMASSNET
Reference interval: 158.121.0.0 to 158.121.255.255
Collected: 2026-11-02

IPtoASN maps this address interval to AS1968. 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: Boston
Region: Massachusetts
Postal code: Not supplied
Timezone: America/New_York
Local time: 2026-11-08 22:24:57
Approximate coordinates: 42.312, -71.083

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

Legacy classification score: 0

This response predates the evidence-based model.

Read exact field definitions

ASN and network operator

AS1968 profile

Organization: UMASSNET
ASN domain: umass.edu
Operator type: Academic

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

Network registration

Matching record range: 158.121.0.0/16
Registered network name: UMASSBOSTON2
Registered network block: 158.121.0.0/16
Registration source: ARIN RDAP
Company: University of Massachusetts at Boston
Usage type: business
Company website: umb.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: UMB Network Operations Center
Published contact network: 158.121.0.0/16
Abuse email: it.security@umb.edu
Phone: +1-617-287-5236
Postal address: IT Communication and Infrastructure Services, 100 Morrissey Bvld., Boston, MA, 02125, 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

158.121.0.0 · live response

{
  "ip": "158.121.0.0",
  "isp": {
    "asn": "AS1968",
    "org": "UMASSNET",
    "isp": "UMASSNET"
  },
  "location": {
    "country": "United States",
    "country_code": "US",
    "city": "Boston",
    "state": "Massachusetts",
    "zipcode": "",
    "latitude": 42.311551599813335,
    "longitude": -71.08333799087185,
    "timezone": "America/New_York",
    "localtime": "2026-11-08T22:24:57"
  },
  "risk": {
    "is_mobile": false,
    "is_vpn": false,
    "is_tor": false,
    "is_proxy": false,
    "is_datacenter": false,
    "risk_score": 0
  }
}