37.158.0.0

Madrid · Spain · TELEFONICA DE ESPANA S.A.U.

Autonomous system: AS3352
Country: ES
Weighted risk score: 0; Not a probability

IP address summary

IP address: 37.158.0.0
ASN: AS3352
Network operator: TELEFONICA DE ESPANA S.A.U.
ISP: TELEFONICA DE ESPANA S.A.U.
Containing network profile: 37.0.0.0/8
Operator category: Home ISP

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

Public ASN reference

Reference ASN: AS3352
Source label: Telefonica_de_EspaNa TELEFONICA DE ESPANA S.A.U.
Reference interval: 37.158.0.0 to 37.158.255.255
Collected: 2026-11-02

IPtoASN maps this address interval to AS3352. 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: Spain
City: Madrid
Region: Madrid
Postal code: Not supplied
Timezone: Europe/Madrid
Local time: 2026-11-02 13:25:38
Approximate coordinates: 40.512, -3.673

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

The score adds 50 for proxy, 50 for Tor, 30 for VPN and 20 for hosting. “Not listed” does not establish safety. Hosting combines Enterprise data and legacy overrides; Tor combines the Enterprise field and legacy list.

Read exact field definitions

ASN and network operator

AS3352 profile

Organization: TELEFONICA DE ESPANA S.A.U.
ASN domain: telefonica.es
Operator type: Home ISP

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

Network registration

Matching record range: 37.158.0.0/16
Registered network name: TE-TRAC
Registration source: RIPENCC WHOIS
Company: Red de Servicios IP
Usage type: residential
Company website: telefonica.es

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

Abuse contact

Contact name: NEMESYS ABUSE TEAM
Matching record range: 37.158.0.0/16
Abuse email: nemesys@telefonica.es
Phone: +34676739599
Postal address: C/ Ronda de la Comunicaci?n s/n
Contact country: Spain

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

37.158.0.0 · live response

{
  "ip": "37.158.0.0",
  "isp": {
    "asn": "AS3352",
    "org": "TELEFONICA DE ESPANA S.A.U.",
    "isp": "TELEFONICA DE ESPANA S.A.U."
  },
  "location": {
    "country": "Spain",
    "country_code": "ES",
    "city": "Madrid",
    "state": "Madrid",
    "zipcode": "",
    "latitude": 40.51175159981334,
    "longitude": -3.6725379908718607,
    "timezone": "Europe/Madrid",
    "localtime": "2026-11-02T13:25:38"
  },
  "risk": {
    "is_mobile": false,
    "is_vpn": false,
    "is_tor": false,
    "is_proxy": false,
    "is_datacenter": false,
    "risk_score": 0
  }
}