5.57.16.0

London · United Kingdom · Booking.com BV

Hosting

Registration lookup

Autonomous system: AS43996
Country: GB
Legacy classification score: Not a probability

IP address summary

IP address: 5.57.16.0
ASN: AS43996
Network operator: Booking.com BV
ISP: Booking.com BV
Containing network profile: 5.57.0.0/16
Operator category: CDN

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

Public ASN reference

Reference ASN: AS43996
Source label: Booking-BV Booking.com BV
Reference interval: 5.57.16.0 to 5.57.19.255
Collected: 2026-11-02

IPtoASN maps this address interval to AS43996. 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 Kingdom
City: London
Region: England
Postal code: Not supplied
Timezone: Europe/London
Local time: 2026-11-09 06:37:58
Approximate coordinates: 51.523, -0.135

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

HostingClassified

MobileNot classified

Legacy classification score: 0

This response predates the evidence-based model.

Read exact field definitions

ASN and network operator

AS43996 profile

Organization: Booking.com BV
ASN domain: booking.com
Operator type: CDN

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

Network registration

Matching record range: 5.57.16.0/24
Registered network name: NET-BOOKING-001
Registered network block: 5.57.16.0/24
Registration source: RIPENCC WHOIS
Company: Booking.com GB
Usage type: hosting
Company website: booking.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: Booking.com Internet
Published contact network: 5.57.16.0/24
Abuse email: internet@booking.com
Postal address: Herengracht 597, 1017 CE Amsterdam, Netherlands
Contact country: The Netherlands

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

5.57.16.0 · live response

{
  "ip": "5.57.16.0",
  "isp": {
    "asn": "AS43996",
    "org": "Booking.com BV",
    "isp": "Booking.com BV"
  },
  "location": {
    "country": "United Kingdom",
    "country_code": "GB",
    "city": "London",
    "state": "England",
    "zipcode": "",
    "latitude": 51.522781599813335,
    "longitude": -0.13457799087186073,
    "timezone": "Europe/London",
    "localtime": "2026-11-09T06:37:58"
  },
  "risk": {
    "is_mobile": false,
    "is_vpn": false,
    "is_tor": false,
    "is_proxy": false,
    "is_datacenter": true,
    "risk_score": 0
  }
}