2a0f:600:604::

Tokyo · Japan · Kazuki Yamaguchi

Registration lookup IPv6 address formats

Autonomous system: AS51044
Country: JP
Risk score: Not a probability

IP address summary

IP address: 2a0f:600:604::
ASN: AS51044
Network operator: Kazuki Yamaguchi
ISP: Kazuki Yamaguchi
Containing network profile: No indexed aggregate
Operator category: Enterprise

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

Public ASN reference

Reference ASN: AS51044
Source label: RHE Kazuki Yamaguchi
Reference interval: 2a0f:600:604:: to 2a0f:600:60d:ffff:ffff:ffff:ffff:ffff
Collected: 2026-11-02

IPtoASN maps this address interval to AS51044. 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: Japan
City: Tokyo
Region: Tokyo
Postal code: Not supplied
Timezone: Asia/Tokyo
Local time: 2026-11-05 03:47:14
Approximate coordinates: 35.727, 139.479

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

AS51044 profile

Organization: Kazuki Yamaguchi
ASN domain: as51044.net
Operator type: Enterprise

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

Network registration

Matching record range: 2a0f:600:604:: – 2a0f:600:60d:ffff:ffff:ffff:ffff:ffff
Registered network name: RHE-INFRA-1-600
Registered network block: 2a0f:600:600::/44
Registration source: RIPENCC WHOIS
Company: RHE-NET Infrastructure
Usage type: business
Company website: rhe.jp

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-C Role
Published contact network: 2a0f:600:600::/44
Abuse email: abuse@rhe.jp
Postal address: Kodaira-shi Jousuiminami-cho 2-17-20, 187-0021, Tokyo, JAPAN
Contact country: Japan

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

2a0f:600:604:: · live response

{
  "ip": "2a0f:600:604::",
  "isp": {
    "asn": "AS51044",
    "org": "Kazuki Yamaguchi",
    "isp": "Kazuki Yamaguchi"
  },
  "location": {
    "country": "Japan",
    "country_code": "JP",
    "city": "Tokyo",
    "state": "Tokyo",
    "zipcode": "",
    "latitude": 35.72665159981334,
    "longitude": 139.47916200912815,
    "timezone": "Asia/Tokyo",
    "localtime": "2026-11-05T03:47:14"
  },
  "risk": {
    "is_mobile": false,
    "is_vpn": false,
    "is_tor": false,
    "is_proxy": false,
    "is_datacenter": false,
    "risk_score": 0
  }
}