203.255.64.0

Cheongju-si · South Korea · CHUNGBUK NATIONAL UNIVERSITY

Autonomous system: AS18158
Country: KR
Legacy classification score: Not a probability

IP address summary

IP address: 203.255.64.0
ASN: AS18158
Network operator: CHUNGBUK NATIONAL UNIVERSITY
ISP: CHUNGBUK NATIONAL UNIVERSITY
Containing network profile: 203.255.0.0/16
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: AS18158
Source label: CBNU-AS-KR-KR - CHUNGBUK NATIONAL UNIVERSITY
Reference interval: 203.255.64.0 to 203.255.95.255
Collected: 2026-11-02

IPtoASN maps this address interval to AS18158. 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: South Korea
City: Cheongju-si
Region: North Chungcheong
Postal code: Not supplied
Timezone: Asia/Seoul
Local time: 2026-11-09 14:10:20
Approximate coordinates: 36.651, 127.481

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

AS18158 profile

Organization: CHUNGBUK NATIONAL UNIVERSITY
ASN domain: chungbuk.ac.kr
Operator type: Academic

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

Network registration

Matching record range: 203.255.64.0/19
Registered network name: CHUNGBUK-NET
Registered network block: 203.255.64.0/19
Registration source: APNIC WHOIS
Company: CHUNGBUK NATIONAL UNIVERSITY
Usage type: business
Company website: chungbuk.ac.kr

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

Abuse contact

Contact name: IP Manager
Published contact network: 203.255.64.0/19
Abuse email: mailadm@chungbuk.ac.kr
Phone: +82-43-261-2117
Postal address: Chungcheongbuk-do Seowon-gu, Cheongju-si Chungdae-ro 1, Chungbuk National University
Contact country: South Korea

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

203.255.64.0 · live response

{
  "ip": "203.255.64.0",
  "isp": {
    "asn": "AS18158",
    "org": "CHUNGBUK NATIONAL UNIVERSITY",
    "isp": "CHUNGBUK NATIONAL UNIVERSITY"
  },
  "location": {
    "country": "South Korea",
    "country_code": "KR",
    "city": "Cheongju-si",
    "state": "North Chungcheong",
    "zipcode": "",
    "latitude": 36.651471599813334,
    "longitude": 127.48088200912815,
    "timezone": "Asia/Seoul",
    "localtime": "2026-11-09T14:10:20"
  },
  "risk": {
    "is_mobile": false,
    "is_vpn": false,
    "is_tor": false,
    "is_proxy": false,
    "is_datacenter": false,
    "risk_score": 0
  }
}