AS24489 Trans-Eurasia Information Network (TEIN2) - North

China TEIN2-NORTH-AP APNIC 1 IPv4 prefix 0 IPv6 prefixes

IPv4 addresses

4,096

IPv6 /48 networks

RPKI

0 valid1 no ROA

Peers and downstreams

Holder

AS name: TEIN2-NORTH-AP
Description: Trans-Eurasia Information Network (TEIN2) - North China Education and Research Network Center Tsinghua University, Beijing 100084, China
Organisation: Trans-Eurasia Information Network (TEIN2) - North
Abuse contact: Not published
Assigned: 2005-11-23
Registered: 2008-09-04
Record last changed: 2020-09-03 09:16 UTC

202.179.240.0/20

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade E · 40/100

fail	Prefixes covered by valid ROAs 0 of 1 announced prefixes are RPKI valid, 1 have no ROA.	0/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
fail	Announces IPv6 No IPv6 prefixes are announced.	0/15
partly	More than one upstream 1 upstream seen in BGP.	5/10
pass	Working abuse contact abuse@cernet.edu.cn is published.	15/15
fail	Publishes a geofeed No geofeed found. Without one, location databases have to guess.	0/10
pass	No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger.	10/10
fail	Registry record maintained Last changed 2020-09-03.	0/5

Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.

Show this on your website

HTML

<a href="https://ip-fd.net/asn/24489"><img src="https://ip-fd.net/badge/asn/24489/health.svg" alt="AS24489 network health on IP-FD.net"></a>

Markdown

[![AS24489 network health](https://ip-fd.net/badge/asn/24489/health.svg)](https://ip-fd.net/asn/24489)

Use rpki.svg instead of health.svg for the RPKI badge.

Routing changes

Last 30 days

2026-10-04 03:54 UTC

Relationship changed

AS24287

upstream to peer

WHOIS

aut-num:        AS24489
as-name:        TEIN2-NORTH-AP
handle:         AS24489
remarks:        Trans-Eurasia Information Network (TEIN2) - North
remarks:        China Education and Research Network Center
remarks:        Tsinghua University, Beijing 100084, China
technical,administrative:CER-AP (CERNET Helpdesk) <helpdesk@cernet.edu.cn>
abuse:          IRT-CERNET-AP (IRT-CERNET-AP) <abuse@cernet.edu.cn>
registration:   2008-09-04T06:40:38Z
last changed:   2020-09-03T09:16:23Z
source:         APNIC (RDAP)

Routing data

Updated 2 days ago

Registry record

Fetched 2 days ago from APNIC RDAP

Prefixes and neighbours come from the RIPE RIS route collectors. Data older than 5 minutes is refreshed when this page is opened.

API

curl -H "X-API-Key: YOUR_KEY" https://ip-fd.net/api/v1/asn/24489

const res = await fetch('https://ip-fd.net/api/v1/asn/24489', {
  headers: { 'X-API-Key': 'YOUR_KEY' }
});
const data = await res.json();
console.log(data);

import requests

r = requests.get('https://ip-fd.net/api/v1/asn/24489', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/24489');
curl_setopt($ch, CURLOPT_HTTPHEADER, ['X-API-Key: YOUR_KEY']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = json_decode(curl_exec($ch), true);
print_r($data);

req, _ := http.NewRequest("GET", "https://ip-fd.net/api/v1/asn/24489", nil)
req.Header.Set("X-API-Key", "YOUR_KEY")
res, err := http.DefaultClient.Do(req)
if err != nil {
    log.Fatal(err)
}
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Works without a key at a lower rate. Get a free key.

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