AS26

6 IPv4 prefixes 1 IPv6 prefix

IPv4 addresses

197,376

IPv6 /48 networks

RPKI

1 valid6 no ROA

Peers and downstreams

Holder

AS name
Organisation: Not published
Abuse contact: Not published
Registered: 1984-08-10
Record last changed: 2025-03-27 14:45 UTC

128.253.0.0/16 128.84.0.0/16 132.236.0.0/16 192.122.235.0/24 192.122.236.0/24 192.35.82.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade C · 69/100

partly	Prefixes covered by valid ROAs 1 of 7 announced prefixes are RPKI valid, 6 have no ROA.	4/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 1 IPv6 prefix.	15/15
pass	More than one upstream 3 upstreams seen in BGP.	10/10
pass	Working abuse contact noc@cornell.edu 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
pass	Registry record maintained Last changed 2025-03-27.	5/5

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/26"><img src="https://ip-fd.net/badge/asn/26/health.svg" alt="AS26 network health on IP-FD.net"></a>

Markdown

[![AS26 network health](https://ip-fd.net/badge/asn/26/health.svg)](https://ip-fd.net/asn/26)

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

Routing changes

Last 30 days

No changes recorded in the last 30 days. Changes are recorded each time the routing data of this AS is refreshed. Get alerts in real time.

WHOIS

aut-num:        AS26
as-name:        CORNELL
handle:         AS26
registrant:     CORNEL (Cornell University)
technical:      BRADL365-ARIN (Scott Bradley) <srb3@cornell.edu>
technical,administrative:MULDO2-ARIN (Trent Muldoon) <tnm-arin@cornell.edu>
abuse:          NOC33962-ARIN (NOC) <noc@cornell.edu>
technical:      BRADL365-ARIN (Scott Bradley) <srb3@cornell.edu>
technical:      MULDO2-ARIN (Trent Muldoon) <tnm-arin@cornell.edu>
noc:            NOC33962-ARIN (NOC) <noc@cornell.edu>
last changed:   2025-03-27T10:45:28-04:00
registration:   1984-08-10T00:00:00-04:00
source:         ARIN (RDAP)

Routing data

Updated just now

Registry record

Fetched just now from ARIN 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/26

const res = await fetch('https://ip-fd.net/api/v1/asn/26', {
  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/26', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/26');
curl_setopt($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/26", 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))

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