AS20252 Joan and Sanford I. Weill Medical College and Graduate School of Medical Sciences of Cornell University

United States JSIWMC ARIN 4 IPv4 prefixes 0 IPv6 prefixes

IPv4 addresses

98,816

IPv6 /48 networks

RPKI

0 valid4 no ROA

Peers and downstreams

Holder

AS name: JSIWMC
Description: Joan and Sanford I. Weill Medical College and Graduate School of Medical Sciences of Cornell University
Organisation: Joan and Sanford I. Weill Medical College and Graduate School of Medical Sciences of Cornell University
Abuse contact: Not published
Assigned: 2001-04-11
Registered: 2001-04-12
Record last changed: 2012-02-24 14:44 UTC

140.251.0.0/17 157.139.0.0/16 207.162.253.0/24 38.146.193.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade D · 45/100

fail	Prefixes covered by valid ROAs 0 of 4 announced prefixes are RPKI valid, 4 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
pass	More than one upstream 3 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@med.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
fail	Registry record maintained Last changed 2012-02-24.	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/20252"><img src="https://ip-fd.net/badge/asn/20252/health.svg" alt="AS20252 network health on IP-FD.net"></a>

Markdown

[![AS20252 network health](https://ip-fd.net/badge/asn/20252/health.svg)](https://ip-fd.net/asn/20252)

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:        AS20252
as-name:        JSIWMC
handle:         AS20252
registrant:     JOANAN (Joan and Sanford I. Weill Medical College and Graduate School of Medical Sciences of Cornell University)
technical,noc:  NOC216-ARIN (Network Operations Center) <noc@med.cornell.edu>
abuse:          ISAR-ARIN (Information Security Abuse Response) <abuse@med.cornell.edu>
administrative: VIV3-ARIN (Vinay I. Varughese) <vinay@med.cornell.edu>
technical:      VIV3-ARIN (Vinay I. Varughese) <vinay@med.cornell.edu>
last changed:   2012-02-24T09:44:34-05:00
registration:   2001-04-12T00:00:00-04:00
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/20252

const res = await fetch('https://ip-fd.net/api/v1/asn/20252', {
  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/20252', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/20252');
curl_setopt($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/20252", 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.

AS174
AS12271	Charter Communications Inc TWC-12271-NYC
AS46887	Crown Castle Fiber LLC CROWNCASTLE-AS46887

AS3630	NYSERNet NYSERNET-BLK
AS3754	NYSERNet NYSERNET3-AS