AS22644 Thomas Jefferson University Hospitals, Inc.

United States ASN-TJUH ARIN 5 IPv4 prefixes 17 IPv6 prefixes

IPv4 addresses

61,440

IPv6 /48 networks

4,877

RPKI

22 valid0 no ROA

Peers and downstreams

Holder

AS name: ASN-TJUH
Description: Thomas Jefferson University Hospital Information Systems 130 South 9th Street, Suite 600 Philadelphia, PA 19107 US
Organisation: Thomas Jefferson University Hospitals, Inc.
Abuse contact: Not published
Assigned: 2001-10-28
Registered: 2001-10-29
Record last changed: 2022-03-29 19:39 UTC

147.140.0.0/18 147.140.128.0/17 147.140.255.0/24 147.140.80.0/20 147.140.96.0/19

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 85/100

pass	Prefixes covered by valid ROAs 22 of 22 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 17 IPv6 prefixes.	15/15
pass	More than one upstream 2 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@jefferson.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 2022-03-29.	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/22644"><img src="https://ip-fd.net/badge/asn/22644/health.svg" alt="AS22644 network health on IP-FD.net"></a>

Markdown

[![AS22644 network health](https://ip-fd.net/badge/asn/22644/health.svg)](https://ip-fd.net/asn/22644)

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

Routing changes

Last 30 days

2026-10-04 23:09 UTC	Relationship changed	AS33659	upstream to peer
2026-10-04 23:09 UTC	Relationship changed	AS174	upstream to peer

WHOIS

aut-num:        AS22644
as-name:        TJUH
handle:         AS22644
registrant:     TJUH-1 (Thomas Jefferson University Hospitals, Inc.)
noc,routing:    NOC33462-ARIN (NOC) <noc@jefferson.edu>
abuse:          ABUSE8441-ARIN (Abuse) <abuse@jefferson.edu>
technical,administrative:RUIZT9-ARIN (Thomas Ruiz) <thomas.ruiz@jefferson.edu>
technical:      WOOTO8-ARIN (Steven Wooton) <steven.wooton@jefferson.edu>
dns:            HOSTM2171-ARIN (Hostmaster) <hostmaster@jefferson.edu>
technical:      DWW11-ARIN (David William Weber) <david.weber@jefferson.edu>
abuse,technical,noc:ERNST4-ARIN (Matthew Ernst) <Matthew.Enst@jefferson.edu>
last changed:   2022-03-29T15:39:44-04:00
registration:   2001-10-29T00:00:00-05:00
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/22644

const res = await fetch('https://ip-fd.net/api/v1/asn/22644', {
  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/22644', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/22644');
curl_setopt($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/22644", 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.

AS46887	Crown Castle Fiber LLC CROWNCASTLE-AS46887
AS399855	Keystone REN, LLC KEYSTONEREN

AS174
AS33659	Comcast Cable Communications, LLC CMCS