AS11901 County of Sacramento

United States COS-AS ARIN 2 IPv4 prefixes 0 IPv6 prefixes

IPv4 addresses

1,024

IPv6 /48 networks

RPKI

0 valid2 no ROA

Peers and downstreams

Holder

AS name: COS-AS
Description: County of Sacramento 799 G Street Sacramento, CA 95814 US
Organisation: County of Sacramento
Abuse contact: Not published
Assigned: 2007-05-28
Registered: 2007-05-29
Record last changed: 2012-03-02 13:03 UTC

208.79.244.0/23 208.79.246.0/23

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade D · 45/100

fail	Prefixes covered by valid ROAs 0 of 2 announced prefixes are RPKI valid, 2 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 2 upstreams seen in BGP.	10/10
pass	Working abuse contact huycka@saccounty.net 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 2012-03-02.	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/11901"><img src="https://ip-fd.net/badge/asn/11901/health.svg" alt="AS11901 network health on IP-FD.net"></a>

Markdown

[![AS11901 network health](https://ip-fd.net/badge/asn/11901/health.svg)](https://ip-fd.net/asn/11901)

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

Routing changes

Last 30 days

2026-10-04 06:50 UTC	New neighbour	AS23281	downstream
2026-10-04 06:50 UTC	Relationship changed	AS7018	upstream to peer

WHOIS

aut-num:        AS11901
as-name:        COSWAN
handle:         AS11901
registrant:     COUNTY-1 (County of Sacramento)
abuse,noc,technical:PIM-ARIN (Perimeter Infrastructure Management) <huycka@saccounty.net>
last changed:   2012-03-02T08:03:18-05:00
registration:   2007-05-29T16:54:34-04:00
source:         ARIN (RDAP)

Routing data

Updated 1 days ago

Registry record

Fetched 1 days ago 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/11901

const res = await fetch('https://ip-fd.net/api/v1/asn/11901', {
  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/11901', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/11901');
curl_setopt($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/11901", 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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