AS12276 San Francisco Metropolitan Internet Exchange (SFMIX)

United States SFMIX-MGMT ARIN 1 IPv4 prefix 2 IPv6 prefixes

IPv4 addresses

256

IPv6 /48 networks

RPKI

3 valid0 no ROA

Peers and downstreams

Holder

AS name: SFMIX-MGMT
Description: SFMIX (San Francisco Metropolitan Internet Exchange) Administrative ASN
Organisation: San Francisco Metropolitan Internet Exchange (SFMIX)
Abuse contact: Not published
Assigned: 2007-06-03
Registered: 2007-06-04
Record last changed: 2014-06-12 10:11 UTC

192.33.255.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 85/100

pass	Prefixes covered by valid ROAs 3 of 3 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 2 IPv6 prefixes.	15/15
pass	More than one upstream 3 upstreams seen in BGP.	10/10
pass	Working abuse contact tech-c@sfmix.org 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 2014-06-12.	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/12276"><img src="https://ip-fd.net/badge/asn/12276/health.svg" alt="AS12276 network health on IP-FD.net"></a>

Markdown

[![AS12276 network health](https://ip-fd.net/badge/asn/12276/health.svg)](https://ip-fd.net/asn/12276)

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

Routing changes

Last 30 days

2026-10-04 12:47 UTC

Relationship changed

AS10111

upstream to peer

WHOIS

aut-num:        AS12276
as-name:        SFMIX-MGMT
handle:         AS12276
remarks:        This AS facilitates the SFMIX looking glass & management prefixes.
registrant:     SFMIES (San Francisco Metropolitan Internet Exchange (SFMIX))
abuse,technical:STRA-ARIN (SFMIX Technical Role Account) <tech-c@sfmix.org>
technical:      LASSO11-ARIN (Jonathan Lassoff) <jof@thejof.com>
administrative: MPE54-ARIN (Matt Peterson) <matt+arin@peterson.org>
technical:      TP47-ARIN (Tim Pozar) <pozar@twop.co>
last changed:   2014-06-12T06:11:11-04:00
registration:   2007-06-04T16:08:19-04:00
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/12276

const res = await fetch('https://ip-fd.net/api/v1/asn/12276', {
  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/12276', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/12276');
curl_setopt($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/12276", 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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