ASN Lookup Tool

San Francisco Metropolitan Internet Exchange SFMIX sfmix.org US US 3 Routes

AS Data

AS12276

AS12276San Francisco Metropolitan Internet Exchange SFMIX

AS Number 12276
AS Name SFMIX-MGMT
Organization San Francisco Metropolitan Internet Exchange SFMIX(sfmies)
Country US
Website sfmix.org
Number of IPv4 Routes 1
Number of IPv6 Routes 2
ASN type ISP
Registry ARIN
Date Allocated 2007-06-04

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Use ASN data for AS12276 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
2620:11a:b000::/48 ~1×10²⁴
192.33.255.0/24 256
2620:11a:b000::/44 ~19×10²⁴

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       12276
ASName:         SFMIX-MGMT
ASHandle:       AS12276
RegDate:        2007-06-04
Updated:        2014-06-12
Comment:        This AS facilitates the SFMIX looking glass & management prefixes.    
Ref:            https://rdap.arin.net/registry/autnum/12276


OrgName:        San Francisco Metropolitan Internet Exchange (SFMIX)
OrgId:          SFMIES
Address:        PO Box 8243
City:           Emeryville
StateProv:      CA
PostalCode:     94662
Country:        US
RegDate:        2006-06-27
Updated:        2024-09-27
Ref:            https://rdap.arin.net/registry/entity/SFMIES


OrgTechHandle: STRA-ARIN
OrgTechName:   SFMIX Technical Role Account
OrgTechPhone:  +1-877-365-6246 
OrgTechEmail:  tech-c@sfmix.org
OrgTechRef:    https://rdap.arin.net/registry/entity/STRA-ARIN

OrgAbuseHandle: STRA-ARIN
OrgAbuseName:   SFMIX Technical Role Account
OrgAbusePhone:  +1-877-365-6246 
OrgAbuseEmail:  tech-c@sfmix.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/STRA-ARIN

OrgTechHandle: LASSO11-ARIN
OrgTechName:   Lassoff, Jonathan 
OrgTechPhone:  +1-415-215-2464 
OrgTechEmail:  jof@thejof.com
OrgTechRef:    https://rdap.arin.net/registry/entity/LASSO11-ARIN

OrgTechHandle: TP47-ARIN
OrgTechName:   Pozar, Tim 
OrgTechPhone:  +1-415-637-8512 
OrgTechEmail:  pozar@lns.com
OrgTechRef:    https://rdap.arin.net/registry/entity/TP47-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

Peers

AS Number Description Country
AS35008 Kerfuffle, LLC US
AS10111 Zeofast Network CN
AS34927 iFog GmbH CH
AS6939 Hurricane Electric LLC US
AS400587 Ryamer, LLC US
AS36086 Telx US
AS38439 ZFS.RENT LLC US
AS2734 CoreSite US
AS52025 ParadoxNetworks Limited GB
AS40271 San Francisco Metropolitan Internet Exchange (SFMIX) US

Upstreams

AS Number Description Country
AS10111 Zeofast Network CN
AS1299 Arelion Sweden AB SE
AS6939 Hurricane Electric LLC US
AS36086 Telx US

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Frequently Asked Questions

ASN AS12276 is an Autonomous System Number used to identify a network for BGP internet routing.
AS12276 is listed under San Francisco Metropolitan Internet Exchange SFMIX.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.