ASN AS11212 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS11212?

AS11212 is listed under COUNTY OF SONOMA.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS11212 COUNTY OF SONOMA | IPGeolocation.io

ASN Lookup Tool

COUNTY OF SONOMA sonoma-county.org

US 3 Routes

AS Data

AS11212

AS11212 – COUNTY OF SONOMA

AS Number	11212
AS Name	COUNTY-OF-SONOMA
Organization	COUNTY OF SONOMA(count-45)
Country	US
Website	sonoma-county.org
Number of IPv4 Routes	3
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	2007-05-21

ASN Intelligence API for production workflows

Use ASN data for AS11212 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
50.233.206.0/23	AS11212	COUNTY OF SONOMA	Comcast Cable Communications, LLC	512
12.202.169.0/24	AS11212	COUNTY OF SONOMA	COUNTY OF SONOMA	256
209.77.204.0/24	AS11212	COUNTY OF SONOMA	Sonoma County	256

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:       11212
ASName:         COUNTY-OF-SONOMA
ASHandle:       AS11212
RegDate:        2007-05-21
Updated:        2025-10-04    
Ref:            https://rdap.arin.net/registry/autnum/11212


OrgName:        COUNTY OF SONOMA
OrgId:          COUNT-45
Address:        585 FISCAL DR
City:           SANTA ROSA
StateProv:      CA
PostalCode:     95403
Country:        US
RegDate:        2007-04-17
Updated:        2025-07-14
Ref:            https://rdap.arin.net/registry/entity/COUNT-45


OrgAbuseHandle: WALSH268-ARIN
OrgAbuseName:   Walsh, John 
OrgAbusePhone:  +1-707-565-8253 
OrgAbuseEmail:  John.Walsh@sonomacounty.gov
OrgAbuseRef:    https://rdap.arin.net/registry/entity/WALSH268-ARIN

OrgTechHandle: KAISE105-ARIN
OrgTechName:   Kaiser, Jonathan 
OrgTechPhone:  +1-707-565-2712 
OrgTechEmail:  jon.kaiser@sonomacounty.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/KAISE105-ARIN

OrgAbuseHandle: ISO29-ARIN
OrgAbuseName:   Information Security Officer
OrgAbusePhone:  +1-707-565-5110 
OrgAbuseEmail:  iso@sonoma-county.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ISO29-ARIN

OrgTechHandle: WALSH268-ARIN
OrgTechName:   Walsh, John 
OrgTechPhone:  +1-707-565-8253 
OrgTechEmail:  John.Walsh@sonomacounty.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/WALSH268-ARIN

RTechHandle: KAISE105-ARIN
RTechName:   Kaiser, Jonathan 
RTechPhone:  +1-707-565-2712 
RTechEmail:  jon.kaiser@sonomacounty.gov
RTechRef:    https://rdap.arin.net/registry/entity/KAISE105-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
AS7018	AT&T Enterprises, LLC	US
AS33651	Comcast Cable Communications, LLC	US

Upstreams

AS Number	Description	Country
AS7018	AT&T Enterprises, LLC	US
AS33651	Comcast Cable Communications, LLC	US