ASN Lookup Tool

County of San Bernardino isd.sbcounty.gov US US 25 Routes

AS Data

AS19739

AS19739 – County of San Bernardino

AS Number 19739
AS Name COUNTY-SANBERNARDINO
Organization County of San Bernardino(csb-1)
Country US
Website isd.sbcounty.gov
Number of IPv4 Routes 25
Number of IPv6 Routes 0
ASN type GOVERNMENT
Registry ARIN
Date Allocated 2001-02-08

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Use ASN data for AS19739 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
170.164.14.0/24 256
170.164.84.0/23 512
170.164.0.0/24 256
170.164.71.0/24 256
170.164.116.0/22 1024
170.164.165.0/24 256
170.164.42.0/23 512
170.164.101.0/24 256
170.164.11.0/24 256
170.164.75.0/24 256

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:       19739
ASName:         COUNTY-SANBERNARDINO
ASHandle:       AS19739
RegDate:        2001-02-08
Updated:        2021-08-19    
Ref:            https://rdap.arin.net/registry/autnum/19739


OrgName:        County of San Bernardino
OrgId:          CSB-1
Address:        OMS/SSD
Address:         670 E.Gilbert St.
City:           San Bernardino
StateProv:      CA
PostalCode:     92415-0915
Country:        US
RegDate:        1992-01-17
Updated:        2021-08-23
Ref:            https://rdap.arin.net/registry/entity/CSB-1


OrgAbuseHandle: DVR-ARIN
OrgAbuseName:   Robbins, David V
OrgAbusePhone:  +1-909-388-5553 
OrgAbuseEmail:  david.robbins@itd.sbcounty.gov
OrgAbuseRef:    https://rdap.arin.net/registry/entity/DVR-ARIN

OrgTechHandle: DVR-ARIN
OrgTechName:   Robbins, David V
OrgTechPhone:  +1-909-388-5553 
OrgTechEmail:  david.robbins@itd.sbcounty.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/DVR-ARIN

RTechHandle: DVR-ARIN
RTechName:   Robbins, David V
RTechPhone:  +1-909-388-5553 
RTechEmail:  david.robbins@itd.sbcounty.gov
RTechRef:    https://rdap.arin.net/registry/entity/DVR-ARIN

RAbuseHandle: DVR-ARIN
RAbuseName:   Robbins, David V
RAbusePhone:  +1-909-388-5553 
RAbuseEmail:  david.robbins@itd.sbcounty.gov
RAbuseRef:    https://rdap.arin.net/registry/entity/DVR-ARIN

RNOCHandle: DVR-ARIN
RNOCName:   Robbins, David V
RNOCPhone:  +1-909-388-5553 
RNOCEmail:  david.robbins@itd.sbcounty.gov
RNOCRef:    https://rdap.arin.net/registry/entity/DVR-ARIN

RTechHandle: EJM33-ARIN
RTechName:   Montengero, Eduardo  J
RTechPhone:  +1-909-388-5571 
RTechEmail:  emontenegro@isd.sbcounty.gov
RTechRef:    https://rdap.arin.net/registry/entity/EJM33-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
AS20001 Charter Communications Inc US
AS5650 Frontier Communications of America, Inc. US
AS3356 Level 3 Parent, LLC US

Upstreams

AS Number Description Country
AS20001 Charter Communications Inc US
AS5650 Frontier Communications of America, Inc. US
AS3356 Level 3 Parent, LLC US

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Frequently Asked Questions

ASN AS19739 is an Autonomous System Number used to identify a network for BGP internet routing.
AS19739 is listed under County of San Bernardino.
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.