ASN AS3709 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS3709?

AS3709 is listed under City of San Antonio.

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?

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AS3709 City of San Antonio | IPGeolocation.io

ASN Lookup Tool

City of San Antonio sanantonio.gov

US 37 Routes

AS Data

AS3709

AS3709 – City of San Antonio

AS Number	3709
AS Name	NET-CITY-SA
Organization	City of San Antonio (csa-12)
Country	US
Website	sanantonio.gov
Number of IPv4 Routes	37
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	1994-07-18

ASN Intelligence API for production workflows

Use ASN data for AS3709 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
161.226.239.0/24	AS3709	City of San Antonio	City of San Antonio	256
161.226.213.0/24	AS3709	City of San Antonio	City of San Antonio	256
161.226.174.0/24	AS3709	City of San Antonio	City of San Antonio	256
161.226.242.0/24	AS3709	City of San Antonio	City of San Antonio	256
161.226.144.0/24	AS3709	City of San Antonio	City of San Antonio	256
161.226.131.0/24	AS3709	City of San Antonio	City of San Antonio	256
161.226.201.0/24	AS3709	City of San Antonio	City of San Antonio	256
161.226.0.0/16	AS3709	City of San Antonio	City of San Antonio	65536
161.226.122.0/24	AS3709	City of San Antonio	City of San Antonio	256
161.226.36.0/24	AS3709	City of San Antonio	City of San Antonio	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:       3709
ASName:         NET-CITY-SA
ASHandle:       AS3709
RegDate:        1994-07-18
Updated:        2009-05-13
Ref:            https://rdap.arin.net/registry/autnum/3709


OrgName:        City of San Antonio
OrgId:          CSA-12
Address:        515 S. Frio
City:           San Antonio
StateProv:      TX
PostalCode:     78207
Country:        US
RegDate:        1993-03-05
Updated:        2019-11-18
Ref:            https://rdap.arin.net/registry/entity/CSA-12


OrgTechHandle: CIA16-ARIN
OrgTechName:   CoSA IP Admin
OrgTechPhone:  +1-210-207-3399 
OrgTechEmail:  ITNetwork@sanantonio.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/CIA16-ARIN

OrgAbuseHandle: CIA16-ARIN
OrgAbuseName:   CoSA IP Admin
OrgAbusePhone:  +1-210-207-3399 
OrgAbuseEmail:  ITNetwork@sanantonio.gov
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CIA16-ARIN

OrgNOCHandle: CIA16-ARIN
OrgNOCName:   CoSA IP Admin
OrgNOCPhone:  +1-210-207-3399 
OrgNOCEmail:  ITNetwork@sanantonio.gov
OrgNOCRef:    https://rdap.arin.net/registry/entity/CIA16-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

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "3709",
    "as_handle" : "AS3709",
    "as_name" : "NET-CITY-SA",
    "tech_contacts" : [ "CIA16-ARIN" ],
    "abuse_contacts" : [ "CIA16-ARIN" ],
    "date_created" : "1994-07-18",
    "date_updated" : "2009-05-13",
    "source" : "https://rdap.arin.net/registry/autnum/3709"
  } ],
  "organization" : {
    "handle" : "CSA-12",
    "name" : "City of San Antonio",
    "address" : [ "515 S. Frio", "San Antonio", "TX", "78207", "US" ],
    "street" : "S. Frio",
    "city" : "San Antonio",
    "state" : "TX",
    "zip_code" : "78207",
    "country" : [ "US" ],
    "date_created" : "1993-03-05",
    "date_updated" : "2019-11-18",
    "source" : "https://rdap.arin.net/registry/entity/CSA-12",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "CIA16-ARIN",
    "name" : "CoSA IP Admin",
    "email" : [ "ITNetwork@sanantonio.gov" ],
    "phone" : [ "+1-210-207-3399" ],
    "source" : "https://rdap.arin.net/registry/entity/CIA16-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "CIA16-ARIN",
    "name" : "CoSA IP Admin",
    "email" : [ "ITNetwork@sanantonio.gov" ],
    "phone" : [ "+1-210-207-3399" ],
    "source" : "https://rdap.arin.net/registry/entity/CIA16-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS7018	AT&T Enterprises, LLC	US
AS11427	Charter Communications Inc	US

Upstreams

AS Number	Description	Country
AS7018	AT&T Enterprises, LLC	US
AS11427	Charter Communications Inc	US