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AS21589
City of San Jose·
IP address details
AS21589
City of San Jose·
  • Summary IP.CC
  • Prefixes
  • Peers
  • Upstream
  • Downstream
  • Graphs
  • World Map
  • WHOIS Details
  • IX

Summary

  • As Number
    AS21589
  • Org Name
    City of San Jose
  • Country
  • Country Code
  • Website
  • Regional Registry
    IANA
  • Allocated Date
    4th October 2012
  • Allocated Status
    Assigned
  • Ipv4 Prefixes
    24
  • Ipv6 Prefixes
    1
  • Ipv4 Peers
    3
  • Ipv6 Peers
    1
  • Ipv4 Upstreams
    3
  • Ipv6 Upstreams
    1

Prefixes

There are 24 IPv4 Prefixes for this ASN.

Country
Announced Prefix
Description
Parent Prefix
RIR
United States156.39.0.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.1.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.10.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.11.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.12.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.125.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.127.0/24
City of San Jose
156.39.0.0/16ARIN
156.39.13.0/24
--
156.39.131.0/24
--
United States156.39.15.0/24
City of San Jose
156.39.0.0/16ARIN
156.39.160.0/24
--
United States156.39.2.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.28.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.3.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.48.0/21
City of San Jose
156.39.0.0/16ARIN
United States156.39.5.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.60.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.62.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.63.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.64.0/22
City of San Jose
156.39.0.0/16ARIN
  • 1
  • 2
IP Ranges API
Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.
Useful for GameTech, and Advertising Technology
IP Ranges APIIP.CC
IP Ranges API
Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.
Useful for GameTech, and Advertising Technology
IP Ranges APIIP.CC

Peers

There are 3 IPv4 Peers for this ASN.

Country
ASN
Description
IPv6
United StatesAS3257
GTT
false
United StatesAS6939
Hurricane Electric LLC
true
United StatesAS7018
AT&T Services, Inc.
false
  • 1
ASN data
ASN details for every IP address and every ASN’s related domains, allocation date, registry name, total number of IP addresses, and assigned prefixes.
Useful for Cybersecurity
ASN APIIP.CCASN DatabaseIP.CC
ASN data
ASN details for every IP address and every ASN’s related domains, allocation date, registry name, total number of IP addresses, and assigned prefixes.
Useful for Cybersecurity
ASN APIIP.CCASN DatabaseIP.CC

Upstream

There are 3 IPv4 Upstreams for this ASN.

Country
ASN
Description
IPv6
United StatesAS3257
GTT
false
United StatesAS6939
Hurricane Electric LLC
true
United StatesAS7018
AT&T Services, Inc.
false
  • 1
ASN data
ASN details for every IP address and every ASN’s related domains, allocation date, registry name, total number of IP addresses, and assigned prefixes.
Useful for Cybersecurity
ASN APIIP.CCASN DatabaseIP.CC
ASN data
ASN details for every IP address and every ASN’s related domains, allocation date, registry name, total number of IP addresses, and assigned prefixes.
Useful for Cybersecurity
ASN APIIP.CCASN DatabaseIP.CC

Downstream

There are 0 IPv4 Downstreams for this ASN.

Country
ASN
Description
IPv6
暂无数据
  • 1
ASN data
ASN details for every IP address and every ASN’s related domains, allocation date, registry name, total number of IP addresses, and assigned prefixes.
Useful for Cybersecurity
ASN APIIP.CCASN DatabaseIP.CC
ASN data
ASN details for every IP address and every ASN’s related domains, allocation date, registry name, total number of IP addresses, and assigned prefixes.
Useful for Cybersecurity
ASN APIIP.CCASN DatabaseIP.CC

Graphs

AS21589 Combined Upstream Graph AS21589 AS21589 AS3257 AS3257 AS21589->AS3257 AS1299 AS1299 AS3257->AS1299 AS6453 AS6453 AS3257->AS6453 AS1239 AS1239 AS3257->AS1239 AS3356 AS3356 AS3257->AS3356 AS7018 AS7018 AS3257->AS7018 AS2497 AS2497 AS3257->AS2497 AS2914 AS2914 AS3257->AS2914 AS6461 AS6461 AS3257->AS6461 AS174 AS174 AS3257->AS174 AS3549 AS3549 AS3356->AS3549 AS209 AS209 AS3356->AS209
AS21589 Combined Upstream Graph AS21589 AS21589 AS3257 AS3257 AS21589->AS3257 AS1299 AS1299 AS3257->AS1299 AS6453 AS6453 AS3257->AS6453 AS1239 AS1239 AS3257->AS1239 AS3356 AS3356 AS3257->AS3356 AS7018 AS7018 AS3257->AS7018 AS2497 AS2497 AS3257->AS2497 AS2914 AS2914 AS3257->AS2914 AS6461 AS6461 AS3257->AS6461 AS174 AS174 AS3257->AS174 AS3549 AS3549 AS3356->AS3549 AS209 AS209 AS3356->AS209

World Map

WHOIS Details


#
# 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 1997-2025, American Registry for Internet Numbers, Ltd.
#


ASNumber: 21589
ASName: CSJ-INTERNET
ASHandle: AS21589
RegDate: 2012-10-04
Updated: 2012-10-04
Ref: https://rdap.arin.net/registry/autnum/21589


OrgName: City of San Jose
OrgId: CSJ-1
Address: 200 E. Santa Clara St.
City: San Jose
StateProv: CA
PostalCode: 95113
Country: US
RegDate: 1991-12-09
Updated: 2019-05-21
Ref: https://rdap.arin.net/registry/entity/CSJ-1


OrgAbuseHandle: DNSAD188-ARIN
OrgAbuseName: DNS Admins
OrgAbusePhone: +1-408-793-6809
OrgAbuseEmail: [email protected]
OrgAbuseRef: https://rdap.arin.net/registry/entity/DNSAD188-ARIN

OrgTechHandle: CASTI255-ARIN
OrgTechName: Castillo, James
OrgTechPhone: +1-408-793-6809
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/CASTI255-ARIN

OrgTechHandle: DNSAD188-ARIN
OrgTechName: DNS Admins
OrgTechPhone: +1-408-793-6809
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/DNSAD188-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 1997-2025, American Registry for Internet Numbers, Ltd.
#

#
# 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 1997-2025, American Registry for Internet Numbers, Ltd.
#


ASNumber: 21589
ASName: CSJ-INTERNET
ASHandle: AS21589
RegDate: 2012-10-04
Updated: 2012-10-04
Ref: https://rdap.arin.net/registry/autnum/21589


OrgName: City of San Jose
OrgId: CSJ-1
Address: 200 E. Santa Clara St.
City: San Jose
StateProv: CA
PostalCode: 95113
Country: US
RegDate: 1991-12-09
Updated: 2019-05-21
Ref: https://rdap.arin.net/registry/entity/CSJ-1


OrgAbuseHandle: DNSAD188-ARIN
OrgAbuseName: DNS Admins
OrgAbusePhone: +1-408-793-6809
OrgAbuseEmail: [email protected]
OrgAbuseRef: https://rdap.arin.net/registry/entity/DNSAD188-ARIN

OrgTechHandle: CASTI255-ARIN
OrgTechName: Castillo, James
OrgTechPhone: +1-408-793-6809
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/CASTI255-ARIN

OrgTechHandle: DNSAD188-ARIN
OrgTechName: DNS Admins
OrgTechPhone: +1-408-793-6809
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/DNSAD188-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 1997-2025, American Registry for Internet Numbers, Ltd.
#

IX

Country
IX
IPv4
IPv6
Port Speed
暂无数据
  • 1
Country
IX
IPv4
IPv6
Port Speed
暂无数据
  • 1
IP.CC
Search
IP address details
AS21589
City of San Jose·
IP address details
AS21589
City of San Jose·

Summary

  • As Number
    AS21589
  • Org Name
    City of San Jose
  • Country
  • Country Code
  • Website
  • Regional Registry
    IANA
  • Allocated Date
    4th October 2012
  • Allocated Status
    Assigned
  • Ipv4 Prefixes
    24
  • Ipv6 Prefixes
    1
  • Ipv4 Peers
    3
  • Ipv6 Peers
    1
  • Ipv4 Upstreams
    3
  • Ipv6 Upstreams
    1

Prefixes

There are 24 IPv4 Prefixes for this ASN.

Country
Announced Prefix
Description
Parent Prefix
RIR
United States156.39.0.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.1.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.10.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.11.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.12.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.125.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.127.0/24
City of San Jose
156.39.0.0/16ARIN
156.39.13.0/24
--
156.39.131.0/24
--
United States156.39.15.0/24
City of San Jose
156.39.0.0/16ARIN
156.39.160.0/24
--
United States156.39.2.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.28.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.3.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.48.0/21
City of San Jose
156.39.0.0/16ARIN
United States156.39.5.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.60.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.62.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.63.0/24
City of San Jose
156.39.0.0/16ARIN
United States156.39.64.0/22
City of San Jose
156.39.0.0/16ARIN
  • 1
  • 2
IP Ranges API
Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.
Useful for GameTech, and Advertising Technology
IP Ranges APIIP.CC
IP Ranges API
Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.
Useful for GameTech, and Advertising Technology
IP Ranges APIIP.CC

Peers

There are 3 IPv4 Peers for this ASN.

Country
ASN
Description
IPv6
United StatesAS3257
GTT
false
United StatesAS6939
Hurricane Electric LLC
true
United StatesAS7018
AT&T Services, Inc.
false
  • 1
ASN data
ASN details for every IP address and every ASN’s related domains, allocation date, registry name, total number of IP addresses, and assigned prefixes.
Useful for Cybersecurity
ASN APIIP.CCASN DatabaseIP.CC
ASN data
ASN details for every IP address and every ASN’s related domains, allocation date, registry name, total number of IP addresses, and assigned prefixes.
Useful for Cybersecurity
ASN APIIP.CCASN DatabaseIP.CC

Upstream

There are 3 IPv4 Upstreams for this ASN.

Country
ASN
Description
IPv6
United StatesAS3257
GTT
false
United StatesAS6939
Hurricane Electric LLC
true
United StatesAS7018
AT&T Services, Inc.
false
  • 1
ASN data
ASN details for every IP address and every ASN’s related domains, allocation date, registry name, total number of IP addresses, and assigned prefixes.
Useful for Cybersecurity
ASN APIIP.CCASN DatabaseIP.CC
ASN data
ASN details for every IP address and every ASN’s related domains, allocation date, registry name, total number of IP addresses, and assigned prefixes.
Useful for Cybersecurity
ASN APIIP.CCASN DatabaseIP.CC

Downstream

There are 0 IPv4 Downstreams for this ASN.

Country
ASN
Description
IPv6
暂无数据
  • 1
ASN data
ASN details for every IP address and every ASN’s related domains, allocation date, registry name, total number of IP addresses, and assigned prefixes.
Useful for Cybersecurity
ASN APIIP.CCASN DatabaseIP.CC
ASN data
ASN details for every IP address and every ASN’s related domains, allocation date, registry name, total number of IP addresses, and assigned prefixes.
Useful for Cybersecurity
ASN APIIP.CCASN DatabaseIP.CC

Graphs

AS21589 Combined Upstream Graph AS21589 AS21589 AS3257 AS3257 AS21589->AS3257 AS1299 AS1299 AS3257->AS1299 AS6453 AS6453 AS3257->AS6453 AS1239 AS1239 AS3257->AS1239 AS3356 AS3356 AS3257->AS3356 AS7018 AS7018 AS3257->AS7018 AS2497 AS2497 AS3257->AS2497 AS2914 AS2914 AS3257->AS2914 AS6461 AS6461 AS3257->AS6461 AS174 AS174 AS3257->AS174 AS3549 AS3549 AS3356->AS3549 AS209 AS209 AS3356->AS209
AS21589 Combined Upstream Graph AS21589 AS21589 AS3257 AS3257 AS21589->AS3257 AS1299 AS1299 AS3257->AS1299 AS6453 AS6453 AS3257->AS6453 AS1239 AS1239 AS3257->AS1239 AS3356 AS3356 AS3257->AS3356 AS7018 AS7018 AS3257->AS7018 AS2497 AS2497 AS3257->AS2497 AS2914 AS2914 AS3257->AS2914 AS6461 AS6461 AS3257->AS6461 AS174 AS174 AS3257->AS174 AS3549 AS3549 AS3356->AS3549 AS209 AS209 AS3356->AS209

World Map

WHOIS Details


#
# 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 1997-2025, American Registry for Internet Numbers, Ltd.
#


ASNumber: 21589
ASName: CSJ-INTERNET
ASHandle: AS21589
RegDate: 2012-10-04
Updated: 2012-10-04
Ref: https://rdap.arin.net/registry/autnum/21589


OrgName: City of San Jose
OrgId: CSJ-1
Address: 200 E. Santa Clara St.
City: San Jose
StateProv: CA
PostalCode: 95113
Country: US
RegDate: 1991-12-09
Updated: 2019-05-21
Ref: https://rdap.arin.net/registry/entity/CSJ-1


OrgAbuseHandle: DNSAD188-ARIN
OrgAbuseName: DNS Admins
OrgAbusePhone: +1-408-793-6809
OrgAbuseEmail: [email protected]
OrgAbuseRef: https://rdap.arin.net/registry/entity/DNSAD188-ARIN

OrgTechHandle: CASTI255-ARIN
OrgTechName: Castillo, James
OrgTechPhone: +1-408-793-6809
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/CASTI255-ARIN

OrgTechHandle: DNSAD188-ARIN
OrgTechName: DNS Admins
OrgTechPhone: +1-408-793-6809
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/DNSAD188-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 1997-2025, American Registry for Internet Numbers, Ltd.
#

#
# 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 1997-2025, American Registry for Internet Numbers, Ltd.
#


ASNumber: 21589
ASName: CSJ-INTERNET
ASHandle: AS21589
RegDate: 2012-10-04
Updated: 2012-10-04
Ref: https://rdap.arin.net/registry/autnum/21589


OrgName: City of San Jose
OrgId: CSJ-1
Address: 200 E. Santa Clara St.
City: San Jose
StateProv: CA
PostalCode: 95113
Country: US
RegDate: 1991-12-09
Updated: 2019-05-21
Ref: https://rdap.arin.net/registry/entity/CSJ-1


OrgAbuseHandle: DNSAD188-ARIN
OrgAbuseName: DNS Admins
OrgAbusePhone: +1-408-793-6809
OrgAbuseEmail: [email protected]
OrgAbuseRef: https://rdap.arin.net/registry/entity/DNSAD188-ARIN

OrgTechHandle: CASTI255-ARIN
OrgTechName: Castillo, James
OrgTechPhone: +1-408-793-6809
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/CASTI255-ARIN

OrgTechHandle: DNSAD188-ARIN
OrgTechName: DNS Admins
OrgTechPhone: +1-408-793-6809
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/DNSAD188-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 1997-2025, American Registry for Internet Numbers, Ltd.
#

IX

Country
IX
IPv4
IPv6
Port Speed
暂无数据
  • 1
Country
IX
IPv4
IPv6
Port Speed
暂无数据
  • 1
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What is an ASN?
Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.
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