Autonomous System

AS21589 City of San Jose

GovernmentActiveUnited StatesARIN

AS21589 (CSJ-INTERNET) is a government network operated by City of San Jose in United States, registered with ARIN. It has 25 IPv4 prefixes with 10,752 addresses and 1 IPv6 prefix, which makes it the 9,747th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses10,752in 25 prefixes
IPv6 prefixes1≈ 1.2 × 10²⁴ addresses
Size rank#9,747of 82,200 active ASNs
Abuser scoreVery Lowunder 0.01% of its addresses flagged · method

Details

OrganizationCity of San Jose
AS nameCSJ-INTERNET
Websitesanjoseca.gov
Country United States (US)
Network typeGovernment
RegistryARIN
Abuse contactNetworkGroup@sanjoseca.gov
Registered2012-10-04
Last updated2012-10-04

IPv4 prefixes

25 prefixes · 10,752 addresses
NetworkAddressesFirst – last address
156.39.48.0/212,048156.39.48.0 – 156.39.55.255
156.39.136.0/212,048156.39.136.0 – 156.39.143.255
156.39.64.0/221,024156.39.64.0 – 156.39.67.255
156.39.0.0/24256156.39.0.0 – 156.39.0.255
156.39.1.0/24256156.39.1.0 – 156.39.1.255
156.39.2.0/24256156.39.2.0 – 156.39.2.255
156.39.3.0/24256156.39.3.0 – 156.39.3.255
156.39.5.0/24256156.39.5.0 – 156.39.5.255
156.39.10.0/24256156.39.10.0 – 156.39.10.255
156.39.11.0/24256156.39.11.0 – 156.39.11.255
156.39.12.0/24256156.39.12.0 – 156.39.12.255
156.39.13.0/24256156.39.13.0 – 156.39.13.255
156.39.15.0/24256156.39.15.0 – 156.39.15.255
156.39.28.0/24256156.39.28.0 – 156.39.28.255
156.39.60.0/24256156.39.60.0 – 156.39.60.255
156.39.62.0/24256156.39.62.0 – 156.39.62.255
156.39.63.0/24256156.39.63.0 – 156.39.63.255
156.39.68.0/24256156.39.68.0 – 156.39.68.255
156.39.69.0/24256156.39.69.0 – 156.39.69.255
156.39.73.0/24256156.39.73.0 – 156.39.73.255
156.39.99.0/24256156.39.99.0 – 156.39.99.255
156.39.125.0/24256156.39.125.0 – 156.39.125.255
156.39.127.0/24256156.39.127.0 – 156.39.127.255
156.39.131.0/24256156.39.131.0 – 156.39.131.255
156.39.160.0/24256156.39.160.0 – 156.39.160.255

IPv6 prefixes

1 prefix
  • 2001:470:f0::/48

Query AS21589 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS21589&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS21589, with or without a key:

curl "https://api.ipapi.is/?q=156.39.48.1"

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