AS21589 is the autonomous system of City of San Jose. It holds 10,752 IPv4 addresses in 18 prefixes plus 1 IPv6 ranges, mainly in 
United States.
By IPv4 addresses the network ranks #8,759 worldwide and #2,858 of 18,202 networks in United States.
The largest block is 156.39.136.0 to 156.39.143.255 with 2,048 addresses, geolocated to San Jose (Central San Jose).
- IPv4 addresses
- 10,752
- IPv4 prefixes
- 18
- World rank
- #8,759
- IPv6 ranges
- 1
Addresses by country
- United States 100%
Largest blocks
- 156.39.136.0 San Jose (Central San Jose)2,048
- 156.39.62.0 Fremont (East Industrial)2,048
- 156.39.48.0 San Jose (Central San Jose)2,048
- 156.39.10.0 Santa Clara1,024
- 156.39.0.0 Fremont (East Industrial)1,024
- 156.39.160.0 New York256
- 156.39.131.0 Fremont (East Industrial)256
- 156.39.127.0 San Jose256
Networks of similar size
10,752
10,752
10,752
10,752
10,752IPv4 prefixes
Questions and answers
Who owns AS21589?
Autonomous system AS21589 is operated by City of San Jose.
How many IP addresses does AS21589 have?
The network holds 10,752 IPv4 addresses in 18 prefixes, plus 1 IPv6 ranges.
Which country is AS21589 in?
The main country is United States.
How big is AS21589?
By IPv4 addresses it ranks #8,759 worldwide.
What is the largest address block of AS21589?
156.39.136.0 to 156.39.143.255, 2,048 addresses.