156.39.10.0/24

AS21589 · City of San Jose

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Summary

Country	United States
Domain	sanjoseca.gov
ASN	AS21589
Registry	ARIN
ID	SAN-JOSE-NET

WHOIS Details

NetHandle:      NET-156-39-0-0-1
OrgID:          CSJ-1
Parent:         NET-156-0-0-0-0
NetName:        SAN-JOSE-NET
NetRange:       156.39.0.0 - 156.39.255.255
NetType:        allocation
OriginAS:       21589
RegDate:        1991-12-09
Updated:        2021-12-14
TechHandle:     DNSAD188-ARIN
Source:         ARIN


OrgID:          CSJ-1
OrgName:        City of San Jose
CanAllocate:    
Street:         200 E. Santa Clara St.
City:           San Jose
State/Prov:     CA
Country:        US
PostalCode:     95113
RegDate:        1991-12-09
Updated:        2019-05-21
OrgAdminHandle: DNSAD188-ARIN
OrgTechHandle:  CASTI255-ARIN
OrgTechHandle:  DNSAD188-ARIN
OrgAbuseHandle: DNSAD188-ARIN
Source:         ARIN


POCHandle:      CASTI255-ARIN
IsRole:         N
LastName:       Castillo
FirstName:      James
Street:         200 E. Santa Clara St, 11th Flr
City:           San Jose
State/Prov:     CA
Country:        US
PostalCode:     95113
RegDate:        2017-10-23
Updated:        2020-05-20
OfficePhone:    +1-408-793-6809
Mailbox:        james.castillo@sanjoseca.gov
Source:         ARIN


POCHandle:      DNSAD188-ARIN
IsRole:         Y
LastName:       DNS Admins
FirstName:      
Street:         200 E. Santa Clara St.
City:           San Jose
State/Prov:     CA
Country:        US
PostalCode:     95113
RegDate:        2007-01-24
Updated:        2021-05-11
OfficePhone:    +1-408-793-6809
OfficePhone:    +1-408-793-6831
Mailbox:        DNSAdmins@sanjoseca.gov
Mailbox:        NetworkGroup@sanjoseca.gov
Source:         ARIN

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

6 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
156.39.10.3	AS21589 City of San Jose	`0.57ms` from San Jose, US

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
195.169.162.8	AS1103 SURF B.V.	`3.45ms` from Amsterdam, NL
171.227.13.248	AS7552 Viettel Group	`1.37ms` from Ho Chi Minh City, VN
86.185.115.8	AS2856 British Telecommunications PLC	`7.53ms` from London, GB
134.199.21.200	AS23089 Hotwire Communications	`1.25ms` from Miami, US
75.203.74.232	AS6167 Verizon Business	`12.08ms` from Morris Plains, US
83.108.67.216	AS2119 Telenor Norge AS	`5.31ms` from Oslo, NO
123.132.22.232	AS4837 CHINA UNICOM China169 Backbone	`6.60ms` from Qingdao, CN
13.52.126.248	AS16509 Amazon.com, Inc.	`0.49ms` from San Jose, US
1.171.1.56	AS3462 Data Communication Business Group	`2.31ms` from Taipei, TW
102.156.95.216	AS37705 TOPNET	`2.03ms` from Tunis, TN
23.197.146.248	AS16625 Akamai Technologies, Inc.	`0.30ms` from Amsterdam, NL
169.238.66.216	AS54804 CableSouth Media III LLC	`13.36ms` from Dallas, US
104.185.154.136	AS7018 AT&T Enterprises, LLC	`1.83ms` from Dallas, US
51.146.69.248	AS5607 Sky UK Limited	`10.75ms` from London, GB
88.180.244.232	AS12322 Free SAS	`19.85ms` from Paris, FR
24.101.241.168	AS27364 Armstrong	`2.52ms` from Pittsburgh, US
186.189.100.104	AS52341 WOM S.A.	`0.44ms` from Santiago, CL
118.63.132.136	AS4766 Korea Telecom	`1.93ms` from Seoul, KR
125.244.44.136	AS9316 DACOM-PUBNETPLUS	`2.37ms` from Seoul, KR
115.215.250.104	AS4134 CHINANET-BACKBONE	`9.12ms` from Shanghai, CN
142.151.131.40	AS239 University of Toronto	`0.83ms` from Toronto, CA
46.139.166.248	AS5483 Magyar Telekom Plc.	`9.35ms` from Budapest, HU
45.176.20.8	AS267910 BRUNO Y ASOCIADOS SERVICIOS TECNOLOGICOS S.A	`10.32ms` from Buenos Aires, AR
76.157.221.40	AS7922 Comcast Cable Communications, LLC	`5.35ms` from Chicago, US
79.222.59.24	AS3320 Deutsche Telekom AG	`2.45ms` from Hamburg, DE

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 156.39.10.1

traceroute to 156.39.10.1 (156.39.10.1): 64 hops max, 52 byte packets

1 [AS63023] 38.89.70.1 0.173 ms

2 *

3 [AS6939] 184.105.64.138 4.055 ms

4 *

5 *

6 [AS6939] 72.52.101.146 19.789 ms

7 [] 156.39.72.19 20.566 ms

8 [AS21589] 156.39.10.1 19.852 ms

Measurement taken from

IPinfo ProbeNet in Seattle, US

On September 5th 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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