156.39.28.0/24

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
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:        [email protected]
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:        [email protected]
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 156.39.0.0/16

No nearby ranges found.

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
156.39.28.1	sjpermits.org	1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
156.39.28.103	AS21589 City of San Jose	`1.20ms` 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
96.189.194.88	AS53297 Comcast Cable Communications, LLC	`0.05ms` from Chicago, US
181.105.83.168	AS7303 Telecom Argentina S.A.	`2.90ms` from Cordoba, AR
73.243.221.200	AS7922 Comcast Cable Communications, LLC	`7.13ms` from Denver, US
168.0.103.136	AS265232 WLAN SISTEMAS LTDA ME	`19.02ms` from Fortaleza, BR
125.211.190.56	AS4837 CHINA UNICOM China169 Backbone	`4.89ms` from Harbin, CN
98.39.22.88	AS7922 Comcast Cable Communications, LLC	`8.07ms` from Houston, US
218.234.235.120	AS9318 SK Broadband Co Ltd	`1.73ms` from Incheon, KR
79.77.48.168	AS13285 TalkTalk Communications Limited	`4.06ms` from London, GB
13.41.187.136	AS16509 Amazon.com, Inc.	`0.64ms` from London, GB
203.213.18.168	AS7545 TPG Telecom Limited	`1.12ms` from Perth, AU
71.237.173.136	AS7922 Comcast Cable Communications, LLC	`9.41ms` from Portland, US
4.151.93.184	AS8075 Microsoft Corporation	`0.22ms` from San Antonio, US
203.247.220.232	AS45363 SunMoon University	`4.53ms` from Seoul, KR
211.229.189.88	AS4766 Korea Telecom	`3.29ms` from Seoul, KR
189.47.96.200	AS27699 TELEFÔNICA BRASIL S.A	`1.58ms` from São Paulo, BR
60.114.96.152	AS17676 SoftBank Corp.	`3.21ms` from Tokyo, JP
154.203.209.216	AS214143 SKYDIGITAL TELECOM LTD	`1.07ms` from Bangkok, TH
109.131.27.120	AS5432 Proximus NV	`2.90ms` from Brussels, BE
3.254.121.24	AS16509 Amazon.com, Inc.	`0.28ms` from Dublin, IE
213.190.156.8	AS5466 Eircom Limited	`3.07ms` from Dublin, IE
79.247.161.120	AS3320 Deutsche Telekom AG	`4.76ms` from Hamburg, DE
116.107.114.200	AS7552 Viettel Group	`2.84ms` from Hanoi, VN
59.187.108.168	AS3786 LG DACOM Corporation	`3.29ms` from Incheon, KR
79.20.109.104	AS3269 Telecom Italia S.p.A.	`6.01ms` from Milan, IT
109.64.31.8	AS8551 Bezeq International Ltd.	`3.58ms` from Petaẖ Tiqva, IL

Traceroute

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

traceroute -a -n -q1 -f2 156.39.28.103

traceroute to 156.39.28.103 (156.39.28.103): 64 hops max, 52 byte packets

2 [AS917] 209.209.57.3 2.319 ms

3 [AS969] 199.119.64.100 1.636 ms

4 *

5 [AS6939] 184.105.65.113 3.624 ms

6 [AS6939] 184.105.65.32 0.692 ms

7 [AS6939] 72.52.101.146 1.136 ms

8 [AS21589] 156.39.5.227 0.935 ms

9 [AS21589] 156.39.28.103 1.448 ms

Measurement taken from

IPinfo ProbeNet in San Jose, US

On January 30th 2026

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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