156.39.136.0/21

AS21589 · City of San Jose

Need more data or want to access it via API or data downloads? Sign up to get free access

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:        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

Nearby Ranges

BGP prefixes that overlap with 156.39.0.0/16

No nearby ranges found.

Hosted domains

There are no domains currently hosted on this ASN.

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

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

IP Address	ASN	Details
156.39.136.5	AS21589 City of San Jose	`0.40ms` 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
212.251.66.213	AS1241 Forthnet	`1.65ms` from Athens, GR
191.104.87.165	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`3.05ms` from Bogota, CO
108.129.245.245	AS16509 Amazon.com, Inc.	`0.38ms` from Dublin, IE
187.28.164.53	AS4230 CLARO S.A.	`0.38ms` from Fortaleza, BR
45.250.186.101	AS4816 China Telecom (Group)	`2.43ms` from Guangzhou, CN
114.98.44.21	AS4134 CHINANET-BACKBONE	`10.53ms` from Huai'an, CN
89.212.119.117	AS34779 T-2, d.o.o.	`1.31ms` from Ljubljana, SI
154.197.56.245	AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED	`0.17ms` from Los Angeles, US
79.7.68.213	AS3269 Telecom Italia S.p.A.	`7.34ms` from Milan, IT
173.232.170.197	AS62904 Eonix Corporation	`0.23ms` from New York City, US
174.53.107.53	AS7922 Comcast Cable Communications, LLC	`8.28ms` from Orlando, US
187.207.121.117	AS8151 UNINET	`3.85ms` from Santiago de Queretaro, MX
201.113.197.21	AS8151 UNINET	`3.32ms` from Santiago de Queretaro, MX
121.125.161.85	AS9318 SK Broadband Co Ltd	`1.57ms` from Seoul, KR
52.95.215.245	AS16509 Amazon.com, Inc.	`0.44ms` from Singapore, SG
175.163.83.21	AS4837 CHINA UNICOM China169 Backbone	`7.86ms` from Tieling, CN
110.2.6.69	AS10013 FreeBit Co.,Ltd.	`3.96ms` from Tokyo, JP
116.255.225.101	AS4837 CHINA UNICOM China169 Backbone	`0.23ms` from Zhengzhou, CN
51.158.170.213	AS12876 Scaleway SAS	`0.28ms` from Amsterdam, NL
185.48.100.149	AS8368 Dstny BE N.V.	`0.93ms` from Amsterdam, NL
117.139.88.133	AS9808 China Mobile Communications Group Co., Ltd.	`6.26ms` from Chengdu, CN
23.71.224.69	AS7922 Comcast Cable Communications, LLC	`6.34ms` from Chicago, US
197.225.36.69	AS23889 Mauritius Telecom Ltd	`2.16ms` from Ebene, MU
27.71.111.133	AS7552 Viettel Group	`16.78ms` from Hong Kong, HK
81.144.135.197	AS2856 British Telecommunications PLC	`1.63ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -f4 -m7 156.39.143.193

traceroute to 156.39.143.193 (156.39.143.193): 7 hops max, 52 byte packets

4 [AS60345] 46.18.110.210 11.345 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Copenhagen, DK

On March 21st 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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales