166.107.72.0/21

AS12054 · Alameda County

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

Summary

Country	United States
Domain	acgov.org
ASN	AS12054
Registry	ARIN
ID	ALAMEDA

WHOIS Details

NetHandle:      NET-166-107-0-0-1
OrgID:          ACDP
Parent:         NET-166-0-0-0-0
NetName:        ALAMEDA
NetRange:       166.107.0.0 - 166.107.255.255
NetType:        allocation
RegDate:        1993-12-03
Updated:        2021-12-14
TechHandle:     NETWO8351-ARIN
AbuseHandle:    NETWO8351-ARIN
NOCHandle:      NETWO8351-ARIN
Source:         ARIN


OrgID:          ACDP
OrgName:        Alameda County
CanAllocate:    
Street:         1221 Oak Street
Street:         RM 41, ITD Data Center
City:           Oakland
State/Prov:     CA
Country:        US
PostalCode:     94612
RegDate:        1993-12-03
Updated:        2019-11-13
OrgAdminHandle: NETWO8351-ARIN
OrgTechHandle:  NETWO8351-ARIN
OrgAbuseHandle: NETWO8351-ARIN
OrgNOCHandle:   NETWO8351-ARIN
Source:         ARIN


POCHandle:      NETWO8351-ARIN
IsRole:         Y
LastName:       Network Services
FirstName:      
Street:         1221 Oak Street
City:           Oakland
State/Prov:     CA
Country:        US
PostalCode:     94612
RegDate:        2017-11-01
Updated:        2024-07-23
OfficePhone:    +1-510-383-5000
Mailbox:        geoff.nordin@acgov.org
Mailbox:        ns@acgov.org
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 166.107.0.0/16

No nearby ranges found.

Hosted domains

There are 35 domain names hosted across 5 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
166.107.72.47	acgov.org	26
166.107.72.22	calassessorsit-jpa.com	5
166.107.72.144	map1193.org	2
166.107.72.101	alamedasocialservices.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

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

IP Address	ASN	Details
166.107.72.205	AS12054 Alameda County	`2.89ms` 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
199.188.85.149	AS22646 Hargray Communications Group, Inc.	`9.84ms` from Atlanta, US
216.99.124.197	AS33749 Focus Broadband	`8.84ms` from Atlanta, US
168.28.200.165	AS3479 Board of Regents of the University System of Georgia	`0.85ms` from Atlanta, US
97.166.116.37	AS6167 Verizon Business	`14.56ms` from Atlanta, US
188.25.92.101	AS8708 DIGI ROMANIA S.A.	`0.75ms` from Bucharest, RO
188.6.34.133	AS5483 Magyar Telekom Plc.	`5.60ms` from Budapest, HU
118.120.50.53	AS4134 CHINANET-BACKBONE	`8.08ms` from Chengdu, CN
103.91.84.133	AS58898 Rainbow communications India Pvt Ltd	`0.58ms` from Chennai, IN
174.101.93.133	AS10796 Charter Communications Inc	`9.22ms` from Columbus, US
98.181.115.37	AS22773 Cox Communications Inc.	`10.15ms` from Dallas, US
52.209.103.37	AS16509 Amazon.com, Inc.	`0.22ms` from Dublin, IE
146.70.107.213	AS9009 M247 Europe SRL	`0.09ms` from Frankfurt am Main, DE
119.29.114.229	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.97ms` from Guangzhou, CN
49.77.73.117	AS4134 CHINANET-BACKBONE	`3.07ms` from Huai'an, CN
205.254.247.5	AS4927 Aseva LLC	`0.24ms` from Los Angeles, US
60.240.183.213	AS7545 TPG Telecom Limited	`9.78ms` from Melbourne, AU
109.254.62.101	AS20590 Donbass Electronic Communications Ltd.	`15.06ms` from Moscow, RU
213.85.43.85	AS8615 "Central Telegraph" Public Joint-stock Company	`1.92ms` from Moscow, RU
111.96.63.101	AS2516 KDDI CORPORATION	`8.46ms` from Osaka, JP
152.117.172.85	AS2527 Sony Network Communications Inc.	`7.25ms` from Osaka, JP
186.4.212.69	AS27947 Telconet S.A	`0.83ms` from Quito, EC
187.102.174.53	AS17222 MUNDIVOX DO BRASIL LTDA	`0.50ms` from Rio de Janeiro, BR
178.64.234.5	AS12389 PJSC Rostelecom	`10.49ms` from Saint Petersburg, RU
179.250.11.181	AS26615 TIM S/A	`2.71ms` from Sao Paulo, BR
42.227.152.5	AS4837 CHINA UNICOM China169 Backbone	`7.01ms` from Zhengzhou, CN

Traceroute

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

traceroute -a -n -q1 -f8 -m19 166.107.79.136

traceroute to 166.107.79.136 (166.107.79.136): 19 hops max, 52 byte packets

8 [AS6762] 195.22.197.190 23.247 ms

9 [AS6762] 195.22.195.49 205.069 ms

10 [AS7018] 192.205.36.229 200.923 ms

11 *

12 *

13 *

14 *

15 [AS7018] 206.121.7.22 179.906 ms

16 [AS12054] 166.107.69.137 217.07 ms

17 *

18 *

19 *

Measurement taken from

IPinfo ProbeNet in Algiers, DZ

On December 28th 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.

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